부산대학교 도서관

Preziosa, Paolo; Brescia Morra, Vincenzo; Capobianco, Marco; Gasperini, Claudio; Grimaldi, Luigi M E; Marfia, Girolama A; Paolicelli, Damiano; Perini, Paola; Torri Clerici, Valentina; Filippi, Massimo

J Neurol

Napolitano, Maddalena ; Marfia, Girolama A ; Vacca, Alessandra ; Centonze, Diego ; Bellavia, Diana ; Di Marcotullio, Lucia ; Frati, Luigi ; Bernardi, Giorgio ; Gulino, Alberto ; Calabresi, Paolo

In Molecular Brain Research 1999 72(1):89-96

Doets, Alex Y; Lingsma, Hester F; Walgaard, Christa; Islam, Badrul; Papri, Nowshin; Davidson, Amy; Yamagishi, Yuko; Kusunoki, Susumu; Dimachkie, Mazen M; Waheed, Waqar; Kolb, Noah; Islam, Zhahirul; Mohammad, Quazi Deen; Harbo, Thomas; Sindrup, Soren H; Chavada, Govindsinh; Willison, Hugh J; Casasnovas, Carlos; Bateman, Kathleen; Miller, James Al; van den Berg, Bianca; Verboon, Christine; Roodbol, Joyce; Leonhard, Sonja E; Benedetti, Luana; Kuwabara, Satoshi; Van den Bergh, Peter; Monges, Soledad; Marfia, Girolama A; Shahrizaila, Nortina; Galassi, Giuliana; Péréon, Yann; Bürmann, Jan; Kuitwaard, Krista; Kleyweg, Ruud P; Marchesoni, Cintia; Sedano Tous, María J; Querol, Luis; Illa, Isabel; Wang, Yuzhong; Nobile-Orazio, Eduardo; Rinaldi, Simon; Schenone, Angelo; Pardo, Julio; Vermeij, Frederique H; Lehmann, Helmar C; Granit, Volkan; Cavaletti, Guido; Gutiérrez-Gutiérrez, Gerardo; Faber, Catharina G

Neurology. 103

Doets, Alex Y; Lingsma, Hester F; Walgaard, Christa; Islam, Badrul; Papri, Nowshin; Davidson, Amy; Yamagishi, Yuko; Kusunoki, Susumu; Dimachkie, Mazen M; Waheed, Waqar; Kolb, Noah; Islam, Zhahirul; Mohammad, Quazi Deen; Harbo, Thomas; Sindrup, Soren H; Chavada, Govindsinh; Willison, Hugh J; Casasnovas, Carlos; Bateman, Kathleen; Miller, James AL; van den Berg, Bianca; Verboon, Christine; Roodbol, Joyce; Leonhard, Sonja E; Benedetti, Luana; Kuwabara, Satoshi; Van den Bergh, Peter; Monges, Soledad; Marfia, Girolama A; Shahrizaila, Nortina; Galassi, Giuliana; Péréon, Yann; Bürmann, Jan; Kuitwaard, Krista; Kleyweg, Ruud P; Marchesoni, Cintia; Sedano Tous, María J; Querol, Luis; Illa, Isabel; Wang, Yuzhong; Nobile-Orazio, Eduardo; Rinaldi, Simon; Schenone, Angelo; Pardo, Julio; Vermeij, Frederique H; Lehmann, Helmar C; Granit, Volkan; Cavaletti, Guido; Gutiérrez-Gutiérrez, Gerardo; Barroso, Fabio A; Visser, Leo H; Katzberg, Hans D; Dardiotis, Efthimios; Attarian, Shahram; van der Kooi, Anneke J; Eftimov, Filip; Wirtz, Paul W; Samijn, Johnny PA; Gilhuis, H Jacobus; Hadden, Robert DM; Holt, James KL; Sheikh, Kazim A; Karafiath, Summer; Vytopil, Michal; Antonini, Giovanni; Feasby, Thomas E; Faber, Catharina G; Gijsbers, Cees J; Busby, Mark; Roberts, Rhys C; Silvestri, Nicholas J; Fazio, Raffaella; van Dijk, Gert W; Garssen, Marcel PJ; Straathof, Chiara SM; Gorson, Kenneth C; Jacobs, Bart C

Neurology. Dec 22, 2021

Quattrocchi, Carlo C; Parillo, Marco; Spani, Federica; Landi, Doriana; Cola, Gaia; Dianzani, Caterina; Perrella, Eleonora; Marfia, Girolama A; Mallio, Carlo A

Investigative Radiology. 58:223-230

Nicoletti, Carolina G; Monteleone, Fabrizia; Marfia, Girolama A; Usiello, Alessandro; Buttari, Fabio; Centonze, Diego; Mori, Francesco

Multiple Sclerosis Journal. Mar2020, Vol. 26 Issue 3, p304-311. 8p. 2 Charts, 4 Graphs.

Paolicelli D; Department of Translational Biomedicines and Neurosciences, University of Bari Aldo Moro, Bari, Italy.; Borriello G; Multiple Sclerosis Center, San Pietro Fatebenefratelli Hospital, Rome, Italy.; Department of Public Health, Federico II University, Naples, Italy.; Clerici R; Operative Unit of Neurology, Valduce Hospital, Como, Italy.; Colombo E; Multiple Sclerosis Centre, IRCCS Mondino Foundation, Pavia, Italy.; Croce D; Centre for Health Economics, Social and Health Care Management, University Carlo Castanea - LIUC, Castellanza, Italy.; D'Amico E; Department of Medical and Surgical Sciences, University of Foggia, Foggia, Italy.; De Rossi N; Multiple Sclerosis Center, ASST Spedali Civili di Brescia - P.O. Montichiari, Montichiari, Italy.; Di Sapio A; Department of Neurology and CRESM (Regional Referral Multiple Sclerosis Centre), University Hospital San Luigi Gonzaga, Orbassano, Italy.; Fenu G; Department of Neurology, Brotzu Hospital, Cagliari, Italy.; Maimone D; Centro Sclerosi Multipla, UOC Neurologia, Azienda Ospedaliera per l'Emergenza Cannizzaro, Catania, Italy.; Marfia GA; Multiple Sclerosis Clinical and Research Unit, Department of Systems Medicine, Tor Vergata University, Rome, Italy.; Moccia M; Multiple Sclerosis Unit, Policlinico Federico II University Hospital of Naples, Naples, Italy.; Department of Molecular Medicine and Medical Biotechnology, Federico II University of Naples, Naples, Italy.; Perini P; Department of Neurology, Multiple Sclerosis Center, University of Padua, Padua, Italy.; Piscaglia MG; Multiple Sclerosis Center, Santa Maria delle Croci Hospital, Ravenna, Italy.; Razzolini L; Department of Neurofarba, University of Florence, Florence, Italy.; Riccaboni M; IMT School for Advanced Studies, Lucca, Italy.; Signoriello E; Second Division of Neurology, Department of Advanced Medical and Surgical Sciences, University of Campania 'Luigi Vanvitelli', Naples, Italy.; Agostoni G; Sanofi S.r.l., Milan, Italy.; Farina A; Sanofi S.r.l., Milan, Italy.; Mondino M; Sanofi S.r.l., Milan, Italy.; Berruto F; IQVIA Solutions Italy S.r.l., Milan, Italy.; Tettamanti A; IQVIA Solutions Italy S.r.l., Milan, Italy.; Donnaloja F; IQVIA Solutions Italy S.r.l., Milan, Italy. francesca.donnaloja@iqvia.com.; Tortorella C; Department of Neurosciences, Multiple Sclerosis Center, San Camillo-Forlanini Hospital, Rome, Italy.

Publisher: Springer Country of Publication: New Zealand NLM ID: 101637818 Publication Model: Print-Electronic Cited Medium: Print ISSN: 2193-8253 (Print) Linking ISSN: 21936536 NLM ISO Abbreviation: Neurol Ther Subsets: PubMed not MEDLINE

Ruggieri, Serena; Ianniello, Antonio; Copetti, Massimiliano; Altieri, Marta; Centonze, Diego; Cortese, Antonio; De Giglio, Laura; Fantozzi, Roberta; Tortorella, Carla; Gasperini, Claudio; Grimaldi, Luigi Me; Landi, Doriana; Marfia, Girolama A; Mirabella, Massimiliano; Nistri, Riccardo; Nociti, Viviana; Oddo, Oscar; Romano, Silvia; Salemi, Giuseppe; Salvetti, Marco; Pozzilli, Carlo; Petracca, Maria

Neurotherapeutics

Garaci, Francesco; Toschi, Nicola; Lanzafame, Simona; Marfia, Girolama A; Marziali, Simone; Meschini, Alessandro; Di Giuliano, Francesca; Simonetti, Giovanni; Guerrisi, Maria; Massa, Roberto; Floris, Roberto

Neuroradiology Journal; Apr2015, Vol. 28 Issue 2, p126-132, 7p

Al-Hakem H; From the Department of Neurology (H.A.-H., H.A., T.H.), Aarhus University Hospital, Denmark; Department of Neurology (A.Y.D., B.v.d.B., C.V., J.R., S.E.L., S. Arends, L.W.G.L., K.K., B.C.J.), Erasmus MC, University Medical Centre Rotterdam, the Netherlands; Department of Neurology (A.M.S.), University of Michigan School of Medicine, Ann Arbor; Department of Neurology (S.A.Z.), University of Pittsburgh Medical Center, PA; Department of Neurology (H.J.W., A.D.), College of Medical, Veterinary and Life Sciences, University of Glasgow, United Kingdom; Department of Neurology (D.R.C.), Johns Hopkins University School of Medicine, Baltimore, MD; Department of Neurology (K.C.G.), St. Elizabeth's Medical Centre, Tufts University, School of Medicine, Boston, MA; Laboratory of Gut-Brain Signaling (Z.I.); Laboratory Sciences and Services Division (LSSD) (Z.I.), icddr,b; National Institute of Neurosciences and Hospital (Q.D.M.), Dhaka, Bangladesh; Department of Neurology (S.H.S.), Odense University Hospital and University of Southern Denmark; Department of Neurology (S. Kusunoki), Kindai University Faculty of Medicine, Osaka-Sayama City, Japan; Department of Neurology (C.C.), Neuromuscular Unit, Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Division of Neurology (K.B.), Department of Medicine, Groote Schuur Hospital, University of Cape Town, South Africa; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, United Kingdom; Department of Neurology (B.v.d.B., H.K.), Franciscus Gasthuis & Vlietland (location: Vlietland Hospital), Schiedam; Department of Neurology (S. Arends, P.W.W.), Haga Hospital, Den Haag; Department of Neurology (L.W.G.L., L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (S. Kuwabara), Chiba University, Chuo-ku, Japan; Department of Neurology (P.V.d.B.), Neuromuscular Reference Centre, University Hospital Saint-Luc, University of Louvain, Brussels, Belgium; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Dysimmune Neuropathies Unit (G.A.M.), Department of Systems Medicine, Tor Vergata University Hospital, Rome, Italy; Department of Medicine (N.S.), University of Malaya, Kuala Lumpur, Malaysia; Department of Neurology (G.G.), University Hospital of Modena, Italy; Department of Clinical Neurophysiology (Y.P.), Reference Centre for NMD, CHU Nantes, Nantes, France; Department of Neurology (J.B.), Saarland University Medical School, Homburg (previous hospital), and MVZ Pfalzklinikum (J.B.), Kusel, Germany (current hospital); Department of Neurology (K.K., R.P.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (C.M.), Hospital Británico, Buenos Aires, Argentina; Department of Neurology (M.J.S.T.), Hospital Marques de Valdecilla, Santander; Department of Neurology (L.Q., L.M.-A.), Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, CIBERER and ERN-NMD, Spain; Department of Neurology (Y.W.), Affiliated Hospital of Jining Medical University, Shandong Province, China; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Research Hospital, Milan University, Italy; Nuffield Department of Clinical Neurosciences (S.R.), University of Oxford and Oxford University Hospitals NHS Foundation Trust, United Kingdom; Department of Neurosciences, Ophthalmology, Rehabilitation, Genetics and Maternal Sciences (A.S.), University of Genova, and IRCCS San Martino Hospital (A.S.), Genova, Italy; Department of Neurology (J.P.), Hospital Clínico de Santiago, Travesia Choupana, Santiago de Compostela (A Coruña), Spain; Department of Neurology (F.H.V.), Franciscus Gasthuis & Vlietland (location: Franciscus Gasthuis), Rotterdam, the Netherlands; Department of Neurology (W.W., N.K.), University of Vermont Medical Centre, Burlington; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (V.G., B.S.), Montefiore Medical Center, Bronx, NY; Department of Neurology (G.C.), University Milano-Bicocca, Monza, Italy; Department of Neurology (G.G.-G.), Hospital Universitario Infanta Sofía, San Sebastián de los Reyes, Spain; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, FLENI, Buenos Aires, Argentina; Department of Neurology (H.D.K.), University Health Network, University of Toronto, Ontario, Canada; Department of Neurology (E.D.), University Hospital of Larissa, Greece; Department of Neurology (S. Attarian), Reference Centre for NMD, CHU Timone ERN NMD, Marseille, France; Department of Neurology (A.J.v.d.K., F.E.), Amsterdam University Medical Centre, University of Amsterdam, Neuroscience Institute; Department of Neurology (J.P.A.S.), Maasstad Hospital, Rotterdam; Department of Neurology (H.J.G.), Reinier de Graaf Hospital, Reinier de Graafweg, Delft, the Netherlands; Department of Neurology (R.D.M.H.), King's College Hospital, Denmark Hill, London; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, United Kingdom; Department of Neurology (K.A.S.), University of Texas Health Science Centre at Houston; Department of Biology (N.K., S. Karafiath), Utah Valley University, Orem; Department of Neurology (M.V.), Lahey Hospital and Medical Center, Tufts University School of Medicine, Burlington, MA; Department of Neurology, Mental Health and Sensory Organs (NESMOS) (G.A.), Faculty of Medicine and Psychology, University of Rome 'Sapienza,' Sant' Andrea Hospital, Italy; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Alberta, Canada; Department of Neurology (C.F.), Maastricht University Medical Centre, the Netherlands; Department of Neurology (M.B.), Leeds Teaching Hospitals; Department of Neurology (R.C.R.), Addenbrooke's Hospital, Cambridge, United Kingdom; Department of Neurology (N.J.S.), University at Buffalo Jacobs School of Medicine and Biomedical Sciences, NY; Department of Neurology (R.F.), Scientific Institute San Raffaele, Milano, Italy; Department of Neurology (G.W.v.D.), Canisius Wilhelmina Hospital, Nijmegen; Department of Neurology (M.P.J.G.), Jeroen Bosch Hospital, 's-Hertogenbosch; Department of Neurology (J.V.), Leiden University Medical Centre; and Department of Immunology (B.C.J.), Erasmus MC, University Medical Centre Rotterdam, the Netherlands.; Doets AY; From the Department of Neurology (H.A.-H., H.A., T.H.), Aarhus University Hospital, Denmark; Department of Neurology (A.Y.D., B.v.d.B., C.V., J.R., S.E.L., S. Arends, L.W.G.L., K.K., B.C.J.), Erasmus MC, University Medical Centre Rotterdam, the Netherlands; Department of Neurology (A.M.S.), University of Michigan School of Medicine, Ann Arbor; Department of Neurology (S.A.Z.), University of Pittsburgh Medical Center, PA; Department of Neurology (H.J.W., A.D.), College of Medical, Veterinary and Life Sciences, University of Glasgow, United Kingdom; Department of Neurology (D.R.C.), Johns Hopkins University School of Medicine, Baltimore, MD; Department of Neurology (K.C.G.), St. Elizabeth's Medical Centre, Tufts University, School of Medicine, Boston, MA; Laboratory of Gut-Brain Signaling (Z.I.); Laboratory Sciences and Services Division (LSSD) (Z.I.), icddr,b; National Institute of Neurosciences and Hospital (Q.D.M.), Dhaka, Bangladesh; Department of Neurology (S.H.S.), Odense University Hospital and University of Southern Denmark; Department of Neurology (S. Kusunoki), Kindai University Faculty of Medicine, Osaka-Sayama City, Japan; Department of Neurology (C.C.), Neuromuscular Unit, Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Division of Neurology (K.B.), Department of Medicine, Groote Schuur Hospital, University of Cape Town, South Africa; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, United Kingdom; Department of Neurology (B.v.d.B., H.K.), Franciscus Gasthuis & Vlietland (location: Vlietland Hospital), Schiedam; Department of Neurology (S. Arends, P.W.W.), Haga Hospital, Den Haag; Department of Neurology (L.W.G.L., L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (S. Kuwabara), Chiba University, Chuo-ku, Japan; Department of Neurology (P.V.d.B.), Neuromuscular Reference Centre, University Hospital Saint-Luc, University of Louvain, Brussels, Belgium; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Dysimmune Neuropathies Unit (G.A.M.), Department of Systems Medicine, Tor Vergata University Hospital, Rome, Italy; Department of Medicine (N.S.), University of Malaya, Kuala Lumpur, Malaysia; Department of Neurology (G.G.), University Hospital of Modena, Italy; Department of Clinical Neurophysiology (Y.P.), Reference Centre for NMD, CHU Nantes, Nantes, France; Department of Neurology (J.B.), Saarland University Medical School, Homburg (previous hospital), and MVZ Pfalzklinikum (J.B.), Kusel, Germany (current hospital); Department of Neurology (K.K., R.P.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (C.M.), Hospital Británico, Buenos Aires, Argentina; Department of Neurology (M.J.S.T.), Hospital Marques de Valdecilla, Santander; Department of Neurology (L.Q., L.M.-A.), Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, CIBERER and ERN-NMD, Spain; Department of Neurology (Y.W.), Affiliated Hospital of Jining Medical University, Shandong Province, China; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Research Hospital, Milan University, Italy; Nuffield Department of Clinical Neurosciences (S.R.), University of Oxford and Oxford University Hospitals NHS Foundation Trust, United Kingdom; Department of Neurosciences, Ophthalmology, Rehabilitation, Genetics and Maternal Sciences (A.S.), University of Genova, and IRCCS San Martino Hospital (A.S.), Genova, Italy; Department of Neurology (J.P.), Hospital Clínico de Santiago, Travesia Choupana, Santiago de Compostela (A Coruña), Spain; Department of Neurology (F.H.V.), Franciscus Gasthuis & Vlietland (location: Franciscus Gasthuis), Rotterdam, the Netherlands; Department of Neurology (W.W., N.K.), University of Vermont Medical Centre, Burlington; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (V.G., B.S.), Montefiore Medical Center, Bronx, NY; Department of Neurology (G.C.), University Milano-Bicocca, Monza, Italy; Department of Neurology (G.G.-G.), Hospital Universitario Infanta Sofía, San Sebastián de los Reyes, Spain; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, FLENI, Buenos Aires, Argentina; Department of Neurology (H.D.K.), University Health Network, University of Toronto, Ontario, Canada; Department of Neurology (E.D.), University Hospital of Larissa, Greece; Department of Neurology (S. Attarian), Reference Centre for NMD, CHU Timone ERN NMD, Marseille, France; Department of Neurology (A.J.v.d.K., F.E.), Amsterdam University Medical Centre, University of Amsterdam, Neuroscience Institute; Department of Neurology (J.P.A.S.), Maasstad Hospital, Rotterdam; Department of Neurology (H.J.G.), Reinier de Graaf Hospital, Reinier de Graafweg, Delft, the Netherlands; Department of Neurology (R.D.M.H.), King's College Hospital, Denmark Hill, London; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, United Kingdom; Department of Neurology (K.A.S.), University of Texas Health Science Centre at Houston; Department of Biology (N.K., S. Karafiath), Utah Valley University, Orem; Department of Neurology (M.V.), Lahey Hospital and Medical Center, Tufts University School of Medicine, Burlington, MA; Department of Neurology, Mental Health and Sensory Organs (NESMOS) (G.A.), Faculty of Medicine and Psychology, University of Rome 'Sapienza,' Sant' Andrea Hospital, Italy; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Alberta, Canada; Department of Neurology (C.F.), Maastricht University Medical Centre, the Netherlands; Department of Neurology (M.B.), Leeds Teaching Hospitals; Department of Neurology (R.C.R.), Addenbrooke's Hospital, Cambridge, United Kingdom; Department of Neurology (N.J.S.), University at Buffalo Jacobs School of Medicine and Biomedical Sciences, NY; Department of Neurology (R.F.), Scientific Institute San Raffaele, Milano, Italy; Department of Neurology (G.W.v.D.), Canisius Wilhelmina Hospital, Nijmegen; Department of Neurology (M.P.J.G.), Jeroen Bosch Hospital, 's-Hertogenbosch; Department of Neurology (J.V.), Leiden University Medical Centre; and Department of Immunology (B.C.J.), Erasmus MC, University Medical Centre Rotterdam, the Netherlands.; Stino AM; From the Department of Neurology (H.A.-H., H.A., T.H.), Aarhus University Hospital, Denmark; Department of Neurology (A.Y.D., B.v.d.B., C.V., J.R., S.E.L., S. Arends, L.W.G.L., K.K., B.C.J.), Erasmus MC, University Medical Centre Rotterdam, the Netherlands; Department of Neurology (A.M.S.), University of Michigan School of Medicine, Ann Arbor; Department of Neurology (S.A.Z.), University of Pittsburgh Medical Center, PA; Department of Neurology (H.J.W., A.D.), College of Medical, Veterinary and Life Sciences, University of Glasgow, United Kingdom; Department of Neurology (D.R.C.), Johns Hopkins University School of Medicine, Baltimore, MD; Department of Neurology (K.C.G.), St. Elizabeth's Medical Centre, Tufts University, School of Medicine, Boston, MA; Laboratory of Gut-Brain Signaling (Z.I.); Laboratory Sciences and Services Division (LSSD) (Z.I.), icddr,b; National Institute of Neurosciences and Hospital (Q.D.M.), Dhaka, Bangladesh; Department of Neurology (S.H.S.), Odense University Hospital and University of Southern Denmark; Department of Neurology (S. Kusunoki), Kindai University Faculty of Medicine, Osaka-Sayama City, Japan; Department of Neurology (C.C.), Neuromuscular Unit, Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Division of Neurology (K.B.), Department of Medicine, Groote Schuur Hospital, University of Cape Town, South Africa; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, United Kingdom; Department of Neurology (B.v.d.B., H.K.), Franciscus Gasthuis & Vlietland (location: Vlietland Hospital), Schiedam; Department of Neurology (S. Arends, P.W.W.), Haga Hospital, Den Haag; Department of Neurology (L.W.G.L., L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (S. Kuwabara), Chiba University, Chuo-ku, Japan; Department of Neurology (P.V.d.B.), Neuromuscular Reference Centre, University Hospital Saint-Luc, University of Louvain, Brussels, Belgium; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Dysimmune Neuropathies Unit (G.A.M.), Department of Systems Medicine, Tor Vergata University Hospital, Rome, Italy; Department of Medicine (N.S.), University of Malaya, Kuala Lumpur, Malaysia; Department of Neurology (G.G.), University Hospital of Modena, Italy; Department of Clinical Neurophysiology (Y.P.), Reference Centre for NMD, CHU Nantes, Nantes, France; Department of Neurology (J.B.), Saarland University Medical School, Homburg (previous hospital), and MVZ Pfalzklinikum (J.B.), Kusel, Germany (current hospital); Department of Neurology (K.K., R.P.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (C.M.), Hospital Británico, Buenos Aires, Argentina; Department of Neurology (M.J.S.T.), Hospital Marques de Valdecilla, Santander; Department of Neurology (L.Q., L.M.-A.), Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, CIBERER and ERN-NMD, Spain; Department of Neurology (Y.W.), Affiliated Hospital of Jining Medical University, Shandong Province, China; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Research Hospital, Milan University, Italy; Nuffield Department of Clinical Neurosciences (S.R.), University of Oxford and Oxford University Hospitals NHS Foundation Trust, United Kingdom; Department of Neurosciences, Ophthalmology, Rehabilitation, Genetics and Maternal Sciences (A.S.), University of Genova, and IRCCS San Martino Hospital (A.S.), Genova, Italy; Department of Neurology (J.P.), Hospital Clínico de Santiago, Travesia Choupana, Santiago de Compostela (A Coruña), Spain; Department of Neurology (F.H.V.), Franciscus Gasthuis & Vlietland (location: Franciscus Gasthuis), Rotterdam, the Netherlands; Department of Neurology (W.W., N.K.), University of Vermont Medical Centre, Burlington; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (V.G., B.S.), Montefiore Medical Center, Bronx, NY; Department of Neurology (G.C.), University Milano-Bicocca, Monza, Italy; Department of Neurology (G.G.-G.), Hospital Universitario Infanta Sofía, San Sebastián de los Reyes, Spain; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, FLENI, Buenos Aires, Argentina; Department of Neurology (H.D.K.), University Health Network, University of Toronto, Ontario, Canada; Department of Neurology (E.D.), University Hospital of Larissa, Greece; Department of Neurology (S. Attarian), Reference Centre for NMD, CHU Timone ERN NMD, Marseille, France; Department of Neurology (A.J.v.d.K., F.E.), Amsterdam University Medical Centre, University of Amsterdam, Neuroscience Institute; Department of Neurology (J.P.A.S.), Maasstad Hospital, Rotterdam; Department of Neurology (H.J.G.), Reinier de Graaf Hospital, Reinier de Graafweg, Delft, the Netherlands; Department of Neurology (R.D.M.H.), King's College Hospital, Denmark Hill, London; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, United Kingdom; Department of Neurology (K.A.S.), University of Texas Health Science Centre at Houston; Department of Biology (N.K., S. Karafiath), Utah Valley University, Orem; Department of Neurology (M.V.), Lahey Hospital and Medical Center, Tufts University School of Medicine, Burlington, MA; Department of Neurology, Mental Health and Sensory Organs (NESMOS) (G.A.), Faculty of Medicine and Psychology, University of Rome 'Sapienza,' Sant' Andrea Hospital, Italy; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Alberta, Canada; Department of Neurology (C.F.), Maastricht University Medical Centre, the Netherlands; Department of Neurology (M.B.), Leeds Teaching Hospitals; Department of Neurology (R.C.R.), Addenbrooke's Hospital, Cambridge, United Kingdom; Department of Neurology (N.J.S.), University at Buffalo Jacobs School of Medicine and Biomedical Sciences, NY; Department of Neurology (R.F.), Scientific Institute San Raffaele, Milano, Italy; Department of Neurology (G.W.v.D.), Canisius Wilhelmina Hospital, Nijmegen; Department of Neurology (M.P.J.G.), Jeroen Bosch Hospital, 's-Hertogenbosch; Department of Neurology (J.V.), Leiden University Medical Centre; and Department of Immunology (B.C.J.), Erasmus MC, University Medical Centre Rotterdam, the Netherlands.; Zivkovic SA; From the Department of Neurology (H.A.-H., H.A., T.H.), Aarhus University Hospital, Denmark; Department of Neurology (A.Y.D., B.v.d.B., C.V., J.R., S.E.L., S. Arends, L.W.G.L., K.K., B.C.J.), Erasmus MC, University Medical Centre Rotterdam, the Netherlands; Department of Neurology (A.M.S.), University of Michigan School of Medicine, Ann Arbor; Department of Neurology (S.A.Z.), University of Pittsburgh Medical Center, PA; Department of Neurology (H.J.W., A.D.), College of Medical, Veterinary and Life Sciences, University of Glasgow, United Kingdom; Department of Neurology (D.R.C.), Johns Hopkins University School of Medicine, Baltimore, MD; Department of Neurology (K.C.G.), St. Elizabeth's Medical Centre, Tufts University, School of Medicine, Boston, MA; Laboratory of Gut-Brain Signaling (Z.I.); Laboratory Sciences and Services Division (LSSD) (Z.I.), icddr,b; National Institute of Neurosciences and Hospital (Q.D.M.), Dhaka, Bangladesh; Department of Neurology (S.H.S.), Odense University Hospital and University of Southern Denmark; Department of Neurology (S. Kusunoki), Kindai University Faculty of Medicine, Osaka-Sayama City, Japan; Department of Neurology (C.C.), Neuromuscular Unit, Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Division of Neurology (K.B.), Department of Medicine, Groote Schuur Hospital, University of Cape Town, South Africa; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, United Kingdom; Department of Neurology (B.v.d.B., H.K.), Franciscus Gasthuis & Vlietland (location: Vlietland Hospital), Schiedam; Department of Neurology (S. Arends, P.W.W.), Haga Hospital, Den Haag; Department of Neurology (L.W.G.L., L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (S. Kuwabara), Chiba University, Chuo-ku, Japan; Department of Neurology (P.V.d.B.), Neuromuscular Reference Centre, University Hospital Saint-Luc, University of Louvain, Brussels, Belgium; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Dysimmune Neuropathies Unit (G.A.M.), Department of Systems Medicine, Tor Vergata University Hospital, Rome, Italy; Department of Medicine (N.S.), University of Malaya, Kuala Lumpur, Malaysia; Department of Neurology (G.G.), University Hospital of Modena, Italy; Department of Clinical Neurophysiology (Y.P.), Reference Centre for NMD, CHU Nantes, Nantes, France; Department of Neurology (J.B.), Saarland University Medical School, Homburg (previous hospital), and MVZ Pfalzklinikum (J.B.), Kusel, Germany (current hospital); Department of Neurology (K.K., R.P.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (C.M.), Hospital Británico, Buenos Aires, Argentina; Department of Neurology (M.J.S.T.), Hospital Marques de Valdecilla, Santander; Department of Neurology (L.Q., L.M.-A.), Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, CIBERER and ERN-NMD, Spain; Department of Neurology (Y.W.), Affiliated Hospital of Jining Medical University, Shandong Province, China; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Research Hospital, Milan University, Italy; Nuffield Department of Clinical Neurosciences (S.R.), University of Oxford and Oxford University Hospitals NHS Foundation Trust, United Kingdom; Department of Neurosciences, Ophthalmology, Rehabilitation, Genetics and Maternal Sciences (A.S.), University of Genova, and IRCCS San Martino Hospital (A.S.), Genova, Italy; Department of Neurology (J.P.), Hospital Clínico de Santiago, Travesia Choupana, Santiago de Compostela (A Coruña), Spain; Department of Neurology (F.H.V.), Franciscus Gasthuis & Vlietland (location: Franciscus Gasthuis), Rotterdam, the Netherlands; Department of Neurology (W.W., N.K.), University of Vermont Medical Centre, Burlington; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (V.G., B.S.), Montefiore Medical Center, Bronx, NY; Department of Neurology (G.C.), University Milano-Bicocca, Monza, Italy; Department of Neurology (G.G.-G.), Hospital Universitario Infanta Sofía, San Sebastián de los Reyes, Spain; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, FLENI, Buenos Aires, Argentina; Department of Neurology (H.D.K.), University Health Network, University of Toronto, Ontario, Canada; Department of Neurology (E.D.), University Hospital of Larissa, Greece; Department of Neurology (S. Attarian), Reference Centre for NMD, CHU Timone ERN NMD, Marseille, France; Department of Neurology (A.J.v.d.K., F.E.), Amsterdam University Medical Centre, University of Amsterdam, Neuroscience Institute; Department of Neurology (J.P.A.S.), Maasstad Hospital, Rotterdam; Department of Neurology (H.J.G.), Reinier de Graaf Hospital, Reinier de Graafweg, Delft, the Netherlands; Department of Neurology (R.D.M.H.), King's College Hospital, Denmark Hill, London; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, United Kingdom; Department of Neurology (K.A.S.), University of Texas Health Science Centre at Houston; Department of Biology (N.K., S. Karafiath), Utah Valley University, Orem; Department of Neurology (M.V.), Lahey Hospital and Medical Center, Tufts University School of Medicine, Burlington, MA; Department of Neurology, Mental Health and Sensory Organs (NESMOS) (G.A.), Faculty of Medicine and Psychology, University of Rome 'Sapienza,' Sant' Andrea Hospital, Italy; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Alberta, Canada; Department of Neurology (C.F.), Maastricht University Medical Centre, the Netherlands; Department of Neurology (M.B.), Leeds Teaching Hospitals; Department of Neurology (R.C.R.), Addenbrooke's Hospital, Cambridge, United Kingdom; Department of Neurology (N.J.S.), University at Buffalo Jacobs School of Medicine and Biomedical Sciences, NY; Department of Neurology (R.F.), Scientific Institute San Raffaele, Milano, Italy; Department of Neurology (G.W.v.D.), Canisius Wilhelmina Hospital, Nijmegen; Department of Neurology (M.P.J.G.), Jeroen Bosch Hospital, 's-Hertogenbosch; Department of Neurology (J.V.), Leiden University Medical Centre; and Department of Immunology (B.C.J.), Erasmus MC, University Medical Centre Rotterdam, the Netherlands.; Andersen H; From the Department of Neurology (H.A.-H., H.A., T.H.), Aarhus University Hospital, Denmark; Department of Neurology (A.Y.D., B.v.d.B., C.V., J.R., S.E.L., S. Arends, L.W.G.L., K.K., B.C.J.), Erasmus MC, University Medical Centre Rotterdam, the Netherlands; Department of Neurology (A.M.S.), University of Michigan School of Medicine, Ann Arbor; Department of Neurology (S.A.Z.), University of Pittsburgh Medical Center, PA; Department of Neurology (H.J.W., A.D.), College of Medical, Veterinary and Life Sciences, University of Glasgow, United Kingdom; Department of Neurology (D.R.C.), Johns Hopkins University School of Medicine, Baltimore, MD; Department of Neurology (K.C.G.), St. Elizabeth's Medical Centre, Tufts University, School of Medicine, Boston, MA; Laboratory of Gut-Brain Signaling (Z.I.); Laboratory Sciences and Services Division (LSSD) (Z.I.), icddr,b; National Institute of Neurosciences and Hospital (Q.D.M.), Dhaka, Bangladesh; Department of Neurology (S.H.S.), Odense University Hospital and University of Southern Denmark; Department of Neurology (S. Kusunoki), Kindai University Faculty of Medicine, Osaka-Sayama City, Japan; Department of Neurology (C.C.), Neuromuscular Unit, Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Division of Neurology (K.B.), Department of Medicine, Groote Schuur Hospital, University of Cape Town, South Africa; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, United Kingdom; Department of Neurology (B.v.d.B., H.K.), Franciscus Gasthuis & Vlietland (location: Vlietland Hospital), Schiedam; Department of Neurology (S. Arends, P.W.W.), Haga Hospital, Den Haag; Department of Neurology (L.W.G.L., L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (S. Kuwabara), Chiba University, Chuo-ku, Japan; Department of Neurology (P.V.d.B.), Neuromuscular Reference Centre, University Hospital Saint-Luc, University of Louvain, Brussels, Belgium; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Dysimmune Neuropathies Unit (G.A.M.), Department of Systems Medicine, Tor Vergata University Hospital, Rome, Italy; Department of Medicine (N.S.), University of Malaya, Kuala Lumpur, Malaysia; Department of Neurology (G.G.), University Hospital of Modena, Italy; Department of Clinical Neurophysiology (Y.P.), Reference Centre for NMD, CHU Nantes, Nantes, France; Department of Neurology (J.B.), Saarland University Medical School, Homburg (previous hospital), and MVZ Pfalzklinikum (J.B.), Kusel, Germany (current hospital); Department of Neurology (K.K., R.P.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (C.M.), Hospital Británico, Buenos Aires, Argentina; Department of Neurology (M.J.S.T.), Hospital Marques de Valdecilla, Santander; Department of Neurology (L.Q., L.M.-A.), Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, CIBERER and ERN-NMD, Spain; Department of Neurology (Y.W.), Affiliated Hospital of Jining Medical University, Shandong Province, China; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Research Hospital, Milan University, Italy; Nuffield Department of Clinical Neurosciences (S.R.), University of Oxford and Oxford University Hospitals NHS Foundation Trust, United Kingdom; Department of Neurosciences, Ophthalmology, Rehabilitation, Genetics and Maternal Sciences (A.S.), University of Genova, and IRCCS San Martino Hospital (A.S.), Genova, Italy; Department of Neurology (J.P.), Hospital Clínico de Santiago, Travesia Choupana, Santiago de Compostela (A Coruña), Spain; Department of Neurology (F.H.V.), Franciscus Gasthuis & Vlietland (location: Franciscus Gasthuis), Rotterdam, the Netherlands; Department of Neurology (W.W., N.K.), University of Vermont Medical Centre, Burlington; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (V.G., B.S.), Montefiore Medical Center, Bronx, NY; Department of Neurology (G.C.), University Milano-Bicocca, Monza, Italy; Department of Neurology (G.G.-G.), Hospital Universitario Infanta Sofía, San Sebastián de los Reyes, Spain; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, FLENI, Buenos Aires, Argentina; Department of Neurology (H.D.K.), University Health Network, University of Toronto, Ontario, Canada; Department of Neurology (E.D.), University Hospital of Larissa, Greece; Department of Neurology (S. Attarian), Reference Centre for NMD, CHU Timone ERN NMD, Marseille, France; Department of Neurology (A.J.v.d.K., F.E.), Amsterdam University Medical Centre, University of Amsterdam, Neuroscience Institute; Department of Neurology (J.P.A.S.), Maasstad Hospital, Rotterdam; Department of Neurology (H.J.G.), Reinier de Graaf Hospital, Reinier de Graafweg, Delft, the Netherlands; Department of Neurology (R.D.M.H.), King's College Hospital, Denmark Hill, London; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, United Kingdom; Department of Neurology (K.A.S.), University of Texas Health Science Centre at Houston; Department of Biology (N.K., S. Karafiath), Utah Valley University, Orem; Department of Neurology (M.V.), Lahey Hospital and Medical Center, Tufts University School of Medicine, Burlington, MA; Department of Neurology, Mental Health and Sensory Organs (NESMOS) (G.A.), Faculty of Medicine and Psychology, University of Rome 'Sapienza,' Sant' Andrea Hospital, Italy; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Alberta, Canada; Department of Neurology (C.F.), Maastricht University Medical Centre, the Netherlands; Department of Neurology (M.B.), Leeds Teaching Hospitals; Department of Neurology (R.C.R.), Addenbrooke's Hospital, Cambridge, United Kingdom; Department of Neurology (N.J.S.), University at Buffalo Jacobs School of Medicine and Biomedical Sciences, NY; Department of Neurology (R.F.), Scientific Institute San Raffaele, Milano, Italy; Department of Neurology (G.W.v.D.), Canisius Wilhelmina Hospital, Nijmegen; Department of Neurology (M.P.J.G.), Jeroen Bosch Hospital, 's-Hertogenbosch; Department of Neurology (J.V.), Leiden University Medical Centre; and Department of Immunology (B.C.J.), Erasmus MC, University Medical Centre Rotterdam, the Netherlands.; Willison HJ; From the Department of Neurology (H.A.-H., H.A., T.H.), Aarhus University Hospital, Denmark; Department of Neurology (A.Y.D., B.v.d.B., C.V., J.R., S.E.L., S. Arends, L.W.G.L., K.K., B.C.J.), Erasmus MC, University Medical Centre Rotterdam, the Netherlands; Department of Neurology (A.M.S.), University of Michigan School of Medicine, Ann Arbor; Department of Neurology (S.A.Z.), University of Pittsburgh Medical Center, PA; Department of Neurology (H.J.W., A.D.), College of Medical, Veterinary and Life Sciences, University of Glasgow, United Kingdom; Department of Neurology (D.R.C.), Johns Hopkins University School of Medicine, Baltimore, MD; Department of Neurology (K.C.G.), St. Elizabeth's Medical Centre, Tufts University, School of Medicine, Boston, MA; Laboratory of Gut-Brain Signaling (Z.I.); Laboratory Sciences and Services Division (LSSD) (Z.I.), icddr,b; National Institute of Neurosciences and Hospital (Q.D.M.), Dhaka, Bangladesh; Department of Neurology (S.H.S.), Odense University Hospital and University of Southern Denmark; Department of Neurology (S. Kusunoki), Kindai University Faculty of Medicine, Osaka-Sayama City, Japan; Department of Neurology (C.C.), Neuromuscular Unit, Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Division of Neurology (K.B.), Department of Medicine, Groote Schuur Hospital, University of Cape Town, South Africa; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, United Kingdom; Department of Neurology (B.v.d.B., H.K.), Franciscus Gasthuis & Vlietland (location: Vlietland Hospital), Schiedam; Department of Neurology (S. Arends, P.W.W.), Haga Hospital, Den Haag; Department of Neurology (L.W.G.L., L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (S. Kuwabara), Chiba University, Chuo-ku, Japan; Department of Neurology (P.V.d.B.), Neuromuscular Reference Centre, University Hospital Saint-Luc, University of Louvain, Brussels, Belgium; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Dysimmune Neuropathies Unit (G.A.M.), Department of Systems Medicine, Tor Vergata University Hospital, Rome, Italy; Department of Medicine (N.S.), University of Malaya, Kuala Lumpur, Malaysia; Department of Neurology (G.G.), University Hospital of Modena, Italy; Department of Clinical Neurophysiology (Y.P.), Reference Centre for NMD, CHU Nantes, Nantes, France; Department of Neurology (J.B.), Saarland University Medical School, Homburg (previous hospital), and MVZ Pfalzklinikum (J.B.), Kusel, Germany (current hospital); Department of Neurology (K.K., R.P.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (C.M.), Hospital Británico, Buenos Aires, Argentina; Department of Neurology (M.J.S.T.), Hospital Marques de Valdecilla, Santander; Department of Neurology (L.Q., L.M.-A.), Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, CIBERER and ERN-NMD, Spain; Department of Neurology (Y.W.), Affiliated Hospital of Jining Medical University, Shandong Province, China; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Research Hospital, Milan University, Italy; Nuffield Department of Clinical Neurosciences (S.R.), University of Oxford and Oxford University Hospitals NHS Foundation Trust, United Kingdom; Department of Neurosciences, Ophthalmology, Rehabilitation, Genetics and Maternal Sciences (A.S.), University of Genova, and IRCCS San Martino Hospital (A.S.), Genova, Italy; Department of Neurology (J.P.), Hospital Clínico de Santiago, Travesia Choupana, Santiago de Compostela (A Coruña), Spain; Department of Neurology (F.H.V.), Franciscus Gasthuis & Vlietland (location: Franciscus Gasthuis), Rotterdam, the Netherlands; Department of Neurology (W.W., N.K.), University of Vermont Medical Centre, Burlington; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (V.G., B.S.), Montefiore Medical Center, Bronx, NY; Department of Neurology (G.C.), University Milano-Bicocca, Monza, Italy; Department of Neurology (G.G.-G.), Hospital Universitario Infanta Sofía, San Sebastián de los Reyes, Spain; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, FLENI, Buenos Aires, Argentina; Department of Neurology (H.D.K.), University Health Network, University of Toronto, Ontario, Canada; Department of Neurology (E.D.), University Hospital of Larissa, Greece; Department of Neurology (S. Attarian), Reference Centre for NMD, CHU Timone ERN NMD, Marseille, France; Department of Neurology (A.J.v.d.K., F.E.), Amsterdam University Medical Centre, University of Amsterdam, Neuroscience Institute; Department of Neurology (J.P.A.S.), Maasstad Hospital, Rotterdam; Department of Neurology (H.J.G.), Reinier de Graaf Hospital, Reinier de Graafweg, Delft, the Netherlands; Department of Neurology (R.D.M.H.), King's College Hospital, Denmark Hill, London; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, United Kingdom; Department of Neurology (K.A.S.), University of Texas Health Science Centre at Houston; Department of Biology (N.K., S. Karafiath), Utah Valley University, Orem; Department of Neurology (M.V.), Lahey Hospital and Medical Center, Tufts University School of Medicine, Burlington, MA; Department of Neurology, Mental Health and Sensory Organs (NESMOS) (G.A.), Faculty of Medicine and Psychology, University of Rome 'Sapienza,' Sant' Andrea Hospital, Italy; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Alberta, Canada; Department of Neurology (C.F.), Maastricht University Medical Centre, the Netherlands; Department of Neurology (M.B.), Leeds Teaching Hospitals; Department of Neurology (R.C.R.), Addenbrooke's Hospital, Cambridge, United Kingdom; Department of Neurology (N.J.S.), University at Buffalo Jacobs School of Medicine and Biomedical Sciences, NY; Department of Neurology (R.F.), Scientific Institute San Raffaele, Milano, Italy; Department of Neurology (G.W.v.D.), Canisius Wilhelmina Hospital, Nijmegen; Department of Neurology (M.P.J.G.), Jeroen Bosch Hospital, 's-Hertogenbosch; Department of Neurology (J.V.), Leiden University Medical Centre; and Department of Immunology (B.C.J.), Erasmus MC, University Medical Centre Rotterdam, the Netherlands.; Cornblath DR; From the Department of Neurology (H.A.-H., H.A., T.H.), Aarhus University Hospital, Denmark; Department of Neurology (A.Y.D., B.v.d.B., C.V., J.R., S.E.L., S. Arends, L.W.G.L., K.K., B.C.J.), Erasmus MC, University Medical Centre Rotterdam, the Netherlands; Department of Neurology (A.M.S.), University of Michigan School of Medicine, Ann Arbor; Department of Neurology (S.A.Z.), University of Pittsburgh Medical Center, PA; Department of Neurology (H.J.W., A.D.), College of Medical, Veterinary and Life Sciences, University of Glasgow, United Kingdom; Department of Neurology (D.R.C.), Johns Hopkins University School of Medicine, Baltimore, MD; Department of Neurology (K.C.G.), St. Elizabeth's Medical Centre, Tufts University, School of Medicine, Boston, MA; Laboratory of Gut-Brain Signaling (Z.I.); Laboratory Sciences and Services Division (LSSD) (Z.I.), icddr,b; National Institute of Neurosciences and Hospital (Q.D.M.), Dhaka, Bangladesh; Department of Neurology (S.H.S.), Odense University Hospital and University of Southern Denmark; Department of Neurology (S. Kusunoki), Kindai University Faculty of Medicine, Osaka-Sayama City, Japan; Department of Neurology (C.C.), Neuromuscular Unit, Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Division of Neurology (K.B.), Department of Medicine, Groote Schuur Hospital, University of Cape Town, South Africa; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, United Kingdom; Department of Neurology (B.v.d.B., H.K.), Franciscus Gasthuis & Vlietland (location: Vlietland Hospital), Schiedam; Department of Neurology (S. Arends, P.W.W.), Haga Hospital, Den Haag; Department of Neurology (L.W.G.L., L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (S. Kuwabara), Chiba University, Chuo-ku, Japan; Department of Neurology (P.V.d.B.), Neuromuscular Reference Centre, University Hospital Saint-Luc, University of Louvain, Brussels, Belgium; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Dysimmune Neuropathies Unit (G.A.M.), Department of Systems Medicine, Tor Vergata University Hospital, Rome, Italy; Department of Medicine (N.S.), University of Malaya, Kuala Lumpur, Malaysia; Department of Neurology (G.G.), University Hospital of Modena, Italy; Department of Clinical Neurophysiology (Y.P.), Reference Centre for NMD, CHU Nantes, Nantes, France; Department of Neurology (J.B.), Saarland University Medical School, Homburg (previous hospital), and MVZ Pfalzklinikum (J.B.), Kusel, Germany (current hospital); Department of Neurology (K.K., R.P.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (C.M.), Hospital Británico, Buenos Aires, Argentina; Department of Neurology (M.J.S.T.), Hospital Marques de Valdecilla, Santander; Department of Neurology (L.Q., L.M.-A.), Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, CIBERER and ERN-NMD, Spain; Department of Neurology (Y.W.), Affiliated Hospital of Jining Medical University, Shandong Province, China; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Research Hospital, Milan University, Italy; Nuffield Department of Clinical Neurosciences (S.R.), University of Oxford and Oxford University Hospitals NHS Foundation Trust, United Kingdom; Department of Neurosciences, Ophthalmology, Rehabilitation, Genetics and Maternal Sciences (A.S.), University of Genova, and IRCCS San Martino Hospital (A.S.), Genova, Italy; Department of Neurology (J.P.), Hospital Clínico de Santiago, Travesia Choupana, Santiago de Compostela (A Coruña), Spain; Department of Neurology (F.H.V.), Franciscus Gasthuis & Vlietland (location: Franciscus Gasthuis), Rotterdam, the Netherlands; Department of Neurology (W.W., N.K.), University of Vermont Medical Centre, Burlington; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (V.G., B.S.), Montefiore Medical Center, Bronx, NY; Department of Neurology (G.C.), University Milano-Bicocca, Monza, Italy; Department of Neurology (G.G.-G.), Hospital Universitario Infanta Sofía, San Sebastián de los Reyes, Spain; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, FLENI, Buenos Aires, Argentina; Department of Neurology (H.D.K.), University Health Network, University of Toronto, Ontario, Canada; Department of Neurology (E.D.), University Hospital of Larissa, Greece; Department of Neurology (S. Attarian), Reference Centre for NMD, CHU Timone ERN NMD, Marseille, France; Department of Neurology (A.J.v.d.K., F.E.), Amsterdam University Medical Centre, University of Amsterdam, Neuroscience Institute; Department of Neurology (J.P.A.S.), Maasstad Hospital, Rotterdam; Department of Neurology (H.J.G.), Reinier de Graaf Hospital, Reinier de Graafweg, Delft, the Netherlands; Department of Neurology (R.D.M.H.), King's College Hospital, Denmark Hill, London; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, United Kingdom; Department of Neurology (K.A.S.), University of Texas Health Science Centre at Houston; Department of Biology (N.K., S. Karafiath), Utah Valley University, Orem; Department of Neurology (M.V.), Lahey Hospital and Medical Center, Tufts University School of Medicine, Burlington, MA; Department of Neurology, Mental Health and Sensory Organs (NESMOS) (G.A.), Faculty of Medicine and Psychology, University of Rome 'Sapienza,' Sant' Andrea Hospital, Italy; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Alberta, Canada; Department of Neurology (C.F.), Maastricht University Medical Centre, the Netherlands; Department of Neurology (M.B.), Leeds Teaching Hospitals; Department of Neurology (R.C.R.), Addenbrooke's Hospital, Cambridge, United Kingdom; Department of Neurology (N.J.S.), University at Buffalo Jacobs School of Medicine and Biomedical Sciences, NY; Department of Neurology (R.F.), Scientific Institute San Raffaele, Milano, Italy; Department of Neurology (G.W.v.D.), Canisius Wilhelmina Hospital, Nijmegen; Department of Neurology (M.P.J.G.), Jeroen Bosch Hospital, 's-Hertogenbosch; Department of Neurology (J.V.), Leiden University Medical Centre; and Department of Immunology (B.C.J.), Erasmus MC, University Medical Centre Rotterdam, the Netherlands.; Gorson KC; From the Department of Neurology (H.A.-H., H.A., T.H.), Aarhus University Hospital, Denmark; Department of Neurology (A.Y.D., B.v.d.B., C.V., J.R., S.E.L., S. Arends, L.W.G.L., K.K., B.C.J.), Erasmus MC, University Medical Centre Rotterdam, the Netherlands; Department of Neurology (A.M.S.), University of Michigan School of Medicine, Ann Arbor; Department of Neurology (S.A.Z.), University of Pittsburgh Medical Center, PA; Department of Neurology (H.J.W., A.D.), College of Medical, Veterinary and Life Sciences, University of Glasgow, United Kingdom; Department of Neurology (D.R.C.), Johns Hopkins University School of Medicine, Baltimore, MD; Department of Neurology (K.C.G.), St. Elizabeth's Medical Centre, Tufts University, School of Medicine, Boston, MA; Laboratory of Gut-Brain Signaling (Z.I.); Laboratory Sciences and Services Division (LSSD) (Z.I.), icddr,b; National Institute of Neurosciences and Hospital (Q.D.M.), Dhaka, Bangladesh; Department of Neurology (S.H.S.), Odense University Hospital and University of Southern Denmark; Department of Neurology (S. Kusunoki), Kindai University Faculty of Medicine, Osaka-Sayama City, Japan; Department of Neurology (C.C.), Neuromuscular Unit, Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Division of Neurology (K.B.), Department of Medicine, Groote Schuur Hospital, University of Cape Town, South Africa; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, United Kingdom; Department of Neurology (B.v.d.B., H.K.), Franciscus Gasthuis & Vlietland (location: Vlietland Hospital), Schiedam; Department of Neurology (S. Arends, P.W.W.), Haga Hospital, Den Haag; Department of Neurology (L.W.G.L., L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (S. Kuwabara), Chiba University, Chuo-ku, Japan; Department of Neurology (P.V.d.B.), Neuromuscular Reference Centre, University Hospital Saint-Luc, University of Louvain, Brussels, Belgium; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Dysimmune Neuropathies Unit (G.A.M.), Department of Systems Medicine, Tor Vergata University Hospital, Rome, Italy; Department of Medicine (N.S.), University of Malaya, Kuala Lumpur, Malaysia; Department of Neurology (G.G.), University Hospital of Modena, Italy; Department of Clinical Neurophysiology (Y.P.), Reference Centre for NMD, CHU Nantes, Nantes, France; Department of Neurology (J.B.), Saarland University Medical School, Homburg (previous hospital), and MVZ Pfalzklinikum (J.B.), Kusel, Germany (current hospital); Department of Neurology (K.K., R.P.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (C.M.), Hospital Británico, Buenos Aires, Argentina; Department of Neurology (M.J.S.T.), Hospital Marques de Valdecilla, Santander; Department of Neurology (L.Q., L.M.-A.), Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, CIBERER and ERN-NMD, Spain; Department of Neurology (Y.W.), Affiliated Hospital of Jining Medical University, Shandong Province, China; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Research Hospital, Milan University, Italy; Nuffield Department of Clinical Neurosciences (S.R.), University of Oxford and Oxford University Hospitals NHS Foundation Trust, United Kingdom; Department of Neurosciences, Ophthalmology, Rehabilitation, Genetics and Maternal Sciences (A.S.), University of Genova, and IRCCS San Martino Hospital (A.S.), Genova, Italy; Department of Neurology (J.P.), Hospital Clínico de Santiago, Travesia Choupana, Santiago de Compostela (A Coruña), Spain; Department of Neurology (F.H.V.), Franciscus Gasthuis & Vlietland (location: Franciscus Gasthuis), Rotterdam, the Netherlands; Department of Neurology (W.W., N.K.), University of Vermont Medical Centre, Burlington; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (V.G., B.S.), Montefiore Medical Center, Bronx, NY; Department of Neurology (G.C.), University Milano-Bicocca, Monza, Italy; Department of Neurology (G.G.-G.), Hospital Universitario Infanta Sofía, San Sebastián de los Reyes, Spain; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, FLENI, Buenos Aires, Argentina; Department of Neurology (H.D.K.), University Health Network, University of Toronto, Ontario, Canada; Department of Neurology (E.D.), University Hospital of Larissa, Greece; Department of Neurology (S. Attarian), Reference Centre for NMD, CHU Timone ERN NMD, Marseille, France; Department of Neurology (A.J.v.d.K., F.E.), Amsterdam University Medical Centre, University of Amsterdam, Neuroscience Institute; Department of Neurology (J.P.A.S.), Maasstad Hospital, Rotterdam; Department of Neurology (H.J.G.), Reinier de Graaf Hospital, Reinier de Graafweg, Delft, the Netherlands; Department of Neurology (R.D.M.H.), King's College Hospital, Denmark Hill, London; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, United Kingdom; Department of Neurology (K.A.S.), University of Texas Health Science Centre at Houston; Department of Biology (N.K., S. Karafiath), Utah Valley University, Orem; Department of Neurology (M.V.), Lahey Hospital and Medical Center, Tufts University School of Medicine, Burlington, MA; Department of Neurology, Mental Health and Sensory Organs (NESMOS) (G.A.), Faculty of Medicine and Psychology, University of Rome 'Sapienza,' Sant' Andrea Hospital, Italy; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Alberta, Canada; Department of Neurology (C.F.), Maastricht University Medical Centre, the Netherlands; Department of Neurology (M.B.), Leeds Teaching Hospitals; Department of Neurology (R.C.R.), Addenbrooke's Hospital, Cambridge, United Kingdom; Department of Neurology (N.J.S.), University at Buffalo Jacobs School of Medicine and Biomedical Sciences, NY; Department of Neurology (R.F.), Scientific Institute San Raffaele, Milano, Italy; Department of Neurology (G.W.v.D.), Canisius Wilhelmina Hospital, Nijmegen; Department of Neurology (M.P.J.G.), Jeroen Bosch Hospital, 's-Hertogenbosch; Department of Neurology (J.V.), Leiden University Medical Centre; and Department of Immunology (B.C.J.), Erasmus MC, University Medical Centre Rotterdam, the Netherlands.; Islam Z; From the Department of Neurology (H.A.-H., H.A., T.H.), Aarhus University Hospital, Denmark; Department of Neurology (A.Y.D., B.v.d.B., C.V., J.R., S.E.L., S. Arends, L.W.G.L., K.K., B.C.J.), Erasmus MC, University Medical Centre Rotterdam, the Netherlands; Department of Neurology (A.M.S.), University of Michigan School of Medicine, Ann Arbor; Department of Neurology (S.A.Z.), University of Pittsburgh Medical Center, PA; Department of Neurology (H.J.W., A.D.), College of Medical, Veterinary and Life Sciences, University of Glasgow, United Kingdom; Department of Neurology (D.R.C.), Johns Hopkins University School of Medicine, Baltimore, MD; Department of Neurology (K.C.G.), St. Elizabeth's Medical Centre, Tufts University, School of Medicine, Boston, MA; Laboratory of Gut-Brain Signaling (Z.I.); Laboratory Sciences and Services Division (LSSD) (Z.I.), icddr,b; National Institute of Neurosciences and Hospital (Q.D.M.), Dhaka, Bangladesh; Department of Neurology (S.H.S.), Odense University Hospital and University of Southern Denmark; Department of Neurology (S. Kusunoki), Kindai University Faculty of Medicine, Osaka-Sayama City, Japan; Department of Neurology (C.C.), Neuromuscular Unit, Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Division of Neurology (K.B.), Department of Medicine, Groote Schuur Hospital, University of Cape Town, South Africa; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, United Kingdom; Department of Neurology (B.v.d.B., H.K.), Franciscus Gasthuis & Vlietland (location: Vlietland Hospital), Schiedam; Department of Neurology (S. Arends, P.W.W.), Haga Hospital, Den Haag; Department of Neurology (L.W.G.L., L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (S. Kuwabara), Chiba University, Chuo-ku, Japan; Department of Neurology (P.V.d.B.), Neuromuscular Reference Centre, University Hospital Saint-Luc, University of Louvain, Brussels, Belgium; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Dysimmune Neuropathies Unit (G.A.M.), Department of Systems Medicine, Tor Vergata University Hospital, Rome, Italy; Department of Medicine (N.S.), University of Malaya, Kuala Lumpur, Malaysia; Department of Neurology (G.G.), University Hospital of Modena, Italy; Department of Clinical Neurophysiology (Y.P.), Reference Centre for NMD, CHU Nantes, Nantes, France; Department of Neurology (J.B.), Saarland University Medical School, Homburg (previous hospital), and MVZ Pfalzklinikum (J.B.), Kusel, Germany (current hospital); Department of Neurology (K.K., R.P.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (C.M.), Hospital Británico, Buenos Aires, Argentina; Department of Neurology (M.J.S.T.), Hospital Marques de Valdecilla, Santander; Department of Neurology (L.Q., L.M.-A.), Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, CIBERER and ERN-NMD, Spain; Department of Neurology (Y.W.), Affiliated Hospital of Jining Medical University, Shandong Province, China; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Research Hospital, Milan University, Italy; Nuffield Department of Clinical Neurosciences (S.R.), University of Oxford and Oxford University Hospitals NHS Foundation Trust, United Kingdom; Department of Neurosciences, Ophthalmology, Rehabilitation, Genetics and Maternal Sciences (A.S.), University of Genova, and IRCCS San Martino Hospital (A.S.), Genova, Italy; Department of Neurology (J.P.), Hospital Clínico de Santiago, Travesia Choupana, Santiago de Compostela (A Coruña), Spain; Department of Neurology (F.H.V.), Franciscus Gasthuis & Vlietland (location: Franciscus Gasthuis), Rotterdam, the Netherlands; Department of Neurology (W.W., N.K.), University of Vermont Medical Centre, Burlington; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (V.G., B.S.), Montefiore Medical Center, Bronx, NY; Department of Neurology (G.C.), University Milano-Bicocca, Monza, Italy; Department of Neurology (G.G.-G.), Hospital Universitario Infanta Sofía, San Sebastián de los Reyes, Spain; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, FLENI, Buenos Aires, Argentina; Department of Neurology (H.D.K.), University Health Network, University of Toronto, Ontario, Canada; Department of Neurology (E.D.), University Hospital of Larissa, Greece; Department of Neurology (S. Attarian), Reference Centre for NMD, CHU Timone ERN NMD, Marseille, France; Department of Neurology (A.J.v.d.K., F.E.), Amsterdam University Medical Centre, University of Amsterdam, Neuroscience Institute; Department of Neurology (J.P.A.S.), Maasstad Hospital, Rotterdam; Department of Neurology (H.J.G.), Reinier de Graaf Hospital, Reinier de Graafweg, Delft, the Netherlands; Department of Neurology (R.D.M.H.), King's College Hospital, Denmark Hill, London; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, United Kingdom; Department of Neurology (K.A.S.), University of Texas Health Science Centre at Houston; Department of Biology (N.K., S. Karafiath), Utah Valley University, Orem; Department of Neurology (M.V.), Lahey Hospital and Medical Center, Tufts University School of Medicine, Burlington, MA; Department of Neurology, Mental Health and Sensory Organs (NESMOS) (G.A.), Faculty of Medicine and Psychology, University of Rome 'Sapienza,' Sant' Andrea Hospital, Italy; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Alberta, Canada; Department of Neurology (C.F.), Maastricht University Medical Centre, the Netherlands; Department of Neurology (M.B.), Leeds Teaching Hospitals; Department of Neurology (R.C.R.), Addenbrooke's Hospital, Cambridge, United Kingdom; Department of Neurology (N.J.S.), University at Buffalo Jacobs School of Medicine and Biomedical Sciences, NY; Department of Neurology (R.F.), Scientific Institute San Raffaele, Milano, Italy; Department of Neurology (G.W.v.D.), Canisius Wilhelmina Hospital, Nijmegen; Department of Neurology (M.P.J.G.), Jeroen Bosch Hospital, 's-Hertogenbosch; Department of Neurology (J.V.), Leiden University Medical Centre; and Department of Immunology (B.C.J.), Erasmus MC, University Medical Centre Rotterdam, the Netherlands.; Mohammad QD; From the Department of Neurology (H.A.-H., H.A., T.H.), Aarhus University Hospital, Denmark; Department of Neurology (A.Y.D., B.v.d.B., C.V., J.R., S.E.L., S. Arends, L.W.G.L., K.K., B.C.J.), Erasmus MC, University Medical Centre Rotterdam, the Netherlands; Department of Neurology (A.M.S.), University of Michigan School of Medicine, Ann Arbor; Department of Neurology (S.A.Z.), University of Pittsburgh Medical Center, PA; Department of Neurology (H.J.W., A.D.), College of Medical, Veterinary and Life Sciences, University of Glasgow, United Kingdom; Department of Neurology (D.R.C.), Johns Hopkins University School of Medicine, Baltimore, MD; Department of Neurology (K.C.G.), St. Elizabeth's Medical Centre, Tufts University, School of Medicine, Boston, MA; Laboratory of Gut-Brain Signaling (Z.I.); Laboratory Sciences and Services Division (LSSD) (Z.I.), icddr,b; National Institute of Neurosciences and Hospital (Q.D.M.), Dhaka, Bangladesh; Department of Neurology (S.H.S.), Odense University Hospital and University of Southern Denmark; Department of Neurology (S. Kusunoki), Kindai University Faculty of Medicine, Osaka-Sayama City, Japan; Department of Neurology (C.C.), Neuromuscular Unit, Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Division of Neurology (K.B.), Department of Medicine, Groote Schuur Hospital, University of Cape Town, South Africa; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, United Kingdom; Department of Neurology (B.v.d.B., H.K.), Franciscus Gasthuis & Vlietland (location: Vlietland Hospital), Schiedam; Department of Neurology (S. Arends, P.W.W.), Haga Hospital, Den Haag; Department of Neurology (L.W.G.L., L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (S. Kuwabara), Chiba University, Chuo-ku, Japan; Department of Neurology (P.V.d.B.), Neuromuscular Reference Centre, University Hospital Saint-Luc, University of Louvain, Brussels, Belgium; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Dysimmune Neuropathies Unit (G.A.M.), Department of Systems Medicine, Tor Vergata University Hospital, Rome, Italy; Department of Medicine (N.S.), University of Malaya, Kuala Lumpur, Malaysia; Department of Neurology (G.G.), University Hospital of Modena, Italy; Department of Clinical Neurophysiology (Y.P.), Reference Centre for NMD, CHU Nantes, Nantes, France; Department of Neurology (J.B.), Saarland University Medical School, Homburg (previous hospital), and MVZ Pfalzklinikum (J.B.), Kusel, Germany (current hospital); Department of Neurology (K.K., R.P.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (C.M.), Hospital Británico, Buenos Aires, Argentina; Department of Neurology (M.J.S.T.), Hospital Marques de Valdecilla, Santander; Department of Neurology (L.Q., L.M.-A.), Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, CIBERER and ERN-NMD, Spain; Department of Neurology (Y.W.), Affiliated Hospital of Jining Medical University, Shandong Province, China; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Research Hospital, Milan University, Italy; Nuffield Department of Clinical Neurosciences (S.R.), University of Oxford and Oxford University Hospitals NHS Foundation Trust, United Kingdom; Department of Neurosciences, Ophthalmology, Rehabilitation, Genetics and Maternal Sciences (A.S.), University of Genova, and IRCCS San Martino Hospital (A.S.), Genova, Italy; Department of Neurology (J.P.), Hospital Clínico de Santiago, Travesia Choupana, Santiago de Compostela (A Coruña), Spain; Department of Neurology (F.H.V.), Franciscus Gasthuis & Vlietland (location: Franciscus Gasthuis), Rotterdam, the Netherlands; Department of Neurology (W.W., N.K.), University of Vermont Medical Centre, Burlington; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (V.G., B.S.), Montefiore Medical Center, Bronx, NY; Department of Neurology (G.C.), University Milano-Bicocca, Monza, Italy; Department of Neurology (G.G.-G.), Hospital Universitario Infanta Sofía, San Sebastián de los Reyes, Spain; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, FLENI, Buenos Aires, Argentina; Department of Neurology (H.D.K.), University Health Network, University of Toronto, Ontario, Canada; Department of Neurology (E.D.), University Hospital of Larissa, Greece; Department of Neurology (S. Attarian), Reference Centre for NMD, CHU Timone ERN NMD, Marseille, France; Department of Neurology (A.J.v.d.K., F.E.), Amsterdam University Medical Centre, University of Amsterdam, Neuroscience Institute; Department of Neurology (J.P.A.S.), Maasstad Hospital, Rotterdam; Department of Neurology (H.J.G.), Reinier de Graaf Hospital, Reinier de Graafweg, Delft, the Netherlands; Department of Neurology (R.D.M.H.), King's College Hospital, Denmark Hill, London; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, United Kingdom; Department of Neurology (K.A.S.), University of Texas Health Science Centre at Houston; Department of Biology (N.K., S. Karafiath), Utah Valley University, Orem; Department of Neurology (M.V.), Lahey Hospital and Medical Center, Tufts University School of Medicine, Burlington, MA; Department of Neurology, Mental Health and Sensory Organs (NESMOS) (G.A.), Faculty of Medicine and Psychology, University of Rome 'Sapienza,' Sant' Andrea Hospital, Italy; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Alberta, Canada; Department of Neurology (C.F.), Maastricht University Medical Centre, the Netherlands; Department of Neurology (M.B.), Leeds Teaching Hospitals; Department of Neurology (R.C.R.), Addenbrooke's Hospital, Cambridge, United Kingdom; Department of Neurology (N.J.S.), University at Buffalo Jacobs School of Medicine and Biomedical Sciences, NY; Department of Neurology (R.F.), Scientific Institute San Raffaele, Milano, Italy; Department of Neurology (G.W.v.D.), Canisius Wilhelmina Hospital, Nijmegen; Department of Neurology (M.P.J.G.), Jeroen Bosch Hospital, 's-Hertogenbosch; Department of Neurology (J.V.), Leiden University Medical Centre; and Department of Immunology (B.C.J.), Erasmus MC, University Medical Centre Rotterdam, the Netherlands.; Sindrup SH; From the Department of Neurology (H.A.-H., H.A., T.H.), Aarhus University Hospital, Denmark; Department of Neurology (A.Y.D., B.v.d.B., C.V., J.R., S.E.L., S. Arends, L.W.G.L., K.K., B.C.J.), Erasmus MC, University Medical Centre Rotterdam, the Netherlands; Department of Neurology (A.M.S.), University of Michigan School of Medicine, Ann Arbor; Department of Neurology (S.A.Z.), University of Pittsburgh Medical Center, PA; Department of Neurology (H.J.W., A.D.), College of Medical, Veterinary and Life Sciences, University of Glasgow, United Kingdom; Department of Neurology (D.R.C.), Johns Hopkins University School of Medicine, Baltimore, MD; Department of Neurology (K.C.G.), St. Elizabeth's Medical Centre, Tufts University, School of Medicine, Boston, MA; Laboratory of Gut-Brain Signaling (Z.I.); Laboratory Sciences and Services Division (LSSD) (Z.I.), icddr,b; National Institute of Neurosciences and Hospital (Q.D.M.), Dhaka, Bangladesh; Department of Neurology (S.H.S.), Odense University Hospital and University of Southern Denmark; Department of Neurology (S. Kusunoki), Kindai University Faculty of Medicine, Osaka-Sayama City, Japan; Department of Neurology (C.C.), Neuromuscular Unit, Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Division of Neurology (K.B.), Department of Medicine, Groote Schuur Hospital, University of Cape Town, South Africa; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, United Kingdom; Department of Neurology (B.v.d.B., H.K.), Franciscus Gasthuis & Vlietland (location: Vlietland Hospital), Schiedam; Department of Neurology (S. Arends, P.W.W.), Haga Hospital, Den Haag; Department of Neurology (L.W.G.L., L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (S. Kuwabara), Chiba University, Chuo-ku, Japan; Department of Neurology (P.V.d.B.), Neuromuscular Reference Centre, University Hospital Saint-Luc, University of Louvain, Brussels, Belgium; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Dysimmune Neuropathies Unit (G.A.M.), Department of Systems Medicine, Tor Vergata University Hospital, Rome, Italy; Department of Medicine (N.S.), University of Malaya, Kuala Lumpur, Malaysia; Department of Neurology (G.G.), University Hospital of Modena, Italy; Department of Clinical Neurophysiology (Y.P.), Reference Centre for NMD, CHU Nantes, Nantes, France; Department of Neurology (J.B.), Saarland University Medical School, Homburg (previous hospital), and MVZ Pfalzklinikum (J.B.), Kusel, Germany (current hospital); Department of Neurology (K.K., R.P.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (C.M.), Hospital Británico, Buenos Aires, Argentina; Department of Neurology (M.J.S.T.), Hospital Marques de Valdecilla, Santander; Department of Neurology (L.Q., L.M.-A.), Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, CIBERER and ERN-NMD, Spain; Department of Neurology (Y.W.), Affiliated Hospital of Jining Medical University, Shandong Province, China; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Research Hospital, Milan University, Italy; Nuffield Department of Clinical Neurosciences (S.R.), University of Oxford and Oxford University Hospitals NHS Foundation Trust, United Kingdom; Department of Neurosciences, Ophthalmology, Rehabilitation, Genetics and Maternal Sciences (A.S.), University of Genova, and IRCCS San Martino Hospital (A.S.), Genova, Italy; Department of Neurology (J.P.), Hospital Clínico de Santiago, Travesia Choupana, Santiago de Compostela (A Coruña), Spain; Department of Neurology (F.H.V.), Franciscus Gasthuis & Vlietland (location: Franciscus Gasthuis), Rotterdam, the Netherlands; Department of Neurology (W.W., N.K.), University of Vermont Medical Centre, Burlington; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (V.G., B.S.), Montefiore Medical Center, Bronx, NY; Department of Neurology (G.C.), University Milano-Bicocca, Monza, Italy; Department of Neurology (G.G.-G.), Hospital Universitario Infanta Sofía, San Sebastián de los Reyes, Spain; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, FLENI, Buenos Aires, Argentina; Department of Neurology (H.D.K.), University Health Network, University of Toronto, Ontario, Canada; Department of Neurology (E.D.), University Hospital of Larissa, Greece; Department of Neurology (S. Attarian), Reference Centre for NMD, CHU Timone ERN NMD, Marseille, France; Department of Neurology (A.J.v.d.K., F.E.), Amsterdam University Medical Centre, University of Amsterdam, Neuroscience Institute; Department of Neurology (J.P.A.S.), Maasstad Hospital, Rotterdam; Department of Neurology (H.J.G.), Reinier de Graaf Hospital, Reinier de Graafweg, Delft, the Netherlands; Department of Neurology (R.D.M.H.), King's College Hospital, Denmark Hill, London; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, United Kingdom; Department of Neurology (K.A.S.), University of Texas Health Science Centre at Houston; Department of Biology (N.K., S. Karafiath), Utah Valley University, Orem; Department of Neurology (M.V.), Lahey Hospital and Medical Center, Tufts University School of Medicine, Burlington, MA; Department of Neurology, Mental Health and Sensory Organs (NESMOS) (G.A.), Faculty of Medicine and Psychology, University of Rome 'Sapienza,' Sant' Andrea Hospital, Italy; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Alberta, Canada; Department of Neurology (C.F.), Maastricht University Medical Centre, the Netherlands; Department of Neurology (M.B.), Leeds Teaching Hospitals; Department of Neurology (R.C.R.), Addenbrooke's Hospital, Cambridge, United Kingdom; Department of Neurology (N.J.S.), University at Buffalo Jacobs School of Medicine and Biomedical Sciences, NY; Department of Neurology (R.F.), Scientific Institute San Raffaele, Milano, Italy; Department of Neurology (G.W.v.D.), Canisius Wilhelmina Hospital, Nijmegen; Department of Neurology (M.P.J.G.), Jeroen Bosch Hospital, 's-Hertogenbosch; Department of Neurology (J.V.), Leiden University Medical Centre; and Department of Immunology (B.C.J.), Erasmus MC, University Medical Centre Rotterdam, the Netherlands.; Kusunoki S; From the Department of Neurology (H.A.-H., H.A., T.H.), Aarhus University Hospital, Denmark; Department of Neurology (A.Y.D., B.v.d.B., C.V., J.R., S.E.L., S. Arends, L.W.G.L., K.K., B.C.J.), Erasmus MC, University Medical Centre Rotterdam, the Netherlands; Department of Neurology (A.M.S.), University of Michigan School of Medicine, Ann Arbor; Department of Neurology (S.A.Z.), University of Pittsburgh Medical Center, PA; Department of Neurology (H.J.W., A.D.), College of Medical, Veterinary and Life Sciences, University of Glasgow, United Kingdom; Department of Neurology (D.R.C.), Johns Hopkins University School of Medicine, Baltimore, MD; Department of Neurology (K.C.G.), St. Elizabeth's Medical Centre, Tufts University, School of Medicine, Boston, MA; Laboratory of Gut-Brain Signaling (Z.I.); Laboratory Sciences and Services Division (LSSD) (Z.I.), icddr,b; National Institute of Neurosciences and Hospital (Q.D.M.), Dhaka, Bangladesh; Department of Neurology (S.H.S.), Odense University Hospital and University of Southern Denmark; Department of Neurology (S. Kusunoki), Kindai University Faculty of Medicine, Osaka-Sayama City, Japan; Department of Neurology (C.C.), Neuromuscular Unit, Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Division of Neurology (K.B.), Department of Medicine, Groote Schuur Hospital, University of Cape Town, South Africa; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, United Kingdom; Department of Neurology (B.v.d.B., H.K.), Franciscus Gasthuis & Vlietland (location: Vlietland Hospital), Schiedam; Department of Neurology (S. Arends, P.W.W.), Haga Hospital, Den Haag; Department of Neurology (L.W.G.L., L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (S. Kuwabara), Chiba University, Chuo-ku, Japan; Department of Neurology (P.V.d.B.), Neuromuscular Reference Centre, University Hospital Saint-Luc, University of Louvain, Brussels, Belgium; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Dysimmune Neuropathies Unit (G.A.M.), Department of Systems Medicine, Tor Vergata University Hospital, Rome, Italy; Department of Medicine (N.S.), University of Malaya, Kuala Lumpur, Malaysia; Department of Neurology (G.G.), University Hospital of Modena, Italy; Department of Clinical Neurophysiology (Y.P.), Reference Centre for NMD, CHU Nantes, Nantes, France; Department of Neurology (J.B.), Saarland University Medical School, Homburg (previous hospital), and MVZ Pfalzklinikum (J.B.), Kusel, Germany (current hospital); Department of Neurology (K.K., R.P.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (C.M.), Hospital Británico, Buenos Aires, Argentina; Department of Neurology (M.J.S.T.), Hospital Marques de Valdecilla, Santander; Department of Neurology (L.Q., L.M.-A.), Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, CIBERER and ERN-NMD, Spain; Department of Neurology (Y.W.), Affiliated Hospital of Jining Medical University, Shandong Province, China; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Research Hospital, Milan University, Italy; Nuffield Department of Clinical Neurosciences (S.R.), University of Oxford and Oxford University Hospitals NHS Foundation Trust, United Kingdom; Department of Neurosciences, Ophthalmology, Rehabilitation, Genetics and Maternal Sciences (A.S.), University of Genova, and IRCCS San Martino Hospital (A.S.), Genova, Italy; Department of Neurology (J.P.), Hospital Clínico de Santiago, Travesia Choupana, Santiago de Compostela (A Coruña), Spain; Department of Neurology (F.H.V.), Franciscus Gasthuis & Vlietland (location: Franciscus Gasthuis), Rotterdam, the Netherlands; Department of Neurology (W.W., N.K.), University of Vermont Medical Centre, Burlington; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (V.G., B.S.), Montefiore Medical Center, Bronx, NY; Department of Neurology (G.C.), University Milano-Bicocca, Monza, Italy; Department of Neurology (G.G.-G.), Hospital Universitario Infanta Sofía, San Sebastián de los Reyes, Spain; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, FLENI, Buenos Aires, Argentina; Department of Neurology (H.D.K.), University Health Network, University of Toronto, Ontario, Canada; Department of Neurology (E.D.), University Hospital of Larissa, Greece; Department of Neurology (S. Attarian), Reference Centre for NMD, CHU Timone ERN NMD, Marseille, France; Department of Neurology (A.J.v.d.K., F.E.), Amsterdam University Medical Centre, University of Amsterdam, Neuroscience Institute; Department of Neurology (J.P.A.S.), Maasstad Hospital, Rotterdam; Department of Neurology (H.J.G.), Reinier de Graaf Hospital, Reinier de Graafweg, Delft, the Netherlands; Department of Neurology (R.D.M.H.), King's College Hospital, Denmark Hill, London; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, United Kingdom; Department of Neurology (K.A.S.), University of Texas Health Science Centre at Houston; Department of Biology (N.K., S. Karafiath), Utah Valley University, Orem; Department of Neurology (M.V.), Lahey Hospital and Medical Center, Tufts University School of Medicine, Burlington, MA; Department of Neurology, Mental Health and Sensory Organs (NESMOS) (G.A.), Faculty of Medicine and Psychology, University of Rome 'Sapienza,' Sant' Andrea Hospital, Italy; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Alberta, Canada; Department of Neurology (C.F.), Maastricht University Medical Centre, the Netherlands; Department of Neurology (M.B.), Leeds Teaching Hospitals; Department of Neurology (R.C.R.), Addenbrooke's Hospital, Cambridge, United Kingdom; Department of Neurology (N.J.S.), University at Buffalo Jacobs School of Medicine and Biomedical Sciences, NY; Department of Neurology (R.F.), Scientific Institute San Raffaele, Milano, Italy; Department of Neurology (G.W.v.D.), Canisius Wilhelmina Hospital, Nijmegen; Department of Neurology (M.P.J.G.), Jeroen Bosch Hospital, 's-Hertogenbosch; Department of Neurology (J.V.), Leiden University Medical Centre; and Department of Immunology (B.C.J.), Erasmus MC, University Medical Centre Rotterdam, the Netherlands.; Davidson A; From the Department of Neurology (H.A.-H., H.A., T.H.), Aarhus University Hospital, Denmark; Department of Neurology (A.Y.D., B.v.d.B., C.V., J.R., S.E.L., S. Arends, L.W.G.L., K.K., B.C.J.), Erasmus MC, University Medical Centre Rotterdam, the Netherlands; Department of Neurology (A.M.S.), University of Michigan School of Medicine, Ann Arbor; Department of Neurology (S.A.Z.), University of Pittsburgh Medical Center, PA; Department of Neurology (H.J.W., A.D.), College of Medical, Veterinary and Life Sciences, University of Glasgow, United Kingdom; Department of Neurology (D.R.C.), Johns Hopkins University School of Medicine, Baltimore, MD; Department of Neurology (K.C.G.), St. Elizabeth's Medical Centre, Tufts University, School of Medicine, Boston, MA; Laboratory of Gut-Brain Signaling (Z.I.); Laboratory Sciences and Services Division (LSSD) (Z.I.), icddr,b; National Institute of Neurosciences and Hospital (Q.D.M.), Dhaka, Bangladesh; Department of Neurology (S.H.S.), Odense University Hospital and University of Southern Denmark; Department of Neurology (S. Kusunoki), Kindai University Faculty of Medicine, Osaka-Sayama City, Japan; Department of Neurology (C.C.), Neuromuscular Unit, Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Division of Neurology (K.B.), Department of Medicine, Groote Schuur Hospital, University of Cape Town, South Africa; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, United Kingdom; Department of Neurology (B.v.d.B., H.K.), Franciscus Gasthuis & Vlietland (location: Vlietland Hospital), Schiedam; Department of Neurology (S. Arends, P.W.W.), Haga Hospital, Den Haag; Department of Neurology (L.W.G.L., L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (S. Kuwabara), Chiba University, Chuo-ku, Japan; Department of Neurology (P.V.d.B.), Neuromuscular Reference Centre, University Hospital Saint-Luc, University of Louvain, Brussels, Belgium; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Dysimmune Neuropathies Unit (G.A.M.), Department of Systems Medicine, Tor Vergata University Hospital, Rome, Italy; Department of Medicine (N.S.), University of Malaya, Kuala Lumpur, Malaysia; Department of Neurology (G.G.), University Hospital of Modena, Italy; Department of Clinical Neurophysiology (Y.P.), Reference Centre for NMD, CHU Nantes, Nantes, France; Department of Neurology (J.B.), Saarland University Medical School, Homburg (previous hospital), and MVZ Pfalzklinikum (J.B.), Kusel, Germany (current hospital); Department of Neurology (K.K., R.P.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (C.M.), Hospital Británico, Buenos Aires, Argentina; Department of Neurology (M.J.S.T.), Hospital Marques de Valdecilla, Santander; Department of Neurology (L.Q., L.M.-A.), Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, CIBERER and ERN-NMD, Spain; Department of Neurology (Y.W.), Affiliated Hospital of Jining Medical University, Shandong Province, China; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Research Hospital, Milan University, Italy; Nuffield Department of Clinical Neurosciences (S.R.), University of Oxford and Oxford University Hospitals NHS Foundation Trust, United Kingdom; Department of Neurosciences, Ophthalmology, Rehabilitation, Genetics and Maternal Sciences (A.S.), University of Genova, and IRCCS San Martino Hospital (A.S.), Genova, Italy; Department of Neurology (J.P.), Hospital Clínico de Santiago, Travesia Choupana, Santiago de Compostela (A Coruña), Spain; Department of Neurology (F.H.V.), Franciscus Gasthuis & Vlietland (location: Franciscus Gasthuis), Rotterdam, the Netherlands; Department of Neurology (W.W., N.K.), University of Vermont Medical Centre, Burlington; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (V.G., B.S.), Montefiore Medical Center, Bronx, NY; Department of Neurology (G.C.), University Milano-Bicocca, Monza, Italy; Department of Neurology (G.G.-G.), Hospital Universitario Infanta Sofía, San Sebastián de los Reyes, Spain; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, FLENI, Buenos Aires, Argentina; Department of Neurology (H.D.K.), University Health Network, University of Toronto, Ontario, Canada; Department of Neurology (E.D.), University Hospital of Larissa, Greece; Department of Neurology (S. Attarian), Reference Centre for NMD, CHU Timone ERN NMD, Marseille, France; Department of Neurology (A.J.v.d.K., F.E.), Amsterdam University Medical Centre, University of Amsterdam, Neuroscience Institute; Department of Neurology (J.P.A.S.), Maasstad Hospital, Rotterdam; Department of Neurology (H.J.G.), Reinier de Graaf Hospital, Reinier de Graafweg, Delft, the Netherlands; Department of Neurology (R.D.M.H.), King's College Hospital, Denmark Hill, London; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, United Kingdom; Department of Neurology (K.A.S.), University of Texas Health Science Centre at Houston; Department of Biology (N.K., S. Karafiath), Utah Valley University, Orem; Department of Neurology (M.V.), Lahey Hospital and Medical Center, Tufts University School of Medicine, Burlington, MA; Department of Neurology, Mental Health and Sensory Organs (NESMOS) (G.A.), Faculty of Medicine and Psychology, University of Rome 'Sapienza,' Sant' Andrea Hospital, Italy; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Alberta, Canada; Department of Neurology (C.F.), Maastricht University Medical Centre, the Netherlands; Department of Neurology (M.B.), Leeds Teaching Hospitals; Department of Neurology (R.C.R.), Addenbrooke's Hospital, Cambridge, United Kingdom; Department of Neurology (N.J.S.), University at Buffalo Jacobs School of Medicine and Biomedical Sciences, NY; Department of Neurology (R.F.), Scientific Institute San Raffaele, Milano, Italy; Department of Neurology (G.W.v.D.), Canisius Wilhelmina Hospital, Nijmegen; Department of Neurology (M.P.J.G.), Jeroen Bosch Hospital, 's-Hertogenbosch; Department of Neurology (J.V.), Leiden University Medical Centre; and Department of Immunology (B.C.J.), Erasmus MC, University Medical Centre Rotterdam, the Netherlands.; Casasnovas C; From the Department of Neurology (H.A.-H., H.A., T.H.), Aarhus University Hospital, Denmark; Department of Neurology (A.Y.D., B.v.d.B., C.V., J.R., S.E.L., S. Arends, L.W.G.L., K.K., B.C.J.), Erasmus MC, University Medical Centre Rotterdam, the Netherlands; Department of Neurology (A.M.S.), University of Michigan School of Medicine, Ann Arbor; Department of Neurology (S.A.Z.), University of Pittsburgh Medical Center, PA; Department of Neurology (H.J.W., A.D.), College of Medical, Veterinary and Life Sciences, University of Glasgow, United Kingdom; Department of Neurology (D.R.C.), Johns Hopkins University School of Medicine, Baltimore, MD; Department of Neurology (K.C.G.), St. Elizabeth's Medical Centre, Tufts University, School of Medicine, Boston, MA; Laboratory of Gut-Brain Signaling (Z.I.); Laboratory Sciences and Services Division (LSSD) (Z.I.), icddr,b; National Institute of Neurosciences and Hospital (Q.D.M.), Dhaka, Bangladesh; Department of Neurology (S.H.S.), Odense University Hospital and University of Southern Denmark; Department of Neurology (S. Kusunoki), Kindai University Faculty of Medicine, Osaka-Sayama City, Japan; Department of Neurology (C.C.), Neuromuscular Unit, Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Division of Neurology (K.B.), Department of Medicine, Groote Schuur Hospital, University of Cape Town, South Africa; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, United Kingdom; Department of Neurology (B.v.d.B., H.K.), Franciscus Gasthuis & Vlietland (location: Vlietland Hospital), Schiedam; Department of Neurology (S. Arends, P.W.W.), Haga Hospital, Den Haag; Department of Neurology (L.W.G.L., L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (S. Kuwabara), Chiba University, Chuo-ku, Japan; Department of Neurology (P.V.d.B.), Neuromuscular Reference Centre, University Hospital Saint-Luc, University of Louvain, Brussels, Belgium; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Dysimmune Neuropathies Unit (G.A.M.), Department of Systems Medicine, Tor Vergata University Hospital, Rome, Italy; Department of Medicine (N.S.), University of Malaya, Kuala Lumpur, Malaysia; Department of Neurology (G.G.), University Hospital of Modena, Italy; Department of Clinical Neurophysiology (Y.P.), Reference Centre for NMD, CHU Nantes, Nantes, France; Department of Neurology (J.B.), Saarland University Medical School, Homburg (previous hospital), and MVZ Pfalzklinikum (J.B.), Kusel, Germany (current hospital); Department of Neurology (K.K., R.P.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (C.M.), Hospital Británico, Buenos Aires, Argentina; Department of Neurology (M.J.S.T.), Hospital Marques de Valdecilla, Santander; Department of Neurology (L.Q., L.M.-A.), Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, CIBERER and ERN-NMD, Spain; Department of Neurology (Y.W.), Affiliated Hospital of Jining Medical University, Shandong Province, China; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Research Hospital, Milan University, Italy; Nuffield Department of Clinical Neurosciences (S.R.), University of Oxford and Oxford University Hospitals NHS Foundation Trust, United Kingdom; Department of Neurosciences, Ophthalmology, Rehabilitation, Genetics and Maternal Sciences (A.S.), University of Genova, and IRCCS San Martino Hospital (A.S.), Genova, Italy; Department of Neurology (J.P.), Hospital Clínico de Santiago, Travesia Choupana, Santiago de Compostela (A Coruña), Spain; Department of Neurology (F.H.V.), Franciscus Gasthuis & Vlietland (location: Franciscus Gasthuis), Rotterdam, the Netherlands; Department of Neurology (W.W., N.K.), University of Vermont Medical Centre, Burlington; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (V.G., B.S.), Montefiore Medical Center, Bronx, NY; Department of Neurology (G.C.), University Milano-Bicocca, Monza, Italy; Department of Neurology (G.G.-G.), Hospital Universitario Infanta Sofía, San Sebastián de los Reyes, Spain; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, FLENI, Buenos Aires, Argentina; Department of Neurology (H.D.K.), University Health Network, University of Toronto, Ontario, Canada; Department of Neurology (E.D.), University Hospital of Larissa, Greece; Department of Neurology (S. Attarian), Reference Centre for NMD, CHU Timone ERN NMD, Marseille, France; Department of Neurology (A.J.v.d.K., F.E.), Amsterdam University Medical Centre, University of Amsterdam, Neuroscience Institute; Department of Neurology (J.P.A.S.), Maasstad Hospital, Rotterdam; Department of Neurology (H.J.G.), Reinier de Graaf Hospital, Reinier de Graafweg, Delft, the Netherlands; Department of Neurology (R.D.M.H.), King's College Hospital, Denmark Hill, London; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, United Kingdom; Department of Neurology (K.A.S.), University of Texas Health Science Centre at Houston; Department of Biology (N.K., S. Karafiath), Utah Valley University, Orem; Department of Neurology (M.V.), Lahey Hospital and Medical Center, Tufts University School of Medicine, Burlington, MA; Department of Neurology, Mental Health and Sensory Organs (NESMOS) (G.A.), Faculty of Medicine and Psychology, University of Rome 'Sapienza,' Sant' Andrea Hospital, Italy; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Alberta, Canada; Department of Neurology (C.F.), Maastricht University Medical Centre, the Netherlands; Department of Neurology (M.B.), Leeds Teaching Hospitals; Department of Neurology (R.C.R.), Addenbrooke's Hospital, Cambridge, United Kingdom; Department of Neurology (N.J.S.), University at Buffalo Jacobs School of Medicine and Biomedical Sciences, NY; Department of Neurology (R.F.), Scientific Institute San Raffaele, Milano, Italy; Department of Neurology (G.W.v.D.), Canisius Wilhelmina Hospital, Nijmegen; Department of Neurology (M.P.J.G.), Jeroen Bosch Hospital, 's-Hertogenbosch; Department of Neurology (J.V.), Leiden University Medical Centre; and Department of Immunology (B.C.J.), Erasmus MC, University Medical Centre Rotterdam, the Netherlands.; Bateman K; From the Department of Neurology (H.A.-H., H.A., T.H.), Aarhus University Hospital, Denmark; Department of Neurology (A.Y.D., B.v.d.B., C.V., J.R., S.E.L., S. Arends, L.W.G.L., K.K., B.C.J.), Erasmus MC, University Medical Centre Rotterdam, the Netherlands; Department of Neurology (A.M.S.), University of Michigan School of Medicine, Ann Arbor; Department of Neurology (S.A.Z.), University of Pittsburgh Medical Center, PA; Department of Neurology (H.J.W., A.D.), College of Medical, Veterinary and Life Sciences, University of Glasgow, United Kingdom; Department of Neurology (D.R.C.), Johns Hopkins University School of Medicine, Baltimore, MD; Department of Neurology (K.C.G.), St. Elizabeth's Medical Centre, Tufts University, School of Medicine, Boston, MA; Laboratory of Gut-Brain Signaling (Z.I.); Laboratory Sciences and Services Division (LSSD) (Z.I.), icddr,b; National Institute of Neurosciences and Hospital (Q.D.M.), Dhaka, Bangladesh; Department of Neurology (S.H.S.), Odense University Hospital and University of Southern Denmark; Department of Neurology (S. Kusunoki), Kindai University Faculty of Medicine, Osaka-Sayama City, Japan; Department of Neurology (C.C.), Neuromuscular Unit, Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Division of Neurology (K.B.), Department of Medicine, Groote Schuur Hospital, University of Cape Town, South Africa; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, United Kingdom; Department of Neurology (B.v.d.B., H.K.), Franciscus Gasthuis & Vlietland (location: Vlietland Hospital), Schiedam; Department of Neurology (S. Arends, P.W.W.), Haga Hospital, Den Haag; Department of Neurology (L.W.G.L., L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (S. Kuwabara), Chiba University, Chuo-ku, Japan; Department of Neurology (P.V.d.B.), Neuromuscular Reference Centre, University Hospital Saint-Luc, University of Louvain, Brussels, Belgium; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Dysimmune Neuropathies Unit (G.A.M.), Department of Systems Medicine, Tor Vergata University Hospital, Rome, Italy; Department of Medicine (N.S.), University of Malaya, Kuala Lumpur, Malaysia; Department of Neurology (G.G.), University Hospital of Modena, Italy; Department of Clinical Neurophysiology (Y.P.), Reference Centre for NMD, CHU Nantes, Nantes, France; Department of Neurology (J.B.), Saarland University Medical School, Homburg (previous hospital), and MVZ Pfalzklinikum (J.B.), Kusel, Germany (current hospital); Department of Neurology (K.K., R.P.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (C.M.), Hospital Británico, Buenos Aires, Argentina; Department of Neurology (M.J.S.T.), Hospital Marques de Valdecilla, Santander; Department of Neurology (L.Q., L.M.-A.), Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, CIBERER and ERN-NMD, Spain; Department of Neurology (Y.W.), Affiliated Hospital of Jining Medical University, Shandong Province, China; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Research Hospital, Milan University, Italy; Nuffield Department of Clinical Neurosciences (S.R.), University of Oxford and Oxford University Hospitals NHS Foundation Trust, United Kingdom; Department of Neurosciences, Ophthalmology, Rehabilitation, Genetics and Maternal Sciences (A.S.), University of Genova, and IRCCS San Martino Hospital (A.S.), Genova, Italy; Department of Neurology (J.P.), Hospital Clínico de Santiago, Travesia Choupana, Santiago de Compostela (A Coruña), Spain; Department of Neurology (F.H.V.), Franciscus Gasthuis & Vlietland (location: Franciscus Gasthuis), Rotterdam, the Netherlands; Department of Neurology (W.W., N.K.), University of Vermont Medical Centre, Burlington; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (V.G., B.S.), Montefiore Medical Center, Bronx, NY; Department of Neurology (G.C.), University Milano-Bicocca, Monza, Italy; Department of Neurology (G.G.-G.), Hospital Universitario Infanta Sofía, San Sebastián de los Reyes, Spain; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, FLENI, Buenos Aires, Argentina; Department of Neurology (H.D.K.), University Health Network, University of Toronto, Ontario, Canada; Department of Neurology (E.D.), University Hospital of Larissa, Greece; Department of Neurology (S. Attarian), Reference Centre for NMD, CHU Timone ERN NMD, Marseille, France; Department of Neurology (A.J.v.d.K., F.E.), Amsterdam University Medical Centre, University of Amsterdam, Neuroscience Institute; Department of Neurology (J.P.A.S.), Maasstad Hospital, Rotterdam; Department of Neurology (H.J.G.), Reinier de Graaf Hospital, Reinier de Graafweg, Delft, the Netherlands; Department of Neurology (R.D.M.H.), King's College Hospital, Denmark Hill, London; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, United Kingdom; Department of Neurology (K.A.S.), University of Texas Health Science Centre at Houston; Department of Biology (N.K., S. Karafiath), Utah Valley University, Orem; Department of Neurology (M.V.), Lahey Hospital and Medical Center, Tufts University School of Medicine, Burlington, MA; Department of Neurology, Mental Health and Sensory Organs (NESMOS) (G.A.), Faculty of Medicine and Psychology, University of Rome 'Sapienza,' Sant' Andrea Hospital, Italy; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Alberta, Canada; Department of Neurology (C.F.), Maastricht University Medical Centre, the Netherlands; Department of Neurology (M.B.), Leeds Teaching Hospitals; Department of Neurology (R.C.R.), Addenbrooke's Hospital, Cambridge, United Kingdom; Department of Neurology (N.J.S.), University at Buffalo Jacobs School of Medicine and Biomedical Sciences, NY; Department of Neurology (R.F.), Scientific Institute San Raffaele, Milano, Italy; Department of Neurology (G.W.v.D.), Canisius Wilhelmina Hospital, Nijmegen; Department of Neurology (M.P.J.G.), Jeroen Bosch Hospital, 's-Hertogenbosch; Department of Neurology (J.V.), Leiden University Medical Centre; and Department of Immunology (B.C.J.), Erasmus MC, University Medical Centre Rotterdam, the Netherlands.; Miller JAL; From the Department of Neurology (H.A.-H., H.A., T.H.), Aarhus University Hospital, Denmark; Department of Neurology (A.Y.D., B.v.d.B., C.V., J.R., S.E.L., S. Arends, L.W.G.L., K.K., B.C.J.), Erasmus MC, University Medical Centre Rotterdam, the Netherlands; Department of Neurology (A.M.S.), University of Michigan School of Medicine, Ann Arbor; Department of Neurology (S.A.Z.), University of Pittsburgh Medical Center, PA; Department of Neurology (H.J.W., A.D.), College of Medical, Veterinary and Life Sciences, University of Glasgow, United Kingdom; Department of Neurology (D.R.C.), Johns Hopkins University School of Medicine, Baltimore, MD; Department of Neurology (K.C.G.), St. Elizabeth's Medical Centre, Tufts University, School of Medicine, Boston, MA; Laboratory of Gut-Brain Signaling (Z.I.); Laboratory Sciences and Services Division (LSSD) (Z.I.), icddr,b; National Institute of Neurosciences and Hospital (Q.D.M.), Dhaka, Bangladesh; Department of Neurology (S.H.S.), Odense University Hospital and University of Southern Denmark; Department of Neurology (S. Kusunoki), Kindai University Faculty of Medicine, Osaka-Sayama City, Japan; Department of Neurology (C.C.), Neuromuscular Unit, Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Division of Neurology (K.B.), Department of Medicine, Groote Schuur Hospital, University of Cape Town, South Africa; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, United Kingdom; Department of Neurology (B.v.d.B., H.K.), Franciscus Gasthuis & Vlietland (location: Vlietland Hospital), Schiedam; Department of Neurology (S. Arends, P.W.W.), Haga Hospital, Den Haag; Department of Neurology (L.W.G.L., L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (S. Kuwabara), Chiba University, Chuo-ku, Japan; Department of Neurology (P.V.d.B.), Neuromuscular Reference Centre, University Hospital Saint-Luc, University of Louvain, Brussels, Belgium; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Dysimmune Neuropathies Unit (G.A.M.), Department of Systems Medicine, Tor Vergata University Hospital, Rome, Italy; Department of Medicine (N.S.), University of Malaya, Kuala Lumpur, Malaysia; Department of Neurology (G.G.), University Hospital of Modena, Italy; Department of Clinical Neurophysiology (Y.P.), Reference Centre for NMD, CHU Nantes, Nantes, France; Department of Neurology (J.B.), Saarland University Medical School, Homburg (previous hospital), and MVZ Pfalzklinikum (J.B.), Kusel, Germany (current hospital); Department of Neurology (K.K., R.P.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (C.M.), Hospital Británico, Buenos Aires, Argentina; Department of Neurology (M.J.S.T.), Hospital Marques de Valdecilla, Santander; Department of Neurology (L.Q., L.M.-A.), Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, CIBERER and ERN-NMD, Spain; Department of Neurology (Y.W.), Affiliated Hospital of Jining Medical University, Shandong Province, China; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Research Hospital, Milan University, Italy; Nuffield Department of Clinical Neurosciences (S.R.), University of Oxford and Oxford University Hospitals NHS Foundation Trust, United Kingdom; Department of Neurosciences, Ophthalmology, Rehabilitation, Genetics and Maternal Sciences (A.S.), University of Genova, and IRCCS San Martino Hospital (A.S.), Genova, Italy; Department of Neurology (J.P.), Hospital Clínico de Santiago, Travesia Choupana, Santiago de Compostela (A Coruña), Spain; Department of Neurology (F.H.V.), Franciscus Gasthuis & Vlietland (location: Franciscus Gasthuis), Rotterdam, the Netherlands; Department of Neurology (W.W., N.K.), University of Vermont Medical Centre, Burlington; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (V.G., B.S.), Montefiore Medical Center, Bronx, NY; Department of Neurology (G.C.), University Milano-Bicocca, Monza, Italy; Department of Neurology (G.G.-G.), Hospital Universitario Infanta Sofía, San Sebastián de los Reyes, Spain; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, FLENI, Buenos Aires, Argentina; Department of Neurology (H.D.K.), University Health Network, University of Toronto, Ontario, Canada; Department of Neurology (E.D.), University Hospital of Larissa, Greece; Department of Neurology (S. Attarian), Reference Centre for NMD, CHU Timone ERN NMD, Marseille, France; Department of Neurology (A.J.v.d.K., F.E.), Amsterdam University Medical Centre, University of Amsterdam, Neuroscience Institute; Department of Neurology (J.P.A.S.), Maasstad Hospital, Rotterdam; Department of Neurology (H.J.G.), Reinier de Graaf Hospital, Reinier de Graafweg, Delft, the Netherlands; Department of Neurology (R.D.M.H.), King's College Hospital, Denmark Hill, London; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, United Kingdom; Department of Neurology (K.A.S.), University of Texas Health Science Centre at Houston; Department of Biology (N.K., S. Karafiath), Utah Valley University, Orem; Department of Neurology (M.V.), Lahey Hospital and Medical Center, Tufts University School of Medicine, Burlington, MA; Department of Neurology, Mental Health and Sensory Organs (NESMOS) (G.A.), Faculty of Medicine and Psychology, University of Rome 'Sapienza,' Sant' Andrea Hospital, Italy; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Alberta, Canada; Department of Neurology (C.F.), Maastricht University Medical Centre, the Netherlands; Department of Neurology (M.B.), Leeds Teaching Hospitals; Department of Neurology (R.C.R.), Addenbrooke's Hospital, Cambridge, United Kingdom; Department of Neurology (N.J.S.), University at Buffalo Jacobs School of Medicine and Biomedical Sciences, NY; Department of Neurology (R.F.), Scientific Institute San Raffaele, Milano, Italy; Department of Neurology (G.W.v.D.), Canisius Wilhelmina Hospital, Nijmegen; Department of Neurology (M.P.J.G.), Jeroen Bosch Hospital, 's-Hertogenbosch; Department of Neurology (J.V.), Leiden University Medical Centre; and Department of Immunology (B.C.J.), Erasmus MC, University Medical Centre Rotterdam, the Netherlands.; van den Berg B; From the Department of Neurology (H.A.-H., H.A., T.H.), Aarhus University Hospital, Denmark; Department of Neurology (A.Y.D., B.v.d.B., C.V., J.R., S.E.L., S. Arends, L.W.G.L., K.K., B.C.J.), Erasmus MC, University Medical Centre Rotterdam, the Netherlands; Department of Neurology (A.M.S.), University of Michigan School of Medicine, Ann Arbor; Department of Neurology (S.A.Z.), University of Pittsburgh Medical Center, PA; Department of Neurology (H.J.W., A.D.), College of Medical, Veterinary and Life Sciences, University of Glasgow, United Kingdom; Department of Neurology (D.R.C.), Johns Hopkins University School of Medicine, Baltimore, MD; Department of Neurology (K.C.G.), St. Elizabeth's Medical Centre, Tufts University, School of Medicine, Boston, MA; Laboratory of Gut-Brain Signaling (Z.I.); Laboratory Sciences and Services Division (LSSD) (Z.I.), icddr,b; National Institute of Neurosciences and Hospital (Q.D.M.), Dhaka, Bangladesh; Department of Neurology (S.H.S.), Odense University Hospital and University of Southern Denmark; Department of Neurology (S. Kusunoki), Kindai University Faculty of Medicine, Osaka-Sayama City, Japan; Department of Neurology (C.C.), Neuromuscular Unit, Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Division of Neurology (K.B.), Department of Medicine, Groote Schuur Hospital, University of Cape Town, South Africa; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, United Kingdom; Department of Neurology (B.v.d.B., H.K.), Franciscus Gasthuis & Vlietland (location: Vlietland Hospital), Schiedam; Department of Neurology (S. Arends, P.W.W.), Haga Hospital, Den Haag; Department of Neurology (L.W.G.L., L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (S. Kuwabara), Chiba University, Chuo-ku, Japan; Department of Neurology (P.V.d.B.), Neuromuscular Reference Centre, University Hospital Saint-Luc, University of Louvain, Brussels, Belgium; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Dysimmune Neuropathies Unit (G.A.M.), Department of Systems Medicine, Tor Vergata University Hospital, Rome, Italy; Department of Medicine (N.S.), University of Malaya, Kuala Lumpur, Malaysia; Department of Neurology (G.G.), University Hospital of Modena, Italy; Department of Clinical Neurophysiology (Y.P.), Reference Centre for NMD, CHU Nantes, Nantes, France; Department of Neurology (J.B.), Saarland University Medical School, Homburg (previous hospital), and MVZ Pfalzklinikum (J.B.), Kusel, Germany (current hospital); Department of Neurology (K.K., R.P.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (C.M.), Hospital Británico, Buenos Aires, Argentina; Department of Neurology (M.J.S.T.), Hospital Marques de Valdecilla, Santander; Department of Neurology (L.Q., L.M.-A.), Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, CIBERER and ERN-NMD, Spain; Department of Neurology (Y.W.), Affiliated Hospital of Jining Medical University, Shandong Province, China; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Research Hospital, Milan University, Italy; Nuffield Department of Clinical Neurosciences (S.R.), University of Oxford and Oxford University Hospitals NHS Foundation Trust, United Kingdom; Department of Neurosciences, Ophthalmology, Rehabilitation, Genetics and Maternal Sciences (A.S.), University of Genova, and IRCCS San Martino Hospital (A.S.), Genova, Italy; Department of Neurology (J.P.), Hospital Clínico de Santiago, Travesia Choupana, Santiago de Compostela (A Coruña), Spain; Department of Neurology (F.H.V.), Franciscus Gasthuis & Vlietland (location: Franciscus Gasthuis), Rotterdam, the Netherlands; Department of Neurology (W.W., N.K.), University of Vermont Medical Centre, Burlington; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (V.G., B.S.), Montefiore Medical Center, Bronx, NY; Department of Neurology (G.C.), University Milano-Bicocca, Monza, Italy; Department of Neurology (G.G.-G.), Hospital Universitario Infanta Sofía, San Sebastián de los Reyes, Spain; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, FLENI, Buenos Aires, Argentina; Department of Neurology (H.D.K.), University Health Network, University of Toronto, Ontario, Canada; Department of Neurology (E.D.), University Hospital of Larissa, Greece; Department of Neurology (S. Attarian), Reference Centre for NMD, CHU Timone ERN NMD, Marseille, France; Department of Neurology (A.J.v.d.K., F.E.), Amsterdam University Medical Centre, University of Amsterdam, Neuroscience Institute; Department of Neurology (J.P.A.S.), Maasstad Hospital, Rotterdam; Department of Neurology (H.J.G.), Reinier de Graaf Hospital, Reinier de Graafweg, Delft, the Netherlands; Department of Neurology (R.D.M.H.), King's College Hospital, Denmark Hill, London; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, United Kingdom; Department of Neurology (K.A.S.), University of Texas Health Science Centre at Houston; Department of Biology (N.K., S. Karafiath), Utah Valley University, Orem; Department of Neurology (M.V.), Lahey Hospital and Medical Center, Tufts University School of Medicine, Burlington, MA; Department of Neurology, Mental Health and Sensory Organs (NESMOS) (G.A.), Faculty of Medicine and Psychology, University of Rome 'Sapienza,' Sant' Andrea Hospital, Italy; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Alberta, Canada; Department of Neurology (C.F.), Maastricht University Medical Centre, the Netherlands; Department of Neurology (M.B.), Leeds Teaching Hospitals; Department of Neurology (R.C.R.), Addenbrooke's Hospital, Cambridge, United Kingdom; Department of Neurology (N.J.S.), University at Buffalo Jacobs School of Medicine and Biomedical Sciences, NY; Department of Neurology (R.F.), Scientific Institute San Raffaele, Milano, Italy; Department of Neurology (G.W.v.D.), Canisius Wilhelmina Hospital, Nijmegen; Department of Neurology (M.P.J.G.), Jeroen Bosch Hospital, 's-Hertogenbosch; Department of Neurology (J.V.), Leiden University Medical Centre; and Department of Immunology (B.C.J.), Erasmus MC, University Medical Centre Rotterdam, the Netherlands.; Verboon C; From the Department of Neurology (H.A.-H., H.A., T.H.), Aarhus University Hospital, Denmark; Department of Neurology (A.Y.D., B.v.d.B., C.V., J.R., S.E.L., S. Arends, L.W.G.L., K.K., B.C.J.), Erasmus MC, University Medical Centre Rotterdam, the Netherlands; Department of Neurology (A.M.S.), University of Michigan School of Medicine, Ann Arbor; Department of Neurology (S.A.Z.), University of Pittsburgh Medical Center, PA; Department of Neurology (H.J.W., A.D.), College of Medical, Veterinary and Life Sciences, University of Glasgow, United Kingdom; Department of Neurology (D.R.C.), Johns Hopkins University School of Medicine, Baltimore, MD; Department of Neurology (K.C.G.), St. Elizabeth's Medical Centre, Tufts University, School of Medicine, Boston, MA; Laboratory of Gut-Brain Signaling (Z.I.); Laboratory Sciences and Services Division (LSSD) (Z.I.), icddr,b; National Institute of Neurosciences and Hospital (Q.D.M.), Dhaka, Bangladesh; Department of Neurology (S.H.S.), Odense University Hospital and University of Southern Denmark; Department of Neurology (S. Kusunoki), Kindai University Faculty of Medicine, Osaka-Sayama City, Japan; Department of Neurology (C.C.), Neuromuscular Unit, Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Division of Neurology (K.B.), Department of Medicine, Groote Schuur Hospital, University of Cape Town, South Africa; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, United Kingdom; Department of Neurology (B.v.d.B., H.K.), Franciscus Gasthuis & Vlietland (location: Vlietland Hospital), Schiedam; Department of Neurology (S. Arends, P.W.W.), Haga Hospital, Den Haag; Department of Neurology (L.W.G.L., L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (S. Kuwabara), Chiba University, Chuo-ku, Japan; Department of Neurology (P.V.d.B.), Neuromuscular Reference Centre, University Hospital Saint-Luc, University of Louvain, Brussels, Belgium; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Dysimmune Neuropathies Unit (G.A.M.), Department of Systems Medicine, Tor Vergata University Hospital, Rome, Italy; Department of Medicine (N.S.), University of Malaya, Kuala Lumpur, Malaysia; Department of Neurology (G.G.), University Hospital of Modena, Italy; Department of Clinical Neurophysiology (Y.P.), Reference Centre for NMD, CHU Nantes, Nantes, France; Department of Neurology (J.B.), Saarland University Medical School, Homburg (previous hospital), and MVZ Pfalzklinikum (J.B.), Kusel, Germany (current hospital); Department of Neurology (K.K., R.P.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (C.M.), Hospital Británico, Buenos Aires, Argentina; Department of Neurology (M.J.S.T.), Hospital Marques de Valdecilla, Santander; Department of Neurology (L.Q., L.M.-A.), Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, CIBERER and ERN-NMD, Spain; Department of Neurology (Y.W.), Affiliated Hospital of Jining Medical University, Shandong Province, China; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Research Hospital, Milan University, Italy; Nuffield Department of Clinical Neurosciences (S.R.), University of Oxford and Oxford University Hospitals NHS Foundation Trust, United Kingdom; Department of Neurosciences, Ophthalmology, Rehabilitation, Genetics and Maternal Sciences (A.S.), University of Genova, and IRCCS San Martino Hospital (A.S.), Genova, Italy; Department of Neurology (J.P.), Hospital Clínico de Santiago, Travesia Choupana, Santiago de Compostela (A Coruña), Spain; Department of Neurology (F.H.V.), Franciscus Gasthuis & Vlietland (location: Franciscus Gasthuis), Rotterdam, the Netherlands; Department of Neurology (W.W., N.K.), University of Vermont Medical Centre, Burlington; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (V.G., B.S.), Montefiore Medical Center, Bronx, NY; Department of Neurology (G.C.), University Milano-Bicocca, Monza, Italy; Department of Neurology (G.G.-G.), Hospital Universitario Infanta Sofía, San Sebastián de los Reyes, Spain; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, FLENI, Buenos Aires, Argentina; Department of Neurology (H.D.K.), University Health Network, University of Toronto, Ontario, Canada; Department of Neurology (E.D.), University Hospital of Larissa, Greece; Department of Neurology (S. Attarian), Reference Centre for NMD, CHU Timone ERN NMD, Marseille, France; Department of Neurology (A.J.v.d.K., F.E.), Amsterdam University Medical Centre, University of Amsterdam, Neuroscience Institute; Department of Neurology (J.P.A.S.), Maasstad Hospital, Rotterdam; Department of Neurology (H.J.G.), Reinier de Graaf Hospital, Reinier de Graafweg, Delft, the Netherlands; Department of Neurology (R.D.M.H.), King's College Hospital, Denmark Hill, London; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, United Kingdom; Department of Neurology (K.A.S.), University of Texas Health Science Centre at Houston; Department of Biology (N.K., S. Karafiath), Utah Valley University, Orem; Department of Neurology (M.V.), Lahey Hospital and Medical Center, Tufts University School of Medicine, Burlington, MA; Department of Neurology, Mental Health and Sensory Organs (NESMOS) (G.A.), Faculty of Medicine and Psychology, University of Rome 'Sapienza,' Sant' Andrea Hospital, Italy; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Alberta, Canada; Department of Neurology (C.F.), Maastricht University Medical Centre, the Netherlands; Department of Neurology (M.B.), Leeds Teaching Hospitals; Department of Neurology (R.C.R.), Addenbrooke's Hospital, Cambridge, United Kingdom; Department of Neurology (N.J.S.), University at Buffalo Jacobs School of Medicine and Biomedical Sciences, NY; Department of Neurology (R.F.), Scientific Institute San Raffaele, Milano, Italy; Department of Neurology (G.W.v.D.), Canisius Wilhelmina Hospital, Nijmegen; Department of Neurology (M.P.J.G.), Jeroen Bosch Hospital, 's-Hertogenbosch; Department of Neurology (J.V.), Leiden University Medical Centre; and Department of Immunology (B.C.J.), Erasmus MC, University Medical Centre Rotterdam, the Netherlands.; Roodbol J; From the Department of Neurology (H.A.-H., H.A., T.H.), Aarhus University Hospital, Denmark; Department of Neurology (A.Y.D., B.v.d.B., C.V., J.R., S.E.L., S. Arends, L.W.G.L., K.K., B.C.J.), Erasmus MC, University Medical Centre Rotterdam, the Netherlands; Department of Neurology (A.M.S.), University of Michigan School of Medicine, Ann Arbor; Department of Neurology (S.A.Z.), University of Pittsburgh Medical Center, PA; Department of Neurology (H.J.W., A.D.), College of Medical, Veterinary and Life Sciences, University of Glasgow, United Kingdom; Department of Neurology (D.R.C.), Johns Hopkins University School of Medicine, Baltimore, MD; Department of Neurology (K.C.G.), St. Elizabeth's Medical Centre, Tufts University, School of Medicine, Boston, MA; Laboratory of Gut-Brain Signaling (Z.I.); Laboratory Sciences and Services Division (LSSD) (Z.I.), icddr,b; National Institute of Neurosciences and Hospital (Q.D.M.), Dhaka, Bangladesh; Department of Neurology (S.H.S.), Odense University Hospital and University of Southern Denmark; Department of Neurology (S. Kusunoki), Kindai University Faculty of Medicine, Osaka-Sayama City, Japan; Department of Neurology (C.C.), Neuromuscular Unit, Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Division of Neurology (K.B.), Department of Medicine, Groote Schuur Hospital, University of Cape Town, South Africa; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, United Kingdom; Department of Neurology (B.v.d.B., H.K.), Franciscus Gasthuis & Vlietland (location: Vlietland Hospital), Schiedam; Department of Neurology (S. Arends, P.W.W.), Haga Hospital, Den Haag; Department of Neurology (L.W.G.L., L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (S. Kuwabara), Chiba University, Chuo-ku, Japan; Department of Neurology (P.V.d.B.), Neuromuscular Reference Centre, University Hospital Saint-Luc, University of Louvain, Brussels, Belgium; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Dysimmune Neuropathies Unit (G.A.M.), Department of Systems Medicine, Tor Vergata University Hospital, Rome, Italy; Department of Medicine (N.S.), University of Malaya, Kuala Lumpur, Malaysia; Department of Neurology (G.G.), University Hospital of Modena, Italy; Department of Clinical Neurophysiology (Y.P.), Reference Centre for NMD, CHU Nantes, Nantes, France; Department of Neurology (J.B.), Saarland University Medical School, Homburg (previous hospital), and MVZ Pfalzklinikum (J.B.), Kusel, Germany (current hospital); Department of Neurology (K.K., R.P.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (C.M.), Hospital Británico, Buenos Aires, Argentina; Department of Neurology (M.J.S.T.), Hospital Marques de Valdecilla, Santander; Department of Neurology (L.Q., L.M.-A.), Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, CIBERER and ERN-NMD, Spain; Department of Neurology (Y.W.), Affiliated Hospital of Jining Medical University, Shandong Province, China; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Research Hospital, Milan University, Italy; Nuffield Department of Clinical Neurosciences (S.R.), University of Oxford and Oxford University Hospitals NHS Foundation Trust, United Kingdom; Department of Neurosciences, Ophthalmology, Rehabilitation, Genetics and Maternal Sciences (A.S.), University of Genova, and IRCCS San Martino Hospital (A.S.), Genova, Italy; Department of Neurology (J.P.), Hospital Clínico de Santiago, Travesia Choupana, Santiago de Compostela (A Coruña), Spain; Department of Neurology (F.H.V.), Franciscus Gasthuis & Vlietland (location: Franciscus Gasthuis), Rotterdam, the Netherlands; Department of Neurology (W.W., N.K.), University of Vermont Medical Centre, Burlington; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (V.G., B.S.), Montefiore Medical Center, Bronx, NY; Department of Neurology (G.C.), University Milano-Bicocca, Monza, Italy; Department of Neurology (G.G.-G.), Hospital Universitario Infanta Sofía, San Sebastián de los Reyes, Spain; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, FLENI, Buenos Aires, Argentina; Department of Neurology (H.D.K.), University Health Network, University of Toronto, Ontario, Canada; Department of Neurology (E.D.), University Hospital of Larissa, Greece; Department of Neurology (S. Attarian), Reference Centre for NMD, CHU Timone ERN NMD, Marseille, France; Department of Neurology (A.J.v.d.K., F.E.), Amsterdam University Medical Centre, University of Amsterdam, Neuroscience Institute; Department of Neurology (J.P.A.S.), Maasstad Hospital, Rotterdam; Department of Neurology (H.J.G.), Reinier de Graaf Hospital, Reinier de Graafweg, Delft, the Netherlands; Department of Neurology (R.D.M.H.), King's College Hospital, Denmark Hill, London; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, United Kingdom; Department of Neurology (K.A.S.), University of Texas Health Science Centre at Houston; Department of Biology (N.K., S. Karafiath), Utah Valley University, Orem; Department of Neurology (M.V.), Lahey Hospital and Medical Center, Tufts University School of Medicine, Burlington, MA; Department of Neurology, Mental Health and Sensory Organs (NESMOS) (G.A.), Faculty of Medicine and Psychology, University of Rome 'Sapienza,' Sant' Andrea Hospital, Italy; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Alberta, Canada; Department of Neurology (C.F.), Maastricht University Medical Centre, the Netherlands; Department of Neurology (M.B.), Leeds Teaching Hospitals; Department of Neurology (R.C.R.), Addenbrooke's Hospital, Cambridge, United Kingdom; Department of Neurology (N.J.S.), University at Buffalo Jacobs School of Medicine and Biomedical Sciences, NY; Department of Neurology (R.F.), Scientific Institute San Raffaele, Milano, Italy; Department of Neurology (G.W.v.D.), Canisius Wilhelmina Hospital, Nijmegen; Department of Neurology (M.P.J.G.), Jeroen Bosch Hospital, 's-Hertogenbosch; Department of Neurology (J.V.), Leiden University Medical Centre; and Department of Immunology (B.C.J.), Erasmus MC, University Medical Centre Rotterdam, the Netherlands.; Leonhard SE; From the Department of Neurology (H.A.-H., H.A., T.H.), Aarhus University Hospital, Denmark; Department of Neurology (A.Y.D., B.v.d.B., C.V., J.R., S.E.L., S. Arends, L.W.G.L., K.K., B.C.J.), Erasmus MC, University Medical Centre Rotterdam, the Netherlands; Department of Neurology (A.M.S.), University of Michigan School of Medicine, Ann Arbor; Department of Neurology (S.A.Z.), University of Pittsburgh Medical Center, PA; Department of Neurology (H.J.W., A.D.), College of Medical, Veterinary and Life Sciences, University of Glasgow, United Kingdom; Department of Neurology (D.R.C.), Johns Hopkins University School of Medicine, Baltimore, MD; Department of Neurology (K.C.G.), St. Elizabeth's Medical Centre, Tufts University, School of Medicine, Boston, MA; Laboratory of Gut-Brain Signaling (Z.I.); Laboratory Sciences and Services Division (LSSD) (Z.I.), icddr,b; National Institute of Neurosciences and Hospital (Q.D.M.), Dhaka, Bangladesh; Department of Neurology (S.H.S.), Odense University Hospital and University of Southern Denmark; Department of Neurology (S. Kusunoki), Kindai University Faculty of Medicine, Osaka-Sayama City, Japan; Department of Neurology (C.C.), Neuromuscular Unit, Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Division of Neurology (K.B.), Department of Medicine, Groote Schuur Hospital, University of Cape Town, South Africa; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, United Kingdom; Department of Neurology (B.v.d.B., H.K.), Franciscus Gasthuis & Vlietland (location: Vlietland Hospital), Schiedam; Department of Neurology (S. Arends, P.W.W.), Haga Hospital, Den Haag; Department of Neurology (L.W.G.L., L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (S. Kuwabara), Chiba University, Chuo-ku, Japan; Department of Neurology (P.V.d.B.), Neuromuscular Reference Centre, University Hospital Saint-Luc, University of Louvain, Brussels, Belgium; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Dysimmune Neuropathies Unit (G.A.M.), Department of Systems Medicine, Tor Vergata University Hospital, Rome, Italy; Department of Medicine (N.S.), University of Malaya, Kuala Lumpur, Malaysia; Department of Neurology (G.G.), University Hospital of Modena, Italy; Department of Clinical Neurophysiology (Y.P.), Reference Centre for NMD, CHU Nantes, Nantes, France; Department of Neurology (J.B.), Saarland University Medical School, Homburg (previous hospital), and MVZ Pfalzklinikum (J.B.), Kusel, Germany (current hospital); Department of Neurology (K.K., R.P.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (C.M.), Hospital Británico, Buenos Aires, Argentina; Department of Neurology (M.J.S.T.), Hospital Marques de Valdecilla, Santander; Department of Neurology (L.Q., L.M.-A.), Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, CIBERER and ERN-NMD, Spain; Department of Neurology (Y.W.), Affiliated Hospital of Jining Medical University, Shandong Province, China; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Research Hospital, Milan University, Italy; Nuffield Department of Clinical Neurosciences (S.R.), University of Oxford and Oxford University Hospitals NHS Foundation Trust, United Kingdom; Department of Neurosciences, Ophthalmology, Rehabilitation, Genetics and Maternal Sciences (A.S.), University of Genova, and IRCCS San Martino Hospital (A.S.), Genova, Italy; Department of Neurology (J.P.), Hospital Clínico de Santiago, Travesia Choupana, Santiago de Compostela (A Coruña), Spain; Department of Neurology (F.H.V.), Franciscus Gasthuis & Vlietland (location: Franciscus Gasthuis), Rotterdam, the Netherlands; Department of Neurology (W.W., N.K.), University of Vermont Medical Centre, Burlington; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (V.G., B.S.), Montefiore Medical Center, Bronx, NY; Department of Neurology (G.C.), University Milano-Bicocca, Monza, Italy; Department of Neurology (G.G.-G.), Hospital Universitario Infanta Sofía, San Sebastián de los Reyes, Spain; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, FLENI, Buenos Aires, Argentina; Department of Neurology (H.D.K.), University Health Network, University of Toronto, Ontario, Canada; Department of Neurology (E.D.), University Hospital of Larissa, Greece; Department of Neurology (S. Attarian), Reference Centre for NMD, CHU Timone ERN NMD, Marseille, France; Department of Neurology (A.J.v.d.K., F.E.), Amsterdam University Medical Centre, University of Amsterdam, Neuroscience Institute; Department of Neurology (J.P.A.S.), Maasstad Hospital, Rotterdam; Department of Neurology (H.J.G.), Reinier de Graaf Hospital, Reinier de Graafweg, Delft, the Netherlands; Department of Neurology (R.D.M.H.), King's College Hospital, Denmark Hill, London; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, United Kingdom; Department of Neurology (K.A.S.), University of Texas Health Science Centre at Houston; Department of Biology (N.K., S. Karafiath), Utah Valley University, Orem; Department of Neurology (M.V.), Lahey Hospital and Medical Center, Tufts University School of Medicine, Burlington, MA; Department of Neurology, Mental Health and Sensory Organs (NESMOS) (G.A.), Faculty of Medicine and Psychology, University of Rome 'Sapienza,' Sant' Andrea Hospital, Italy; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Alberta, Canada; Department of Neurology (C.F.), Maastricht University Medical Centre, the Netherlands; Department of Neurology (M.B.), Leeds Teaching Hospitals; Department of Neurology (R.C.R.), Addenbrooke's Hospital, Cambridge, United Kingdom; Department of Neurology (N.J.S.), University at Buffalo Jacobs School of Medicine and Biomedical Sciences, NY; Department of Neurology (R.F.), Scientific Institute San Raffaele, Milano, Italy; Department of Neurology (G.W.v.D.), Canisius Wilhelmina Hospital, Nijmegen; Department of Neurology (M.P.J.G.), Jeroen Bosch Hospital, 's-Hertogenbosch; Department of Neurology (J.V.), Leiden University Medical Centre; and Department of Immunology (B.C.J.), Erasmus MC, University Medical Centre Rotterdam, the Netherlands.; Arends S; From the Department of Neurology (H.A.-H., H.A., T.H.), Aarhus University Hospital, Denmark; Department of Neurology (A.Y.D., B.v.d.B., C.V., J.R., S.E.L., S. Arends, L.W.G.L., K.K., B.C.J.), Erasmus MC, University Medical Centre Rotterdam, the Netherlands; Department of Neurology (A.M.S.), University of Michigan School of Medicine, Ann Arbor; Department of Neurology (S.A.Z.), University of Pittsburgh Medical Center, PA; Department of Neurology (H.J.W., A.D.), College of Medical, Veterinary and Life Sciences, University of Glasgow, United Kingdom; Department of Neurology (D.R.C.), Johns Hopkins University School of Medicine, Baltimore, MD; Department of Neurology (K.C.G.), St. Elizabeth's Medical Centre, Tufts University, School of Medicine, Boston, MA; Laboratory of Gut-Brain Signaling (Z.I.); Laboratory Sciences and Services Division (LSSD) (Z.I.), icddr,b; National Institute of Neurosciences and Hospital (Q.D.M.), Dhaka, Bangladesh; Department of Neurology (S.H.S.), Odense University Hospital and University of Southern Denmark; Department of Neurology (S. Kusunoki), Kindai University Faculty of Medicine, Osaka-Sayama City, Japan; Department of Neurology (C.C.), Neuromuscular Unit, Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Division of Neurology (K.B.), Department of Medicine, Groote Schuur Hospital, University of Cape Town, South Africa; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, United Kingdom; Department of Neurology (B.v.d.B., H.K.), Franciscus Gasthuis & Vlietland (location: Vlietland Hospital), Schiedam; Department of Neurology (S. Arends, P.W.W.), Haga Hospital, Den Haag; Department of Neurology (L.W.G.L., L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (S. Kuwabara), Chiba University, Chuo-ku, Japan; Department of Neurology (P.V.d.B.), Neuromuscular Reference Centre, University Hospital Saint-Luc, University of Louvain, Brussels, Belgium; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Dysimmune Neuropathies Unit (G.A.M.), Department of Systems Medicine, Tor Vergata University Hospital, Rome, Italy; Department of Medicine (N.S.), University of Malaya, Kuala Lumpur, Malaysia; Department of Neurology (G.G.), University Hospital of Modena, Italy; Department of Clinical Neurophysiology (Y.P.), Reference Centre for NMD, CHU Nantes, Nantes, France; Department of Neurology (J.B.), Saarland University Medical School, Homburg (previous hospital), and MVZ Pfalzklinikum (J.B.), Kusel, Germany (current hospital); Department of Neurology (K.K., R.P.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (C.M.), Hospital Británico, Buenos Aires, Argentina; Department of Neurology (M.J.S.T.), Hospital Marques de Valdecilla, Santander; Department of Neurology (L.Q., L.M.-A.), Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, CIBERER and ERN-NMD, Spain; Department of Neurology (Y.W.), Affiliated Hospital of Jining Medical University, Shandong Province, China; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Research Hospital, Milan University, Italy; Nuffield Department of Clinical Neurosciences (S.R.), University of Oxford and Oxford University Hospitals NHS Foundation Trust, United Kingdom; Department of Neurosciences, Ophthalmology, Rehabilitation, Genetics and Maternal Sciences (A.S.), University of Genova, and IRCCS San Martino Hospital (A.S.), Genova, Italy; Department of Neurology (J.P.), Hospital Clínico de Santiago, Travesia Choupana, Santiago de Compostela (A Coruña), Spain; Department of Neurology (F.H.V.), Franciscus Gasthuis & Vlietland (location: Franciscus Gasthuis), Rotterdam, the Netherlands; Department of Neurology (W.W., N.K.), University of Vermont Medical Centre, Burlington; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (V.G., B.S.), Montefiore Medical Center, Bronx, NY; Department of Neurology (G.C.), University Milano-Bicocca, Monza, Italy; Department of Neurology (G.G.-G.), Hospital Universitario Infanta Sofía, San Sebastián de los Reyes, Spain; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, FLENI, Buenos Aires, Argentina; Department of Neurology (H.D.K.), University Health Network, University of Toronto, Ontario, Canada; Department of Neurology (E.D.), University Hospital of Larissa, Greece; Department of Neurology (S. Attarian), Reference Centre for NMD, CHU Timone ERN NMD, Marseille, France; Department of Neurology (A.J.v.d.K., F.E.), Amsterdam University Medical Centre, University of Amsterdam, Neuroscience Institute; Department of Neurology (J.P.A.S.), Maasstad Hospital, Rotterdam; Department of Neurology (H.J.G.), Reinier de Graaf Hospital, Reinier de Graafweg, Delft, the Netherlands; Department of Neurology (R.D.M.H.), King's College Hospital, Denmark Hill, London; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, United Kingdom; Department of Neurology (K.A.S.), University of Texas Health Science Centre at Houston; Department of Biology (N.K., S. Karafiath), Utah Valley University, Orem; Department of Neurology (M.V.), Lahey Hospital and Medical Center, Tufts University School of Medicine, Burlington, MA; Department of Neurology, Mental Health and Sensory Organs (NESMOS) (G.A.), Faculty of Medicine and Psychology, University of Rome 'Sapienza,' Sant' Andrea Hospital, Italy; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Alberta, Canada; Department of Neurology (C.F.), Maastricht University Medical Centre, the Netherlands; Department of Neurology (M.B.), Leeds Teaching Hospitals; Department of Neurology (R.C.R.), Addenbrooke's Hospital, Cambridge, United Kingdom; Department of Neurology (N.J.S.), University at Buffalo Jacobs School of Medicine and Biomedical Sciences, NY; Department of Neurology (R.F.), Scientific Institute San Raffaele, Milano, Italy; Department of Neurology (G.W.v.D.), Canisius Wilhelmina Hospital, Nijmegen; Department of Neurology (M.P.J.G.), Jeroen Bosch Hospital, 's-Hertogenbosch; Department of Neurology (J.V.), Leiden University Medical Centre; and Department of Immunology (B.C.J.), Erasmus MC, University Medical Centre Rotterdam, the Netherlands.; Luijten LWG; From the Department of Neurology (H.A.-H., H.A., T.H.), Aarhus University Hospital, Denmark; Department of Neurology (A.Y.D., B.v.d.B., C.V., J.R., S.E.L., S. Arends, L.W.G.L., K.K., B.C.J.), Erasmus MC, University Medical Centre Rotterdam, the Netherlands; Department of Neurology (A.M.S.), University of Michigan School of Medicine, Ann Arbor; Department of Neurology (S.A.Z.), University of Pittsburgh Medical Center, PA; Department of Neurology (H.J.W., A.D.), College of Medical, Veterinary and Life Sciences, University of Glasgow, United Kingdom; Department of Neurology (D.R.C.), Johns Hopkins University School of Medicine, Baltimore, MD; Department of Neurology (K.C.G.), St. Elizabeth's Medical Centre, Tufts University, School of Medicine, Boston, MA; Laboratory of Gut-Brain Signaling (Z.I.); Laboratory Sciences and Services Division (LSSD) (Z.I.), icddr,b; National Institute of Neurosciences and Hospital (Q.D.M.), Dhaka, Bangladesh; Department of Neurology (S.H.S.), Odense University Hospital and University of Southern Denmark; Department of Neurology (S. Kusunoki), Kindai University Faculty of Medicine, Osaka-Sayama City, Japan; Department of Neurology (C.C.), Neuromuscular Unit, Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Division of Neurology (K.B.), Department of Medicine, Groote Schuur Hospital, University of Cape Town, South Africa; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, United Kingdom; Department of Neurology (B.v.d.B., H.K.), Franciscus Gasthuis & Vlietland (location: Vlietland Hospital), Schiedam; Department of Neurology (S. Arends, P.W.W.), Haga Hospital, Den Haag; Department of Neurology (L.W.G.L., L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (S. Kuwabara), Chiba University, Chuo-ku, Japan; Department of Neurology (P.V.d.B.), Neuromuscular Reference Centre, University Hospital Saint-Luc, University of Louvain, Brussels, Belgium; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Dysimmune Neuropathies Unit (G.A.M.), Department of Systems Medicine, Tor Vergata University Hospital, Rome, Italy; Department of Medicine (N.S.), University of Malaya, Kuala Lumpur, Malaysia; Department of Neurology (G.G.), University Hospital of Modena, Italy; Department of Clinical Neurophysiology (Y.P.), Reference Centre for NMD, CHU Nantes, Nantes, France; Department of Neurology (J.B.), Saarland University Medical School, Homburg (previous hospital), and MVZ Pfalzklinikum (J.B.), Kusel, Germany (current hospital); Department of Neurology (K.K., R.P.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (C.M.), Hospital Británico, Buenos Aires, Argentina; Department of Neurology (M.J.S.T.), Hospital Marques de Valdecilla, Santander; Department of Neurology (L.Q., L.M.-A.), Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, CIBERER and ERN-NMD, Spain; Department of Neurology (Y.W.), Affiliated Hospital of Jining Medical University, Shandong Province, China; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Research Hospital, Milan University, Italy; Nuffield Department of Clinical Neurosciences (S.R.), University of Oxford and Oxford University Hospitals NHS Foundation Trust, United Kingdom; Department of Neurosciences, Ophthalmology, Rehabilitation, Genetics and Maternal Sciences (A.S.), University of Genova, and IRCCS San Martino Hospital (A.S.), Genova, Italy; Department of Neurology (J.P.), Hospital Clínico de Santiago, Travesia Choupana, Santiago de Compostela (A Coruña), Spain; Department of Neurology (F.H.V.), Franciscus Gasthuis & Vlietland (location: Franciscus Gasthuis), Rotterdam, the Netherlands; Department of Neurology (W.W., N.K.), University of Vermont Medical Centre, Burlington; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (V.G., B.S.), Montefiore Medical Center, Bronx, NY; Department of Neurology (G.C.), University Milano-Bicocca, Monza, Italy; Department of Neurology (G.G.-G.), Hospital Universitario Infanta Sofía, San Sebastián de los Reyes, Spain; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, FLENI, Buenos Aires, Argentina; Department of Neurology (H.D.K.), University Health Network, University of Toronto, Ontario, Canada; Department of Neurology (E.D.), University Hospital of Larissa, Greece; Department of Neurology (S. Attarian), Reference Centre for NMD, CHU Timone ERN NMD, Marseille, France; Department of Neurology (A.J.v.d.K., F.E.), Amsterdam University Medical Centre, University of Amsterdam, Neuroscience Institute; Department of Neurology (J.P.A.S.), Maasstad Hospital, Rotterdam; Department of Neurology (H.J.G.), Reinier de Graaf Hospital, Reinier de Graafweg, Delft, the Netherlands; Department of Neurology (R.D.M.H.), King's College Hospital, Denmark Hill, London; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, United Kingdom; Department of Neurology (K.A.S.), University of Texas Health Science Centre at Houston; Department of Biology (N.K., S. Karafiath), Utah Valley University, Orem; Department of Neurology (M.V.), Lahey Hospital and Medical Center, Tufts University School of Medicine, Burlington, MA; Department of Neurology, Mental Health and Sensory Organs (NESMOS) (G.A.), Faculty of Medicine and Psychology, University of Rome 'Sapienza,' Sant' Andrea Hospital, Italy; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Alberta, Canada; Department of Neurology (C.F.), Maastricht University Medical Centre, the Netherlands; Department of Neurology (M.B.), Leeds Teaching Hospitals; Department of Neurology (R.C.R.), Addenbrooke's Hospital, Cambridge, United Kingdom; Department of Neurology (N.J.S.), University at Buffalo Jacobs School of Medicine and Biomedical Sciences, NY; Department of Neurology (R.F.), Scientific Institute San Raffaele, Milano, Italy; Department of Neurology (G.W.v.D.), Canisius Wilhelmina Hospital, Nijmegen; Department of Neurology (M.P.J.G.), Jeroen Bosch Hospital, 's-Hertogenbosch; Department of Neurology (J.V.), Leiden University Medical Centre; and Department of Immunology (B.C.J.), Erasmus MC, University Medical Centre Rotterdam, the Netherlands.; Benedetti L; From the Department of Neurology (H.A.-H., H.A., T.H.), Aarhus University Hospital, Denmark; Department of Neurology (A.Y.D., B.v.d.B., C.V., J.R., S.E.L., S. Arends, L.W.G.L., K.K., B.C.J.), Erasmus MC, University Medical Centre Rotterdam, the Netherlands; Department of Neurology (A.M.S.), University of Michigan School of Medicine, Ann Arbor; Department of Neurology (S.A.Z.), University of Pittsburgh Medical Center, PA; Department of Neurology (H.J.W., A.D.), College of Medical, Veterinary and Life Sciences, University of Glasgow, United Kingdom; Department of Neurology (D.R.C.), Johns Hopkins University School of Medicine, Baltimore, MD; Department of Neurology (K.C.G.), St. Elizabeth's Medical Centre, Tufts University, School of Medicine, Boston, MA; Laboratory of Gut-Brain Signaling (Z.I.); Laboratory Sciences and Services Division (LSSD) (Z.I.), icddr,b; National Institute of Neurosciences and Hospital (Q.D.M.), Dhaka, Bangladesh; Department of Neurology (S.H.S.), Odense University Hospital and University of Southern Denmark; Department of Neurology (S. Kusunoki), Kindai University Faculty of Medicine, Osaka-Sayama City, Japan; Department of Neurology (C.C.), Neuromuscular Unit, Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Division of Neurology (K.B.), Department of Medicine, Groote Schuur Hospital, University of Cape Town, South Africa; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, United Kingdom; Department of Neurology (B.v.d.B., H.K.), Franciscus Gasthuis & Vlietland (location: Vlietland Hospital), Schiedam; Department of Neurology (S. Arends, P.W.W.), Haga Hospital, Den Haag; Department of Neurology (L.W.G.L., L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (S. Kuwabara), Chiba University, Chuo-ku, Japan; Department of Neurology (P.V.d.B.), Neuromuscular Reference Centre, University Hospital Saint-Luc, University of Louvain, Brussels, Belgium; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Dysimmune Neuropathies Unit (G.A.M.), Department of Systems Medicine, Tor Vergata University Hospital, Rome, Italy; Department of Medicine (N.S.), University of Malaya, Kuala Lumpur, Malaysia; Department of Neurology (G.G.), University Hospital of Modena, Italy; Department of Clinical Neurophysiology (Y.P.), Reference Centre for NMD, CHU Nantes, Nantes, France; Department of Neurology (J.B.), Saarland University Medical School, Homburg (previous hospital), and MVZ Pfalzklinikum (J.B.), Kusel, Germany (current hospital); Department of Neurology (K.K., R.P.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (C.M.), Hospital Británico, Buenos Aires, Argentina; Department of Neurology (M.J.S.T.), Hospital Marques de Valdecilla, Santander; Department of Neurology (L.Q., L.M.-A.), Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, CIBERER and ERN-NMD, Spain; Department of Neurology (Y.W.), Affiliated Hospital of Jining Medical University, Shandong Province, China; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Research Hospital, Milan University, Italy; Nuffield Department of Clinical Neurosciences (S.R.), University of Oxford and Oxford University Hospitals NHS Foundation Trust, United Kingdom; Department of Neurosciences, Ophthalmology, Rehabilitation, Genetics and Maternal Sciences (A.S.), University of Genova, and IRCCS San Martino Hospital (A.S.), Genova, Italy; Department of Neurology (J.P.), Hospital Clínico de Santiago, Travesia Choupana, Santiago de Compostela (A Coruña), Spain; Department of Neurology (F.H.V.), Franciscus Gasthuis & Vlietland (location: Franciscus Gasthuis), Rotterdam, the Netherlands; Department of Neurology (W.W., N.K.), University of Vermont Medical Centre, Burlington; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (V.G., B.S.), Montefiore Medical Center, Bronx, NY; Department of Neurology (G.C.), University Milano-Bicocca, Monza, Italy; Department of Neurology (G.G.-G.), Hospital Universitario Infanta Sofía, San Sebastián de los Reyes, Spain; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, FLENI, Buenos Aires, Argentina; Department of Neurology (H.D.K.), University Health Network, University of Toronto, Ontario, Canada; Department of Neurology (E.D.), University Hospital of Larissa, Greece; Department of Neurology (S. Attarian), Reference Centre for NMD, CHU Timone ERN NMD, Marseille, France; Department of Neurology (A.J.v.d.K., F.E.), Amsterdam University Medical Centre, University of Amsterdam, Neuroscience Institute; Department of Neurology (J.P.A.S.), Maasstad Hospital, Rotterdam; Department of Neurology (H.J.G.), Reinier de Graaf Hospital, Reinier de Graafweg, Delft, the Netherlands; Department of Neurology (R.D.M.H.), King's College Hospital, Denmark Hill, London; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, United Kingdom; Department of Neurology (K.A.S.), University of Texas Health Science Centre at Houston; Department of Biology (N.K., S. Karafiath), Utah Valley University, Orem; Department of Neurology (M.V.), Lahey Hospital and Medical Center, Tufts University School of Medicine, Burlington, MA; Department of Neurology, Mental Health and Sensory Organs (NESMOS) (G.A.), Faculty of Medicine and Psychology, University of Rome 'Sapienza,' Sant' Andrea Hospital, Italy; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Alberta, Canada; Department of Neurology (C.F.), Maastricht University Medical Centre, the Netherlands; Department of Neurology (M.B.), Leeds Teaching Hospitals; Department of Neurology (R.C.R.), Addenbrooke's Hospital, Cambridge, United Kingdom; Department of Neurology (N.J.S.), University at Buffalo Jacobs School of Medicine and Biomedical Sciences, NY; Department of Neurology (R.F.), Scientific Institute San Raffaele, Milano, Italy; Department of Neurology (G.W.v.D.), Canisius Wilhelmina Hospital, Nijmegen; Department of Neurology (M.P.J.G.), Jeroen Bosch Hospital, 's-Hertogenbosch; Department of Neurology (J.V.), Leiden University Medical Centre; and Department of Immunology (B.C.J.), Erasmus MC, University Medical Centre Rotterdam, the Netherlands.; Kuwabara S; From the Department of Neurology (H.A.-H., H.A., T.H.), Aarhus University Hospital, Denmark; Department of Neurology (A.Y.D., B.v.d.B., C.V., J.R., S.E.L., S. Arends, L.W.G.L., K.K., B.C.J.), Erasmus MC, University Medical Centre Rotterdam, the Netherlands; Department of Neurology (A.M.S.), University of Michigan School of Medicine, Ann Arbor; Department of Neurology (S.A.Z.), University of Pittsburgh Medical Center, PA; Department of Neurology (H.J.W., A.D.), College of Medical, Veterinary and Life Sciences, University of Glasgow, United Kingdom; Department of Neurology (D.R.C.), Johns Hopkins University School of Medicine, Baltimore, MD; Department of Neurology (K.C.G.), St. Elizabeth's Medical Centre, Tufts University, School of Medicine, Boston, MA; Laboratory of Gut-Brain Signaling (Z.I.); Laboratory Sciences and Services Division (LSSD) (Z.I.), icddr,b; National Institute of Neurosciences and Hospital (Q.D.M.), Dhaka, Bangladesh; Department of Neurology (S.H.S.), Odense University Hospital and University of Southern Denmark; Department of Neurology (S. Kusunoki), Kindai University Faculty of Medicine, Osaka-Sayama City, Japan; Department of Neurology (C.C.), Neuromuscular Unit, Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Division of Neurology (K.B.), Department of Medicine, Groote Schuur Hospital, University of Cape Town, South Africa; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, United Kingdom; Department of Neurology (B.v.d.B., H.K.), Franciscus Gasthuis & Vlietland (location: Vlietland Hospital), Schiedam; Department of Neurology (S. Arends, P.W.W.), Haga Hospital, Den Haag; Department of Neurology (L.W.G.L., L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (S. Kuwabara), Chiba University, Chuo-ku, Japan; Department of Neurology (P.V.d.B.), Neuromuscular Reference Centre, University Hospital Saint-Luc, University of Louvain, Brussels, Belgium; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Dysimmune Neuropathies Unit (G.A.M.), Department of Systems Medicine, Tor Vergata University Hospital, Rome, Italy; Department of Medicine (N.S.), University of Malaya, Kuala Lumpur, Malaysia; Department of Neurology (G.G.), University Hospital of Modena, Italy; Department of Clinical Neurophysiology (Y.P.), Reference Centre for NMD, CHU Nantes, Nantes, France; Department of Neurology (J.B.), Saarland University Medical School, Homburg (previous hospital), and MVZ Pfalzklinikum (J.B.), Kusel, Germany (current hospital); Department of Neurology (K.K., R.P.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (C.M.), Hospital Británico, Buenos Aires, Argentina; Department of Neurology (M.J.S.T.), Hospital Marques de Valdecilla, Santander; Department of Neurology (L.Q., L.M.-A.), Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, CIBERER and ERN-NMD, Spain; Department of Neurology (Y.W.), Affiliated Hospital of Jining Medical University, Shandong Province, China; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Research Hospital, Milan University, Italy; Nuffield Department of Clinical Neurosciences (S.R.), University of Oxford and Oxford University Hospitals NHS Foundation Trust, United Kingdom; Department of Neurosciences, Ophthalmology, Rehabilitation, Genetics and Maternal Sciences (A.S.), University of Genova, and IRCCS San Martino Hospital (A.S.), Genova, Italy; Department of Neurology (J.P.), Hospital Clínico de Santiago, Travesia Choupana, Santiago de Compostela (A Coruña), Spain; Department of Neurology (F.H.V.), Franciscus Gasthuis & Vlietland (location: Franciscus Gasthuis), Rotterdam, the Netherlands; Department of Neurology (W.W., N.K.), University of Vermont Medical Centre, Burlington; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (V.G., B.S.), Montefiore Medical Center, Bronx, NY; Department of Neurology (G.C.), University Milano-Bicocca, Monza, Italy; Department of Neurology (G.G.-G.), Hospital Universitario Infanta Sofía, San Sebastián de los Reyes, Spain; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, FLENI, Buenos Aires, Argentina; Department of Neurology (H.D.K.), University Health Network, University of Toronto, Ontario, Canada; Department of Neurology (E.D.), University Hospital of Larissa, Greece; Department of Neurology (S. Attarian), Reference Centre for NMD, CHU Timone ERN NMD, Marseille, France; Department of Neurology (A.J.v.d.K., F.E.), Amsterdam University Medical Centre, University of Amsterdam, Neuroscience Institute; Department of Neurology (J.P.A.S.), Maasstad Hospital, Rotterdam; Department of Neurology (H.J.G.), Reinier de Graaf Hospital, Reinier de Graafweg, Delft, the Netherlands; Department of Neurology (R.D.M.H.), King's College Hospital, Denmark Hill, London; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, United Kingdom; Department of Neurology (K.A.S.), University of Texas Health Science Centre at Houston; Department of Biology (N.K., S. Karafiath), Utah Valley University, Orem; Department of Neurology (M.V.), Lahey Hospital and Medical Center, Tufts University School of Medicine, Burlington, MA; Department of Neurology, Mental Health and Sensory Organs (NESMOS) (G.A.), Faculty of Medicine and Psychology, University of Rome 'Sapienza,' Sant' Andrea Hospital, Italy; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Alberta, Canada; Department of Neurology (C.F.), Maastricht University Medical Centre, the Netherlands; Department of Neurology (M.B.), Leeds Teaching Hospitals; Department of Neurology (R.C.R.), Addenbrooke's Hospital, Cambridge, United Kingdom; Department of Neurology (N.J.S.), University at Buffalo Jacobs School of Medicine and Biomedical Sciences, NY; Department of Neurology (R.F.), Scientific Institute San Raffaele, Milano, Italy; Department of Neurology (G.W.v.D.), Canisius Wilhelmina Hospital, Nijmegen; Department of Neurology (M.P.J.G.), Jeroen Bosch Hospital, 's-Hertogenbosch; Department of Neurology (J.V.), Leiden University Medical Centre; and Department of Immunology (B.C.J.), Erasmus MC, University Medical Centre Rotterdam, the Netherlands.; Van den Bergh P; From the Department of Neurology (H.A.-H., H.A., T.H.), Aarhus University Hospital, Denmark; Department of Neurology (A.Y.D., B.v.d.B., C.V., J.R., S.E.L., S. Arends, L.W.G.L., K.K., B.C.J.), Erasmus MC, University Medical Centre Rotterdam, the Netherlands; Department of Neurology (A.M.S.), University of Michigan School of Medicine, Ann Arbor; Department of Neurology (S.A.Z.), University of Pittsburgh Medical Center, PA; Department of Neurology (H.J.W., A.D.), College of Medical, Veterinary and Life Sciences, University of Glasgow, United Kingdom; Department of Neurology (D.R.C.), Johns Hopkins University School of Medicine, Baltimore, MD; Department of Neurology (K.C.G.), St. Elizabeth's Medical Centre, Tufts University, School of Medicine, Boston, MA; Laboratory of Gut-Brain Signaling (Z.I.); Laboratory Sciences and Services Division (LSSD) (Z.I.), icddr,b; National Institute of Neurosciences and Hospital (Q.D.M.), Dhaka, Bangladesh; Department of Neurology (S.H.S.), Odense University Hospital and University of Southern Denmark; Department of Neurology (S. Kusunoki), Kindai University Faculty of Medicine, Osaka-Sayama City, Japan; Department of Neurology (C.C.), Neuromuscular Unit, Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Division of Neurology (K.B.), Department of Medicine, Groote Schuur Hospital, University of Cape Town, South Africa; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, United Kingdom; Department of Neurology (B.v.d.B., H.K.), Franciscus Gasthuis & Vlietland (location: Vlietland Hospital), Schiedam; Department of Neurology (S. Arends, P.W.W.), Haga Hospital, Den Haag; Department of Neurology (L.W.G.L., L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (S. Kuwabara), Chiba University, Chuo-ku, Japan; Department of Neurology (P.V.d.B.), Neuromuscular Reference Centre, University Hospital Saint-Luc, University of Louvain, Brussels, Belgium; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Dysimmune Neuropathies Unit (G.A.M.), Department of Systems Medicine, Tor Vergata University Hospital, Rome, Italy; Department of Medicine (N.S.), University of Malaya, Kuala Lumpur, Malaysia; Department of Neurology (G.G.), University Hospital of Modena, Italy; Department of Clinical Neurophysiology (Y.P.), Reference Centre for NMD, CHU Nantes, Nantes, France; Department of Neurology (J.B.), Saarland University Medical School, Homburg (previous hospital), and MVZ Pfalzklinikum (J.B.), Kusel, Germany (current hospital); Department of Neurology (K.K., R.P.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (C.M.), Hospital Británico, Buenos Aires, Argentina; Department of Neurology (M.J.S.T.), Hospital Marques de Valdecilla, Santander; Department of Neurology (L.Q., L.M.-A.), Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, CIBERER and ERN-NMD, Spain; Department of Neurology (Y.W.), Affiliated Hospital of Jining Medical University, Shandong Province, China; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Research Hospital, Milan University, Italy; Nuffield Department of Clinical Neurosciences (S.R.), University of Oxford and Oxford University Hospitals NHS Foundation Trust, United Kingdom; Department of Neurosciences, Ophthalmology, Rehabilitation, Genetics and Maternal Sciences (A.S.), University of Genova, and IRCCS San Martino Hospital (A.S.), Genova, Italy; Department of Neurology (J.P.), Hospital Clínico de Santiago, Travesia Choupana, Santiago de Compostela (A Coruña), Spain; Department of Neurology (F.H.V.), Franciscus Gasthuis & Vlietland (location: Franciscus Gasthuis), Rotterdam, the Netherlands; Department of Neurology (W.W., N.K.), University of Vermont Medical Centre, Burlington; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (V.G., B.S.), Montefiore Medical Center, Bronx, NY; Department of Neurology (G.C.), University Milano-Bicocca, Monza, Italy; Department of Neurology (G.G.-G.), Hospital Universitario Infanta Sofía, San Sebastián de los Reyes, Spain; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, FLENI, Buenos Aires, Argentina; Department of Neurology (H.D.K.), University Health Network, University of Toronto, Ontario, Canada; Department of Neurology (E.D.), University Hospital of Larissa, Greece; Department of Neurology (S. Attarian), Reference Centre for NMD, CHU Timone ERN NMD, Marseille, France; Department of Neurology (A.J.v.d.K., F.E.), Amsterdam University Medical Centre, University of Amsterdam, Neuroscience Institute; Department of Neurology (J.P.A.S.), Maasstad Hospital, Rotterdam; Department of Neurology (H.J.G.), Reinier de Graaf Hospital, Reinier de Graafweg, Delft, the Netherlands; Department of Neurology (R.D.M.H.), King's College Hospital, Denmark Hill, London; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, United Kingdom; Department of Neurology (K.A.S.), University of Texas Health Science Centre at Houston; Department of Biology (N.K., S. Karafiath), Utah Valley University, Orem; Department of Neurology (M.V.), Lahey Hospital and Medical Center, Tufts University School of Medicine, Burlington, MA; Department of Neurology, Mental Health and Sensory Organs (NESMOS) (G.A.), Faculty of Medicine and Psychology, University of Rome 'Sapienza,' Sant' Andrea Hospital, Italy; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Alberta, Canada; Department of Neurology (C.F.), Maastricht University Medical Centre, the Netherlands; Department of Neurology (M.B.), Leeds Teaching Hospitals; Department of Neurology (R.C.R.), Addenbrooke's Hospital, Cambridge, United Kingdom; Department of Neurology (N.J.S.), University at Buffalo Jacobs School of Medicine and Biomedical Sciences, NY; Department of Neurology (R.F.), Scientific Institute San Raffaele, Milano, Italy; Department of Neurology (G.W.v.D.), Canisius Wilhelmina Hospital, Nijmegen; Department of Neurology (M.P.J.G.), Jeroen Bosch Hospital, 's-Hertogenbosch; Department of Neurology (J.V.), Leiden University Medical Centre; and Department of Immunology (B.C.J.), Erasmus MC, University Medical Centre Rotterdam, the Netherlands.; Monges S; From the Department of Neurology (H.A.-H., H.A., T.H.), Aarhus University Hospital, Denmark; Department of Neurology (A.Y.D., B.v.d.B., C.V., J.R., S.E.L., S. Arends, L.W.G.L., K.K., B.C.J.), Erasmus MC, University Medical Centre Rotterdam, the Netherlands; Department of Neurology (A.M.S.), University of Michigan School of Medicine, Ann Arbor; Department of Neurology (S.A.Z.), University of Pittsburgh Medical Center, PA; Department of Neurology (H.J.W., A.D.), College of Medical, Veterinary and Life Sciences, University of Glasgow, United Kingdom; Department of Neurology (D.R.C.), Johns Hopkins University School of Medicine, Baltimore, MD; Department of Neurology (K.C.G.), St. Elizabeth's Medical Centre, Tufts University, School of Medicine, Boston, MA; Laboratory of Gut-Brain Signaling (Z.I.); Laboratory Sciences and Services Division (LSSD) (Z.I.), icddr,b; National Institute of Neurosciences and Hospital (Q.D.M.), Dhaka, Bangladesh; Department of Neurology (S.H.S.), Odense University Hospital and University of Southern Denmark; Department of Neurology (S. Kusunoki), Kindai University Faculty of Medicine, Osaka-Sayama City, Japan; Department of Neurology (C.C.), Neuromuscular Unit, Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Division of Neurology (K.B.), Department of Medicine, Groote Schuur Hospital, University of Cape Town, South Africa; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, United Kingdom; Department of Neurology (B.v.d.B., H.K.), Franciscus Gasthuis & Vlietland (location: Vlietland Hospital), Schiedam; Department of Neurology (S. Arends, P.W.W.), Haga Hospital, Den Haag; Department of Neurology (L.W.G.L., L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (S. Kuwabara), Chiba University, Chuo-ku, Japan; Department of Neurology (P.V.d.B.), Neuromuscular Reference Centre, University Hospital Saint-Luc, University of Louvain, Brussels, Belgium; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Dysimmune Neuropathies Unit (G.A.M.), Department of Systems Medicine, Tor Vergata University Hospital, Rome, Italy; Department of Medicine (N.S.), University of Malaya, Kuala Lumpur, Malaysia; Department of Neurology (G.G.), University Hospital of Modena, Italy; Department of Clinical Neurophysiology (Y.P.), Reference Centre for NMD, CHU Nantes, Nantes, France; Department of Neurology (J.B.), Saarland University Medical School, Homburg (previous hospital), and MVZ Pfalzklinikum (J.B.), Kusel, Germany (current hospital); Department of Neurology (K.K., R.P.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (C.M.), Hospital Británico, Buenos Aires, Argentina; Department of Neurology (M.J.S.T.), Hospital Marques de Valdecilla, Santander; Department of Neurology (L.Q., L.M.-A.), Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, CIBERER and ERN-NMD, Spain; Department of Neurology (Y.W.), Affiliated Hospital of Jining Medical University, Shandong Province, China; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Research Hospital, Milan University, Italy; Nuffield Department of Clinical Neurosciences (S.R.), University of Oxford and Oxford University Hospitals NHS Foundation Trust, United Kingdom; Department of Neurosciences, Ophthalmology, Rehabilitation, Genetics and Maternal Sciences (A.S.), University of Genova, and IRCCS San Martino Hospital (A.S.), Genova, Italy; Department of Neurology (J.P.), Hospital Clínico de Santiago, Travesia Choupana, Santiago de Compostela (A Coruña), Spain; Department of Neurology (F.H.V.), Franciscus Gasthuis & Vlietland (location: Franciscus Gasthuis), Rotterdam, the Netherlands; Department of Neurology (W.W., N.K.), University of Vermont Medical Centre, Burlington; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (V.G., B.S.), Montefiore Medical Center, Bronx, NY; Department of Neurology (G.C.), University Milano-Bicocca, Monza, Italy; Department of Neurology (G.G.-G.), Hospital Universitario Infanta Sofía, San Sebastián de los Reyes, Spain; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, FLENI, Buenos Aires, Argentina; Department of Neurology (H.D.K.), University Health Network, University of Toronto, Ontario, Canada; Department of Neurology (E.D.), University Hospital of Larissa, Greece; Department of Neurology (S. Attarian), Reference Centre for NMD, CHU Timone ERN NMD, Marseille, France; Department of Neurology (A.J.v.d.K., F.E.), Amsterdam University Medical Centre, University of Amsterdam, Neuroscience Institute; Department of Neurology (J.P.A.S.), Maasstad Hospital, Rotterdam; Department of Neurology (H.J.G.), Reinier de Graaf Hospital, Reinier de Graafweg, Delft, the Netherlands; Department of Neurology (R.D.M.H.), King's College Hospital, Denmark Hill, London; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, United Kingdom; Department of Neurology (K.A.S.), University of Texas Health Science Centre at Houston; Department of Biology (N.K., S. Karafiath), Utah Valley University, Orem; Department of Neurology (M.V.), Lahey Hospital and Medical Center, Tufts University School of Medicine, Burlington, MA; Department of Neurology, Mental Health and Sensory Organs (NESMOS) (G.A.), Faculty of Medicine and Psychology, University of Rome 'Sapienza,' Sant' Andrea Hospital, Italy; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Alberta, Canada; Department of Neurology (C.F.), Maastricht University Medical Centre, the Netherlands; Department of Neurology (M.B.), Leeds Teaching Hospitals; Department of Neurology (R.C.R.), Addenbrooke's Hospital, Cambridge, United Kingdom; Department of Neurology (N.J.S.), University at Buffalo Jacobs School of Medicine and Biomedical Sciences, NY; Department of Neurology (R.F.), Scientific Institute San Raffaele, Milano, Italy; Department of Neurology (G.W.v.D.), Canisius Wilhelmina Hospital, Nijmegen; Department of Neurology (M.P.J.G.), Jeroen Bosch Hospital, 's-Hertogenbosch; Department of Neurology (J.V.), Leiden University Medical Centre; and Department of Immunology (B.C.J.), Erasmus MC, University Medical Centre Rotterdam, the Netherlands.; Marfia GA; From the Department of Neurology (H.A.-H., H.A., T.H.), Aarhus University Hospital, Denmark; Department of Neurology (A.Y.D., B.v.d.B., C.V., J.R., S.E.L., S. Arends, L.W.G.L., K.K., B.C.J.), Erasmus MC, University Medical Centre Rotterdam, the Netherlands; Department of Neurology (A.M.S.), University of Michigan School of Medicine, Ann Arbor; Department of Neurology (S.A.Z.), University of Pittsburgh Medical Center, PA; Department of Neurology (H.J.W., A.D.), College of Medical, Veterinary and Life Sciences, University of Glasgow, United Kingdom; Department of Neurology (D.R.C.), Johns Hopkins University School of Medicine, Baltimore, MD; Department of Neurology (K.C.G.), St. Elizabeth's Medical Centre, Tufts University, School of Medicine, Boston, MA; Laboratory of Gut-Brain Signaling (Z.I.); Laboratory Sciences and Services Division (LSSD) (Z.I.), icddr,b; National Institute of Neurosciences and Hospital (Q.D.M.), Dhaka, Bangladesh; Department of Neurology (S.H.S.), Odense University Hospital and University of Southern Denmark; Department of Neurology (S. Kusunoki), Kindai University Faculty of Medicine, Osaka-Sayama City, Japan; Department of Neurology (C.C.), Neuromuscular Unit, Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Division of Neurology (K.B.), Department of Medicine, Groote Schuur Hospital, University of Cape Town, South Africa; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, United Kingdom; Department of Neurology (B.v.d.B., H.K.), Franciscus Gasthuis & Vlietland (location: Vlietland Hospital), Schiedam; Department of Neurology (S. Arends, P.W.W.), Haga Hospital, Den Haag; Department of Neurology (L.W.G.L., L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (S. Kuwabara), Chiba University, Chuo-ku, Japan; Department of Neurology (P.V.d.B.), Neuromuscular Reference Centre, University Hospital Saint-Luc, University of Louvain, Brussels, Belgium; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Dysimmune Neuropathies Unit (G.A.M.), Department of Systems Medicine, Tor Vergata University Hospital, Rome, Italy; Department of Medicine (N.S.), University of Malaya, Kuala Lumpur, Malaysia; Department of Neurology (G.G.), University Hospital of Modena, Italy; Department of Clinical Neurophysiology (Y.P.), Reference Centre for NMD, CHU Nantes, Nantes, France; Department of Neurology (J.B.), Saarland University Medical School, Homburg (previous hospital), and MVZ Pfalzklinikum (J.B.), Kusel, Germany (current hospital); Department of Neurology (K.K., R.P.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (C.M.), Hospital Británico, Buenos Aires, Argentina; Department of Neurology (M.J.S.T.), Hospital Marques de Valdecilla, Santander; Department of Neurology (L.Q., L.M.-A.), Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, CIBERER and ERN-NMD, Spain; Department of Neurology (Y.W.), Affiliated Hospital of Jining Medical University, Shandong Province, China; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Research Hospital, Milan University, Italy; Nuffield Department of Clinical Neurosciences (S.R.), University of Oxford and Oxford University Hospitals NHS Foundation Trust, United Kingdom; Department of Neurosciences, Ophthalmology, Rehabilitation, Genetics and Maternal Sciences (A.S.), University of Genova, and IRCCS San Martino Hospital (A.S.), Genova, Italy; Department of Neurology (J.P.), Hospital Clínico de Santiago, Travesia Choupana, Santiago de Compostela (A Coruña), Spain; Department of Neurology (F.H.V.), Franciscus Gasthuis & Vlietland (location: Franciscus Gasthuis), Rotterdam, the Netherlands; Department of Neurology (W.W., N.K.), University of Vermont Medical Centre, Burlington; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (V.G., B.S.), Montefiore Medical Center, Bronx, NY; Department of Neurology (G.C.), University Milano-Bicocca, Monza, Italy; Department of Neurology (G.G.-G.), Hospital Universitario Infanta Sofía, San Sebastián de los Reyes, Spain; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, FLENI, Buenos Aires, Argentina; Department of Neurology (H.D.K.), University Health Network, University of Toronto, Ontario, Canada; Department of Neurology (E.D.), University Hospital of Larissa, Greece; Department of Neurology (S. Attarian), Reference Centre for NMD, CHU Timone ERN NMD, Marseille, France; Department of Neurology (A.J.v.d.K., F.E.), Amsterdam University Medical Centre, University of Amsterdam, Neuroscience Institute; Department of Neurology (J.P.A.S.), Maasstad Hospital, Rotterdam; Department of Neurology (H.J.G.), Reinier de Graaf Hospital, Reinier de Graafweg, Delft, the Netherlands; Department of Neurology (R.D.M.H.), King's College Hospital, Denmark Hill, London; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, United Kingdom; Department of Neurology (K.A.S.), University of Texas Health Science Centre at Houston; Department of Biology (N.K., S. Karafiath), Utah Valley University, Orem; Department of Neurology (M.V.), Lahey Hospital and Medical Center, Tufts University School of Medicine, Burlington, MA; Department of Neurology, Mental Health and Sensory Organs (NESMOS) (G.A.), Faculty of Medicine and Psychology, University of Rome 'Sapienza,' Sant' Andrea Hospital, Italy; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Alberta, Canada; Department of Neurology (C.F.), Maastricht University Medical Centre, the Netherlands; Department of Neurology (M.B.), Leeds Teaching Hospitals; Department of Neurology (R.C.R.), Addenbrooke's Hospital, Cambridge, United Kingdom; Department of Neurology (N.J.S.), University at Buffalo Jacobs School of Medicine and Biomedical Sciences, NY; Department of Neurology (R.F.), Scientific Institute San Raffaele, Milano, Italy; Department of Neurology (G.W.v.D.), Canisius Wilhelmina Hospital, Nijmegen; Department of Neurology (M.P.J.G.), Jeroen Bosch Hospital, 's-Hertogenbosch; Department of Neurology (J.V.), Leiden University Medical Centre; and Department of Immunology (B.C.J.), Erasmus MC, University Medical Centre Rotterdam, the Netherlands.; Shahrizaila N; From the Department of Neurology (H.A.-H., H.A., T.H.), Aarhus University Hospital, Denmark; Department of Neurology (A.Y.D., B.v.d.B., C.V., J.R., S.E.L., S. Arends, L.W.G.L., K.K., B.C.J.), Erasmus MC, University Medical Centre Rotterdam, the Netherlands; Department of Neurology (A.M.S.), University of Michigan School of Medicine, Ann Arbor; Department of Neurology (S.A.Z.), University of Pittsburgh Medical Center, PA; Department of Neurology (H.J.W., A.D.), College of Medical, Veterinary and Life Sciences, University of Glasgow, United Kingdom; Department of Neurology (D.R.C.), Johns Hopkins University School of Medicine, Baltimore, MD; Department of Neurology (K.C.G.), St. Elizabeth's Medical Centre, Tufts University, School of Medicine, Boston, MA; Laboratory of Gut-Brain Signaling (Z.I.); Laboratory Sciences and Services Division (LSSD) (Z.I.), icddr,b; National Institute of Neurosciences and Hospital (Q.D.M.), Dhaka, Bangladesh; Department of Neurology (S.H.S.), Odense University Hospital and University of Southern Denmark; Department of Neurology (S. Kusunoki), Kindai University Faculty of Medicine, Osaka-Sayama City, Japan; Department of Neurology (C.C.), Neuromuscular Unit, Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Division of Neurology (K.B.), Department of Medicine, Groote Schuur Hospital, University of Cape Town, South Africa; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, United Kingdom; Department of Neurology (B.v.d.B., H.K.), Franciscus Gasthuis & Vlietland (location: Vlietland Hospital), Schiedam; Department of Neurology (S. Arends, P.W.W.), Haga Hospital, Den Haag; Department of Neurology (L.W.G.L., L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (S. Kuwabara), Chiba University, Chuo-ku, Japan; Department of Neurology (P.V.d.B.), Neuromuscular Reference Centre, University Hospital Saint-Luc, University of Louvain, Brussels, Belgium; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Dysimmune Neuropathies Unit (G.A.M.), Department of Systems Medicine, Tor Vergata University Hospital, Rome, Italy; Department of Medicine (N.S.), University of Malaya, Kuala Lumpur, Malaysia; Department of Neurology (G.G.), University Hospital of Modena, Italy; Department of Clinical Neurophysiology (Y.P.), Reference Centre for NMD, CHU Nantes, Nantes, France; Department of Neurology (J.B.), Saarland University Medical School, Homburg (previous hospital), and MVZ Pfalzklinikum (J.B.), Kusel, Germany (current hospital); Department of Neurology (K.K., R.P.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (C.M.), Hospital Británico, Buenos Aires, Argentina; Department of Neurology (M.J.S.T.), Hospital Marques de Valdecilla, Santander; Department of Neurology (L.Q., L.M.-A.), Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, CIBERER and ERN-NMD, Spain; Department of Neurology (Y.W.), Affiliated Hospital of Jining Medical University, Shandong Province, China; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Research Hospital, Milan University, Italy; Nuffield Department of Clinical Neurosciences (S.R.), University of Oxford and Oxford University Hospitals NHS Foundation Trust, United Kingdom; Department of Neurosciences, Ophthalmology, Rehabilitation, Genetics and Maternal Sciences (A.S.), University of Genova, and IRCCS San Martino Hospital (A.S.), Genova, Italy; Department of Neurology (J.P.), Hospital Clínico de Santiago, Travesia Choupana, Santiago de Compostela (A Coruña), Spain; Department of Neurology (F.H.V.), Franciscus Gasthuis & Vlietland (location: Franciscus Gasthuis), Rotterdam, the Netherlands; Department of Neurology (W.W., N.K.), University of Vermont Medical Centre, Burlington; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (V.G., B.S.), Montefiore Medical Center, Bronx, NY; Department of Neurology (G.C.), University Milano-Bicocca, Monza, Italy; Department of Neurology (G.G.-G.), Hospital Universitario Infanta Sofía, San Sebastián de los Reyes, Spain; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, FLENI, Buenos Aires, Argentina; Department of Neurology (H.D.K.), University Health Network, University of Toronto, Ontario, Canada; Department of Neurology (E.D.), University Hospital of Larissa, Greece; Department of Neurology (S. Attarian), Reference Centre for NMD, CHU Timone ERN NMD, Marseille, France; Department of Neurology (A.J.v.d.K., F.E.), Amsterdam University Medical Centre, University of Amsterdam, Neuroscience Institute; Department of Neurology (J.P.A.S.), Maasstad Hospital, Rotterdam; Department of Neurology (H.J.G.), Reinier de Graaf Hospital, Reinier de Graafweg, Delft, the Netherlands; Department of Neurology (R.D.M.H.), King's College Hospital, Denmark Hill, London; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, United Kingdom; Department of Neurology (K.A.S.), University of Texas Health Science Centre at Houston; Department of Biology (N.K., S. Karafiath), Utah Valley University, Orem; Department of Neurology (M.V.), Lahey Hospital and Medical Center, Tufts University School of Medicine, Burlington, MA; Department of Neurology, Mental Health and Sensory Organs (NESMOS) (G.A.), Faculty of Medicine and Psychology, University of Rome 'Sapienza,' Sant' Andrea Hospital, Italy; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Alberta, Canada; Department of Neurology (C.F.), Maastricht University Medical Centre, the Netherlands; Department of Neurology (M.B.), Leeds Teaching Hospitals; Department of Neurology (R.C.R.), Addenbrooke's Hospital, Cambridge, United Kingdom; Department of Neurology (N.J.S.), University at Buffalo Jacobs School of Medicine and Biomedical Sciences, NY; Department of Neurology (R.F.), Scientific Institute San Raffaele, Milano, Italy; Department of Neurology (G.W.v.D.), Canisius Wilhelmina Hospital, Nijmegen; Department of Neurology (M.P.J.G.), Jeroen Bosch Hospital, 's-Hertogenbosch; Department of Neurology (J.V.), Leiden University Medical Centre; and Department of Immunology (B.C.J.), Erasmus MC, University Medical Centre Rotterdam, the Netherlands.; Galassi G; From the Department of Neurology (H.A.-H., H.A., T.H.), Aarhus University Hospital, Denmark; Department of Neurology (A.Y.D., B.v.d.B., C.V., J.R., S.E.L., S. Arends, L.W.G.L., K.K., B.C.J.), Erasmus MC, University Medical Centre Rotterdam, the Netherlands; Department of Neurology (A.M.S.), University of Michigan School of Medicine, Ann Arbor; Department of Neurology (S.A.Z.), University of Pittsburgh Medical Center, PA; Department of Neurology (H.J.W., A.D.), College of Medical, Veterinary and Life Sciences, University of Glasgow, United Kingdom; Department of Neurology (D.R.C.), Johns Hopkins University School of Medicine, Baltimore, MD; Department of Neurology (K.C.G.), St. Elizabeth's Medical Centre, Tufts University, School of Medicine, Boston, MA; Laboratory of Gut-Brain Signaling (Z.I.); Laboratory Sciences and Services Division (LSSD) (Z.I.), icddr,b; National Institute of Neurosciences and Hospital (Q.D.M.), Dhaka, Bangladesh; Department of Neurology (S.H.S.), Odense University Hospital and University of Southern Denmark; Department of Neurology (S. Kusunoki), Kindai University Faculty of Medicine, Osaka-Sayama City, Japan; Department of Neurology (C.C.), Neuromuscular Unit, Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Division of Neurology (K.B.), Department of Medicine, Groote Schuur Hospital, University of Cape Town, South Africa; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, United Kingdom; Department of Neurology (B.v.d.B., H.K.), Franciscus Gasthuis & Vlietland (location: Vlietland Hospital), Schiedam; Department of Neurology (S. Arends, P.W.W.), Haga Hospital, Den Haag; Department of Neurology (L.W.G.L., L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (S. Kuwabara), Chiba University, Chuo-ku, Japan; Department of Neurology (P.V.d.B.), Neuromuscular Reference Centre, University Hospital Saint-Luc, University of Louvain, Brussels, Belgium; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Dysimmune Neuropathies Unit (G.A.M.), Department of Systems Medicine, Tor Vergata University Hospital, Rome, Italy; Department of Medicine (N.S.), University of Malaya, Kuala Lumpur, Malaysia; Department of Neurology (G.G.), University Hospital of Modena, Italy; Department of Clinical Neurophysiology (Y.P.), Reference Centre for NMD, CHU Nantes, Nantes, France; Department of Neurology (J.B.), Saarland University Medical School, Homburg (previous hospital), and MVZ Pfalzklinikum (J.B.), Kusel, Germany (current hospital); Department of Neurology (K.K., R.P.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (C.M.), Hospital Británico, Buenos Aires, Argentina; Department of Neurology (M.J.S.T.), Hospital Marques de Valdecilla, Santander; Department of Neurology (L.Q., L.M.-A.), Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, CIBERER and ERN-NMD, Spain; Department of Neurology (Y.W.), Affiliated Hospital of Jining Medical University, Shandong Province, China; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Research Hospital, Milan University, Italy; Nuffield Department of Clinical Neurosciences (S.R.), University of Oxford and Oxford University Hospitals NHS Foundation Trust, United Kingdom; Department of Neurosciences, Ophthalmology, Rehabilitation, Genetics and Maternal Sciences (A.S.), University of Genova, and IRCCS San Martino Hospital (A.S.), Genova, Italy; Department of Neurology (J.P.), Hospital Clínico de Santiago, Travesia Choupana, Santiago de Compostela (A Coruña), Spain; Department of Neurology (F.H.V.), Franciscus Gasthuis & Vlietland (location: Franciscus Gasthuis), Rotterdam, the Netherlands; Department of Neurology (W.W., N.K.), University of Vermont Medical Centre, Burlington; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (V.G., B.S.), Montefiore Medical Center, Bronx, NY; Department of Neurology (G.C.), University Milano-Bicocca, Monza, Italy; Department of Neurology (G.G.-G.), Hospital Universitario Infanta Sofía, San Sebastián de los Reyes, Spain; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, FLENI, Buenos Aires, Argentina; Department of Neurology (H.D.K.), University Health Network, University of Toronto, Ontario, Canada; Department of Neurology (E.D.), University Hospital of Larissa, Greece; Department of Neurology (S. Attarian), Reference Centre for NMD, CHU Timone ERN NMD, Marseille, France; Department of Neurology (A.J.v.d.K., F.E.), Amsterdam University Medical Centre, University of Amsterdam, Neuroscience Institute; Department of Neurology (J.P.A.S.), Maasstad Hospital, Rotterdam; Department of Neurology (H.J.G.), Reinier de Graaf Hospital, Reinier de Graafweg, Delft, the Netherlands; Department of Neurology (R.D.M.H.), King's College Hospital, Denmark Hill, London; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, United Kingdom; Department of Neurology (K.A.S.), University of Texas Health Science Centre at Houston; Department of Biology (N.K., S. Karafiath), Utah Valley University, Orem; Department of Neurology (M.V.), Lahey Hospital and Medical Center, Tufts University School of Medicine, Burlington, MA; Department of Neurology, Mental Health and Sensory Organs (NESMOS) (G.A.), Faculty of Medicine and Psychology, University of Rome 'Sapienza,' Sant' Andrea Hospital, Italy; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Alberta, Canada; Department of Neurology (C.F.), Maastricht University Medical Centre, the Netherlands; Department of Neurology (M.B.), Leeds Teaching Hospitals; Department of Neurology (R.C.R.), Addenbrooke's Hospital, Cambridge, United Kingdom; Department of Neurology (N.J.S.), University at Buffalo Jacobs School of Medicine and Biomedical Sciences, NY; Department of Neurology (R.F.), Scientific Institute San Raffaele, Milano, Italy; Department of Neurology (G.W.v.D.), Canisius Wilhelmina Hospital, Nijmegen; Department of Neurology (M.P.J.G.), Jeroen Bosch Hospital, 's-Hertogenbosch; Department of Neurology (J.V.), Leiden University Medical Centre; and Department of Immunology (B.C.J.), Erasmus MC, University Medical Centre Rotterdam, the Netherlands.; Pereon Y; From the Department of Neurology (H.A.-H., H.A., T.H.), Aarhus University Hospital, Denmark; Department of Neurology (A.Y.D., B.v.d.B., C.V., J.R., S.E.L., S. Arends, L.W.G.L., K.K., B.C.J.), Erasmus MC, University Medical Centre Rotterdam, the Netherlands; Department of Neurology (A.M.S.), University of Michigan School of Medicine, Ann Arbor; Department of Neurology (S.A.Z.), University of Pittsburgh Medical Center, PA; Department of Neurology (H.J.W., A.D.), College of Medical, Veterinary and Life Sciences, University of Glasgow, United Kingdom; Department of Neurology (D.R.C.), Johns Hopkins University School of Medicine, Baltimore, MD; Department of Neurology (K.C.G.), St. Elizabeth's Medical Centre, Tufts University, School of Medicine, Boston, MA; Laboratory of Gut-Brain Signaling (Z.I.); Laboratory Sciences and Services Division (LSSD) (Z.I.), icddr,b; National Institute of Neurosciences and Hospital (Q.D.M.), Dhaka, Bangladesh; Department of Neurology (S.H.S.), Odense University Hospital and University of Southern Denmark; Department of Neurology (S. Kusunoki), Kindai University Faculty of Medicine, Osaka-Sayama City, Japan; Department of Neurology (C.C.), Neuromuscular Unit, Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Division of Neurology (K.B.), Department of Medicine, Groote Schuur Hospital, University of Cape Town, South Africa; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, United Kingdom; Department of Neurology (B.v.d.B., H.K.), Franciscus Gasthuis & Vlietland (location: Vlietland Hospital), Schiedam; Department of Neurology (S. Arends, P.W.W.), Haga Hospital, Den Haag; Department of Neurology (L.W.G.L., L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (S. Kuwabara), Chiba University, Chuo-ku, Japan; Department of Neurology (P.V.d.B.), Neuromuscular Reference Centre, University Hospital Saint-Luc, University of Louvain, Brussels, Belgium; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Dysimmune Neuropathies Unit (G.A.M.), Department of Systems Medicine, Tor Vergata University Hospital, Rome, Italy; Department of Medicine (N.S.), University of Malaya, Kuala Lumpur, Malaysia; Department of Neurology (G.G.), University Hospital of Modena, Italy; Department of Clinical Neurophysiology (Y.P.), Reference Centre for NMD, CHU Nantes, Nantes, France; Department of Neurology (J.B.), Saarland University Medical School, Homburg (previous hospital), and MVZ Pfalzklinikum (J.B.), Kusel, Germany (current hospital); Department of Neurology (K.K., R.P.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (C.M.), Hospital Británico, Buenos Aires, Argentina; Department of Neurology (M.J.S.T.), Hospital Marques de Valdecilla, Santander; Department of Neurology (L.Q., L.M.-A.), Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, CIBERER and ERN-NMD, Spain; Department of Neurology (Y.W.), Affiliated Hospital of Jining Medical University, Shandong Province, China; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Research Hospital, Milan University, Italy; Nuffield Department of Clinical Neurosciences (S.R.), University of Oxford and Oxford University Hospitals NHS Foundation Trust, United Kingdom; Department of Neurosciences, Ophthalmology, Rehabilitation, Genetics and Maternal Sciences (A.S.), University of Genova, and IRCCS San Martino Hospital (A.S.), Genova, Italy; Department of Neurology (J.P.), Hospital Clínico de Santiago, Travesia Choupana, Santiago de Compostela (A Coruña), Spain; Department of Neurology (F.H.V.), Franciscus Gasthuis & Vlietland (location: Franciscus Gasthuis), Rotterdam, the Netherlands; Department of Neurology (W.W., N.K.), University of Vermont Medical Centre, Burlington; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (V.G., B.S.), Montefiore Medical Center, Bronx, NY; Department of Neurology (G.C.), University Milano-Bicocca, Monza, Italy; Department of Neurology (G.G.-G.), Hospital Universitario Infanta Sofía, San Sebastián de los Reyes, Spain; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, FLENI, Buenos Aires, Argentina; Department of Neurology (H.D.K.), University Health Network, University of Toronto, Ontario, Canada; Department of Neurology (E.D.), University Hospital of Larissa, Greece; Department of Neurology (S. Attarian), Reference Centre for NMD, CHU Timone ERN NMD, Marseille, France; Department of Neurology (A.J.v.d.K., F.E.), Amsterdam University Medical Centre, University of Amsterdam, Neuroscience Institute; Department of Neurology (J.P.A.S.), Maasstad Hospital, Rotterdam; Department of Neurology (H.J.G.), Reinier de Graaf Hospital, Reinier de Graafweg, Delft, the Netherlands; Department of Neurology (R.D.M.H.), King's College Hospital, Denmark Hill, London; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, United Kingdom; Department of Neurology (K.A.S.), University of Texas Health Science Centre at Houston; Department of Biology (N.K., S. Karafiath), Utah Valley University, Orem; Department of Neurology (M.V.), Lahey Hospital and Medical Center, Tufts University School of Medicine, Burlington, MA; Department of Neurology, Mental Health and Sensory Organs (NESMOS) (G.A.), Faculty of Medicine and Psychology, University of Rome 'Sapienza,' Sant' Andrea Hospital, Italy; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Alberta, Canada; Department of Neurology (C.F.), Maastricht University Medical Centre, the Netherlands; Department of Neurology (M.B.), Leeds Teaching Hospitals; Department of Neurology (R.C.R.), Addenbrooke's Hospital, Cambridge, United Kingdom; Department of Neurology (N.J.S.), University at Buffalo Jacobs School of Medicine and Biomedical Sciences, NY; Department of Neurology (R.F.), Scientific Institute San Raffaele, Milano, Italy; Department of Neurology (G.W.v.D.), Canisius Wilhelmina Hospital, Nijmegen; Department of Neurology (M.P.J.G.), Jeroen Bosch Hospital, 's-Hertogenbosch; Department of Neurology (J.V.), Leiden University Medical Centre; and Department of Immunology (B.C.J.), Erasmus MC, University Medical Centre Rotterdam, the Netherlands.; Bürmann J; From the Department of Neurology (H.A.-H., H.A., T.H.), Aarhus University Hospital, Denmark; Department of Neurology (A.Y.D., B.v.d.B., C.V., J.R., S.E.L., S. Arends, L.W.G.L., K.K., B.C.J.), Erasmus MC, University Medical Centre Rotterdam, the Netherlands; Department of Neurology (A.M.S.), University of Michigan School of Medicine, Ann Arbor; Department of Neurology (S.A.Z.), University of Pittsburgh Medical Center, PA; Department of Neurology (H.J.W., A.D.), College of Medical, Veterinary and Life Sciences, University of Glasgow, United Kingdom; Department of Neurology (D.R.C.), Johns Hopkins University School of Medicine, Baltimore, MD; Department of Neurology (K.C.G.), St. Elizabeth's Medical Centre, Tufts University, School of Medicine, Boston, MA; Laboratory of Gut-Brain Signaling (Z.I.); Laboratory Sciences and Services Division (LSSD) (Z.I.), icddr,b; National Institute of Neurosciences and Hospital (Q.D.M.), Dhaka, Bangladesh; Department of Neurology (S.H.S.), Odense University Hospital and University of Southern Denmark; Department of Neurology (S. Kusunoki), Kindai University Faculty of Medicine, Osaka-Sayama City, Japan; Department of Neurology (C.C.), Neuromuscular Unit, Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Division of Neurology (K.B.), Department of Medicine, Groote Schuur Hospital, University of Cape Town, South Africa; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, United Kingdom; Department of Neurology (B.v.d.B., H.K.), Franciscus Gasthuis & Vlietland (location: Vlietland Hospital), Schiedam; Department of Neurology (S. Arends, P.W.W.), Haga Hospital, Den Haag; Department of Neurology (L.W.G.L., L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (S. Kuwabara), Chiba University, Chuo-ku, Japan; Department of Neurology (P.V.d.B.), Neuromuscular Reference Centre, University Hospital Saint-Luc, University of Louvain, Brussels, Belgium; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Dysimmune Neuropathies Unit (G.A.M.), Department of Systems Medicine, Tor Vergata University Hospital, Rome, Italy; Department of Medicine (N.S.), University of Malaya, Kuala Lumpur, Malaysia; Department of Neurology (G.G.), University Hospital of Modena, Italy; Department of Clinical Neurophysiology (Y.P.), Reference Centre for NMD, CHU Nantes, Nantes, France; Department of Neurology (J.B.), Saarland University Medical School, Homburg (previous hospital), and MVZ Pfalzklinikum (J.B.), Kusel, Germany (current hospital); Department of Neurology (K.K., R.P.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (C.M.), Hospital Británico, Buenos Aires, Argentina; Department of Neurology (M.J.S.T.), Hospital Marques de Valdecilla, Santander; Department of Neurology (L.Q., L.M.-A.), Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, CIBERER and ERN-NMD, Spain; Department of Neurology (Y.W.), Affiliated Hospital of Jining Medical University, Shandong Province, China; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Research Hospital, Milan University, Italy; Nuffield Department of Clinical Neurosciences (S.R.), University of Oxford and Oxford University Hospitals NHS Foundation Trust, United Kingdom; Department of Neurosciences, Ophthalmology, Rehabilitation, Genetics and Maternal Sciences (A.S.), University of Genova, and IRCCS San Martino Hospital (A.S.), Genova, Italy; Department of Neurology (J.P.), Hospital Clínico de Santiago, Travesia Choupana, Santiago de Compostela (A Coruña), Spain; Department of Neurology (F.H.V.), Franciscus Gasthuis & Vlietland (location: Franciscus Gasthuis), Rotterdam, the Netherlands; Department of Neurology (W.W., N.K.), University of Vermont Medical Centre, Burlington; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (V.G., B.S.), Montefiore Medical Center, Bronx, NY; Department of Neurology (G.C.), University Milano-Bicocca, Monza, Italy; Department of Neurology (G.G.-G.), Hospital Universitario Infanta Sofía, San Sebastián de los Reyes, Spain; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, FLENI, Buenos Aires, Argentina; Department of Neurology (H.D.K.), University Health Network, University of Toronto, Ontario, Canada; Department of Neurology (E.D.), University Hospital of Larissa, Greece; Department of Neurology (S. Attarian), Reference Centre for NMD, CHU Timone ERN NMD, Marseille, France; Department of Neurology (A.J.v.d.K., F.E.), Amsterdam University Medical Centre, University of Amsterdam, Neuroscience Institute; Department of Neurology (J.P.A.S.), Maasstad Hospital, Rotterdam; Department of Neurology (H.J.G.), Reinier de Graaf Hospital, Reinier de Graafweg, Delft, the Netherlands; Department of Neurology (R.D.M.H.), King's College Hospital, Denmark Hill, London; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, United Kingdom; Department of Neurology (K.A.S.), University of Texas Health Science Centre at Houston; Department of Biology (N.K., S. Karafiath), Utah Valley University, Orem; Department of Neurology (M.V.), Lahey Hospital and Medical Center, Tufts University School of Medicine, Burlington, MA; Department of Neurology, Mental Health and Sensory Organs (NESMOS) (G.A.), Faculty of Medicine and Psychology, University of Rome 'Sapienza,' Sant' Andrea Hospital, Italy; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Alberta, Canada; Department of Neurology (C.F.), Maastricht University Medical Centre, the Netherlands; Department of Neurology (M.B.), Leeds Teaching Hospitals; Department of Neurology (R.C.R.), Addenbrooke's Hospital, Cambridge, United Kingdom; Department of Neurology (N.J.S.), University at Buffalo Jacobs School of Medicine and Biomedical Sciences, NY; Department of Neurology (R.F.), Scientific Institute San Raffaele, Milano, Italy; Department of Neurology (G.W.v.D.), Canisius Wilhelmina Hospital, Nijmegen; Department of Neurology (M.P.J.G.), Jeroen Bosch Hospital, 's-Hertogenbosch; Department of Neurology (J.V.), Leiden University Medical Centre; and Department of Immunology (B.C.J.), Erasmus MC, University Medical Centre Rotterdam, the Netherlands.; Kuitwaard K; From the Department of Neurology (H.A.-H., H.A., T.H.), Aarhus University Hospital, Denmark; Department of Neurology (A.Y.D., B.v.d.B., C.V., J.R., S.E.L., S. Arends, L.W.G.L., K.K., B.C.J.), Erasmus MC, University Medical Centre Rotterdam, the Netherlands; Department of Neurology (A.M.S.), University of Michigan School of Medicine, Ann Arbor; Department of Neurology (S.A.Z.), University of Pittsburgh Medical Center, PA; Department of Neurology (H.J.W., A.D.), College of Medical, Veterinary and Life Sciences, University of Glasgow, United Kingdom; Department of Neurology (D.R.C.), Johns Hopkins University School of Medicine, Baltimore, MD; Department of Neurology (K.C.G.), St. Elizabeth's Medical Centre, Tufts University, School of Medicine, Boston, MA; Laboratory of Gut-Brain Signaling (Z.I.); Laboratory Sciences and Services Division (LSSD) (Z.I.), icddr,b; National Institute of Neurosciences and Hospital (Q.D.M.), Dhaka, Bangladesh; Department of Neurology (S.H.S.), Odense University Hospital and University of Southern Denmark; Department of Neurology (S. Kusunoki), Kindai University Faculty of Medicine, Osaka-Sayama City, Japan; Department of Neurology (C.C.), Neuromuscular Unit, Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Division of Neurology (K.B.), Department of Medicine, Groote Schuur Hospital, University of Cape Town, South Africa; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, United Kingdom; Department of Neurology (B.v.d.B., H.K.), Franciscus Gasthuis & Vlietland (location: Vlietland Hospital), Schiedam; Department of Neurology (S. Arends, P.W.W.), Haga Hospital, Den Haag; Department of Neurology (L.W.G.L., L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (S. Kuwabara), Chiba University, Chuo-ku, Japan; Department of Neurology (P.V.d.B.), Neuromuscular Reference Centre, University Hospital Saint-Luc, University of Louvain, Brussels, Belgium; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Dysimmune Neuropathies Unit (G.A.M.), Department of Systems Medicine, Tor Vergata University Hospital, Rome, Italy; Department of Medicine (N.S.), University of Malaya, Kuala Lumpur, Malaysia; Department of Neurology (G.G.), University Hospital of Modena, Italy; Department of Clinical Neurophysiology (Y.P.), Reference Centre for NMD, CHU Nantes, Nantes, France; Department of Neurology (J.B.), Saarland University Medical School, Homburg (previous hospital), and MVZ Pfalzklinikum (J.B.), Kusel, Germany (current hospital); Department of Neurology (K.K., R.P.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (C.M.), Hospital Británico, Buenos Aires, Argentina; Department of Neurology (M.J.S.T.), Hospital Marques de Valdecilla, Santander; Department of Neurology (L.Q., L.M.-A.), Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, CIBERER and ERN-NMD, Spain; Department of Neurology (Y.W.), Affiliated Hospital of Jining Medical University, Shandong Province, China; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Research Hospital, Milan University, Italy; Nuffield Department of Clinical Neurosciences (S.R.), University of Oxford and Oxford University Hospitals NHS Foundation Trust, United Kingdom; Department of Neurosciences, Ophthalmology, Rehabilitation, Genetics and Maternal Sciences (A.S.), University of Genova, and IRCCS San Martino Hospital (A.S.), Genova, Italy; Department of Neurology (J.P.), Hospital Clínico de Santiago, Travesia Choupana, Santiago de Compostela (A Coruña), Spain; Department of Neurology (F.H.V.), Franciscus Gasthuis & Vlietland (location: Franciscus Gasthuis), Rotterdam, the Netherlands; Department of Neurology (W.W., N.K.), University of Vermont Medical Centre, Burlington; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (V.G., B.S.), Montefiore Medical Center, Bronx, NY; Department of Neurology (G.C.), University Milano-Bicocca, Monza, Italy; Department of Neurology (G.G.-G.), Hospital Universitario Infanta Sofía, San Sebastián de los Reyes, Spain; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, FLENI, Buenos Aires, Argentina; Department of Neurology (H.D.K.), University Health Network, University of Toronto, Ontario, Canada; Department of Neurology (E.D.), University Hospital of Larissa, Greece; Department of Neurology (S. Attarian), Reference Centre for NMD, CHU Timone ERN NMD, Marseille, France; Department of Neurology (A.J.v.d.K., F.E.), Amsterdam University Medical Centre, University of Amsterdam, Neuroscience Institute; Department of Neurology (J.P.A.S.), Maasstad Hospital, Rotterdam; Department of Neurology (H.J.G.), Reinier de Graaf Hospital, Reinier de Graafweg, Delft, the Netherlands; Department of Neurology (R.D.M.H.), King's College Hospital, Denmark Hill, London; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, United Kingdom; Department of Neurology (K.A.S.), University of Texas Health Science Centre at Houston; Department of Biology (N.K., S. Karafiath), Utah Valley University, Orem; Department of Neurology (M.V.), Lahey Hospital and Medical Center, Tufts University School of Medicine, Burlington, MA; Department of Neurology, Mental Health and Sensory Organs (NESMOS) (G.A.), Faculty of Medicine and Psychology, University of Rome 'Sapienza,' Sant' Andrea Hospital, Italy; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Alberta, Canada; Department of Neurology (C.F.), Maastricht University Medical Centre, the Netherlands; Department of Neurology (M.B.), Leeds Teaching Hospitals; Department of Neurology (R.C.R.), Addenbrooke's Hospital, Cambridge, United Kingdom; Department of Neurology (N.J.S.), University at Buffalo Jacobs School of Medicine and Biomedical Sciences, NY; Department of Neurology (R.F.), Scientific Institute San Raffaele, Milano, Italy; Department of Neurology (G.W.v.D.), Canisius Wilhelmina Hospital, Nijmegen; Department of Neurology (M.P.J.G.), Jeroen Bosch Hospital, 's-Hertogenbosch; Department of Neurology (J.V.), Leiden University Medical Centre; and Department of Immunology (B.C.J.), Erasmus MC, University Medical Centre Rotterdam, the Netherlands.; Kleyweg RP; From the Department of Neurology (H.A.-H., H.A., T.H.), Aarhus University Hospital, Denmark; Department of Neurology (A.Y.D., B.v.d.B., C.V., J.R., S.E.L., S. Arends, L.W.G.L., K.K., B.C.J.), Erasmus MC, University Medical Centre Rotterdam, the Netherlands; Department of Neurology (A.M.S.), University of Michigan School of Medicine, Ann Arbor; Department of Neurology (S.A.Z.), University of Pittsburgh Medical Center, PA; Department of Neurology (H.J.W., A.D.), College of Medical, Veterinary and Life Sciences, University of Glasgow, United Kingdom; Department of Neurology (D.R.C.), Johns Hopkins University School of Medicine, Baltimore, MD; Department of Neurology (K.C.G.), St. Elizabeth's Medical Centre, Tufts University, School of Medicine, Boston, MA; Laboratory of Gut-Brain Signaling (Z.I.); Laboratory Sciences and Services Division (LSSD) (Z.I.), icddr,b; National Institute of Neurosciences and Hospital (Q.D.M.), Dhaka, Bangladesh; Department of Neurology (S.H.S.), Odense University Hospital and University of Southern Denmark; Department of Neurology (S. Kusunoki), Kindai University Faculty of Medicine, Osaka-Sayama City, Japan; Department of Neurology (C.C.), Neuromuscular Unit, Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Division of Neurology (K.B.), Department of Medicine, Groote Schuur Hospital, University of Cape Town, South Africa; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, United Kingdom; Department of Neurology (B.v.d.B., H.K.), Franciscus Gasthuis & Vlietland (location: Vlietland Hospital), Schiedam; Department of Neurology (S. Arends, P.W.W.), Haga Hospital, Den Haag; Department of Neurology (L.W.G.L., L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (S. Kuwabara), Chiba University, Chuo-ku, Japan; Department of Neurology (P.V.d.B.), Neuromuscular Reference Centre, University Hospital Saint-Luc, University of Louvain, Brussels, Belgium; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Dysimmune Neuropathies Unit (G.A.M.), Department of Systems Medicine, Tor Vergata University Hospital, Rome, Italy; Department of Medicine (N.S.), University of Malaya, Kuala Lumpur, Malaysia; Department of Neurology (G.G.), University Hospital of Modena, Italy; Department of Clinical Neurophysiology (Y.P.), Reference Centre for NMD, CHU Nantes, Nantes, France; Department of Neurology (J.B.), Saarland University Medical School, Homburg (previous hospital), and MVZ Pfalzklinikum (J.B.), Kusel, Germany (current hospital); Department of Neurology (K.K., R.P.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (C.M.), Hospital Británico, Buenos Aires, Argentina; Department of Neurology (M.J.S.T.), Hospital Marques de Valdecilla, Santander; Department of Neurology (L.Q., L.M.-A.), Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, CIBERER and ERN-NMD, Spain; Department of Neurology (Y.W.), Affiliated Hospital of Jining Medical University, Shandong Province, China; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Research Hospital, Milan University, Italy; Nuffield Department of Clinical Neurosciences (S.R.), University of Oxford and Oxford University Hospitals NHS Foundation Trust, United Kingdom; Department of Neurosciences, Ophthalmology, Rehabilitation, Genetics and Maternal Sciences (A.S.), University of Genova, and IRCCS San Martino Hospital (A.S.), Genova, Italy; Department of Neurology (J.P.), Hospital Clínico de Santiago, Travesia Choupana, Santiago de Compostela (A Coruña), Spain; Department of Neurology (F.H.V.), Franciscus Gasthuis & Vlietland (location: Franciscus Gasthuis), Rotterdam, the Netherlands; Department of Neurology (W.W., N.K.), University of Vermont Medical Centre, Burlington; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (V.G., B.S.), Montefiore Medical Center, Bronx, NY; Department of Neurology (G.C.), University Milano-Bicocca, Monza, Italy; Department of Neurology (G.G.-G.), Hospital Universitario Infanta Sofía, San Sebastián de los Reyes, Spain; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, FLENI, Buenos Aires, Argentina; Department of Neurology (H.D.K.), University Health Network, University of Toronto, Ontario, Canada; Department of Neurology (E.D.), University Hospital of Larissa, Greece; Department of Neurology (S. Attarian), Reference Centre for NMD, CHU Timone ERN NMD, Marseille, France; Department of Neurology (A.J.v.d.K., F.E.), Amsterdam University Medical Centre, University of Amsterdam, Neuroscience Institute; Department of Neurology (J.P.A.S.), Maasstad Hospital, Rotterdam; Department of Neurology (H.J.G.), Reinier de Graaf Hospital, Reinier de Graafweg, Delft, the Netherlands; Department of Neurology (R.D.M.H.), King's College Hospital, Denmark Hill, London; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, United Kingdom; Department of Neurology (K.A.S.), University of Texas Health Science Centre at Houston; Department of Biology (N.K., S. Karafiath), Utah Valley University, Orem; Department of Neurology (M.V.), Lahey Hospital and Medical Center, Tufts University School of Medicine, Burlington, MA; Department of Neurology, Mental Health and Sensory Organs (NESMOS) (G.A.), Faculty of Medicine and Psychology, University of Rome 'Sapienza,' Sant' Andrea Hospital, Italy; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Alberta, Canada; Department of Neurology (C.F.), Maastricht University Medical Centre, the Netherlands; Department of Neurology (M.B.), Leeds Teaching Hospitals; Department of Neurology (R.C.R.), Addenbrooke's Hospital, Cambridge, United Kingdom; Department of Neurology (N.J.S.), University at Buffalo Jacobs School of Medicine and Biomedical Sciences, NY; Department of Neurology (R.F.), Scientific Institute San Raffaele, Milano, Italy; Department of Neurology (G.W.v.D.), Canisius Wilhelmina Hospital, Nijmegen; Department of Neurology (M.P.J.G.), Jeroen Bosch Hospital, 's-Hertogenbosch; Department of Neurology (J.V.), Leiden University Medical Centre; and Department of Immunology (B.C.J.), Erasmus MC, University Medical Centre Rotterdam, the Netherlands.; Marchesoni C; From the Department of Neurology (H.A.-H., H.A., T.H.), Aarhus University Hospital, Denmark; Department of Neurology (A.Y.D., B.v.d.B., C.V., J.R., S.E.L., S. Arends, L.W.G.L., K.K., B.C.J.), Erasmus MC, University Medical Centre Rotterdam, the Netherlands; Department of Neurology (A.M.S.), University of Michigan School of Medicine, Ann Arbor; Department of Neurology (S.A.Z.), University of Pittsburgh Medical Center, PA; Department of Neurology (H.J.W., A.D.), College of Medical, Veterinary and Life Sciences, University of Glasgow, United Kingdom; Department of Neurology (D.R.C.), Johns Hopkins University School of Medicine, Baltimore, MD; Department of Neurology (K.C.G.), St. Elizabeth's Medical Centre, Tufts University, School of Medicine, Boston, MA; Laboratory of Gut-Brain Signaling (Z.I.); Laboratory Sciences and Services Division (LSSD) (Z.I.), icddr,b; National Institute of Neurosciences and Hospital (Q.D.M.), Dhaka, Bangladesh; Department of Neurology (S.H.S.), Odense University Hospital and University of Southern Denmark; Department of Neurology (S. Kusunoki), Kindai University Faculty of Medicine, Osaka-Sayama City, Japan; Department of Neurology (C.C.), Neuromuscular Unit, Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Division of Neurology (K.B.), Department of Medicine, Groote Schuur Hospital, University of Cape Town, South Africa; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, United Kingdom; Department of Neurology (B.v.d.B., H.K.), Franciscus Gasthuis & Vlietland (location: Vlietland Hospital), Schiedam; Department of Neurology (S. Arends, P.W.W.), Haga Hospital, Den Haag; Department of Neurology (L.W.G.L., L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (S. Kuwabara), Chiba University, Chuo-ku, Japan; Department of Neurology (P.V.d.B.), Neuromuscular Reference Centre, University Hospital Saint-Luc, University of Louvain, Brussels, Belgium; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Dysimmune Neuropathies Unit (G.A.M.), Department of Systems Medicine, Tor Vergata University Hospital, Rome, Italy; Department of Medicine (N.S.), University of Malaya, Kuala Lumpur, Malaysia; Department of Neurology (G.G.), University Hospital of Modena, Italy; Department of Clinical Neurophysiology (Y.P.), Reference Centre for NMD, CHU Nantes, Nantes, France; Department of Neurology (J.B.), Saarland University Medical School, Homburg (previous hospital), and MVZ Pfalzklinikum (J.B.), Kusel, Germany (current hospital); Department of Neurology (K.K., R.P.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (C.M.), Hospital Británico, Buenos Aires, Argentina; Department of Neurology (M.J.S.T.), Hospital Marques de Valdecilla, Santander; Department of Neurology (L.Q., L.M.-A.), Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, CIBERER and ERN-NMD, Spain; Department of Neurology (Y.W.), Affiliated Hospital of Jining Medical University, Shandong Province, China; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Research Hospital, Milan University, Italy; Nuffield Department of Clinical Neurosciences (S.R.), University of Oxford and Oxford University Hospitals NHS Foundation Trust, United Kingdom; Department of Neurosciences, Ophthalmology, Rehabilitation, Genetics and Maternal Sciences (A.S.), University of Genova, and IRCCS San Martino Hospital (A.S.), Genova, Italy; Department of Neurology (J.P.), Hospital Clínico de Santiago, Travesia Choupana, Santiago de Compostela (A Coruña), Spain; Department of Neurology (F.H.V.), Franciscus Gasthuis & Vlietland (location: Franciscus Gasthuis), Rotterdam, the Netherlands; Department of Neurology (W.W., N.K.), University of Vermont Medical Centre, Burlington; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (V.G., B.S.), Montefiore Medical Center, Bronx, NY; Department of Neurology (G.C.), University Milano-Bicocca, Monza, Italy; Department of Neurology (G.G.-G.), Hospital Universitario Infanta Sofía, San Sebastián de los Reyes, Spain; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, FLENI, Buenos Aires, Argentina; Department of Neurology (H.D.K.), University Health Network, University of Toronto, Ontario, Canada; Department of Neurology (E.D.), University Hospital of Larissa, Greece; Department of Neurology (S. Attarian), Reference Centre for NMD, CHU Timone ERN NMD, Marseille, France; Department of Neurology (A.J.v.d.K., F.E.), Amsterdam University Medical Centre, University of Amsterdam, Neuroscience Institute; Department of Neurology (J.P.A.S.), Maasstad Hospital, Rotterdam; Department of Neurology (H.J.G.), Reinier de Graaf Hospital, Reinier de Graafweg, Delft, the Netherlands; Department of Neurology (R.D.M.H.), King's College Hospital, Denmark Hill, London; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, United Kingdom; Department of Neurology (K.A.S.), University of Texas Health Science Centre at Houston; Department of Biology (N.K., S. Karafiath), Utah Valley University, Orem; Department of Neurology (M.V.), Lahey Hospital and Medical Center, Tufts University School of Medicine, Burlington, MA; Department of Neurology, Mental Health and Sensory Organs (NESMOS) (G.A.), Faculty of Medicine and Psychology, University of Rome 'Sapienza,' Sant' Andrea Hospital, Italy; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Alberta, Canada; Department of Neurology (C.F.), Maastricht University Medical Centre, the Netherlands; Department of Neurology (M.B.), Leeds Teaching Hospitals; Department of Neurology (R.C.R.), Addenbrooke's Hospital, Cambridge, United Kingdom; Department of Neurology (N.J.S.), University at Buffalo Jacobs School of Medicine and Biomedical Sciences, NY; Department of Neurology (R.F.), Scientific Institute San Raffaele, Milano, Italy; Department of Neurology (G.W.v.D.), Canisius Wilhelmina Hospital, Nijmegen; Department of Neurology (M.P.J.G.), Jeroen Bosch Hospital, 's-Hertogenbosch; Department of Neurology (J.V.), Leiden University Medical Centre; and Department of Immunology (B.C.J.), Erasmus MC, University Medical Centre Rotterdam, the Netherlands.; Sedano Tous MJ; From the Department of Neurology (H.A.-H., H.A., T.H.), Aarhus University Hospital, Denmark; Department of Neurology (A.Y.D., B.v.d.B., C.V., J.R., S.E.L., S. Arends, L.W.G.L., K.K., B.C.J.), Erasmus MC, University Medical Centre Rotterdam, the Netherlands; Department of Neurology (A.M.S.), University of Michigan School of Medicine, Ann Arbor; Department of Neurology (S.A.Z.), University of Pittsburgh Medical Center, PA; Department of Neurology (H.J.W., A.D.), College of Medical, Veterinary and Life Sciences, University of Glasgow, United Kingdom; Department of Neurology (D.R.C.), Johns Hopkins University School of Medicine, Baltimore, MD; Department of Neurology (K.C.G.), St. Elizabeth's Medical Centre, Tufts University, School of Medicine, Boston, MA; Laboratory of Gut-Brain Signaling (Z.I.); Laboratory Sciences and Services Division (LSSD) (Z.I.), icddr,b; National Institute of Neurosciences and Hospital (Q.D.M.), Dhaka, Bangladesh; Department of Neurology (S.H.S.), Odense University Hospital and University of Southern Denmark; Department of Neurology (S. Kusunoki), Kindai University Faculty of Medicine, Osaka-Sayama City, Japan; Department of Neurology (C.C.), Neuromuscular Unit, Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Division of Neurology (K.B.), Department of Medicine, Groote Schuur Hospital, University of Cape Town, South Africa; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, United Kingdom; Department of Neurology (B.v.d.B., H.K.), Franciscus Gasthuis & Vlietland (location: Vlietland Hospital), Schiedam; Department of Neurology (S. Arends, P.W.W.), Haga Hospital, Den Haag; Department of Neurology (L.W.G.L., L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (S. Kuwabara), Chiba University, Chuo-ku, Japan; Department of Neurology (P.V.d.B.), Neuromuscular Reference Centre, University Hospital Saint-Luc, University of Louvain, Brussels, Belgium; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Dysimmune Neuropathies Unit (G.A.M.), Department of Systems Medicine, Tor Vergata University Hospital, Rome, Italy; Department of Medicine (N.S.), University of Malaya, Kuala Lumpur, Malaysia; Department of Neurology (G.G.), University Hospital of Modena, Italy; Department of Clinical Neurophysiology (Y.P.), Reference Centre for NMD, CHU Nantes, Nantes, France; Department of Neurology (J.B.), Saarland University Medical School, Homburg (previous hospital), and MVZ Pfalzklinikum (J.B.), Kusel, Germany (current hospital); Department of Neurology (K.K., R.P.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (C.M.), Hospital Británico, Buenos Aires, Argentina; Department of Neurology (M.J.S.T.), Hospital Marques de Valdecilla, Santander; Department of Neurology (L.Q., L.M.-A.), Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, CIBERER and ERN-NMD, Spain; Department of Neurology (Y.W.), Affiliated Hospital of Jining Medical University, Shandong Province, China; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Research Hospital, Milan University, Italy; Nuffield Department of Clinical Neurosciences (S.R.), University of Oxford and Oxford University Hospitals NHS Foundation Trust, United Kingdom; Department of Neurosciences, Ophthalmology, Rehabilitation, Genetics and Maternal Sciences (A.S.), University of Genova, and IRCCS San Martino Hospital (A.S.), Genova, Italy; Department of Neurology (J.P.), Hospital Clínico de Santiago, Travesia Choupana, Santiago de Compostela (A Coruña), Spain; Department of Neurology (F.H.V.), Franciscus Gasthuis & Vlietland (location: Franciscus Gasthuis), Rotterdam, the Netherlands; Department of Neurology (W.W., N.K.), University of Vermont Medical Centre, Burlington; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (V.G., B.S.), Montefiore Medical Center, Bronx, NY; Department of Neurology (G.C.), University Milano-Bicocca, Monza, Italy; Department of Neurology (G.G.-G.), Hospital Universitario Infanta Sofía, San Sebastián de los Reyes, Spain; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, FLENI, Buenos Aires, Argentina; Department of Neurology (H.D.K.), University Health Network, University of Toronto, Ontario, Canada; Department of Neurology (E.D.), University Hospital of Larissa, Greece; Department of Neurology (S. Attarian), Reference Centre for NMD, CHU Timone ERN NMD, Marseille, France; Department of Neurology (A.J.v.d.K., F.E.), Amsterdam University Medical Centre, University of Amsterdam, Neuroscience Institute; Department of Neurology (J.P.A.S.), Maasstad Hospital, Rotterdam; Department of Neurology (H.J.G.), Reinier de Graaf Hospital, Reinier de Graafweg, Delft, the Netherlands; Department of Neurology (R.D.M.H.), King's College Hospital, Denmark Hill, London; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, United Kingdom; Department of Neurology (K.A.S.), University of Texas Health Science Centre at Houston; Department of Biology (N.K., S. Karafiath), Utah Valley University, Orem; Department of Neurology (M.V.), Lahey Hospital and Medical Center, Tufts University School of Medicine, Burlington, MA; Department of Neurology, Mental Health and Sensory Organs (NESMOS) (G.A.), Faculty of Medicine and Psychology, University of Rome 'Sapienza,' Sant' Andrea Hospital, Italy; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Alberta, Canada; Department of Neurology (C.F.), Maastricht University Medical Centre, the Netherlands; Department of Neurology (M.B.), Leeds Teaching Hospitals; Department of Neurology (R.C.R.), Addenbrooke's Hospital, Cambridge, United Kingdom; Department of Neurology (N.J.S.), University at Buffalo Jacobs School of Medicine and Biomedical Sciences, NY; Department of Neurology (R.F.), Scientific Institute San Raffaele, Milano, Italy; Department of Neurology (G.W.v.D.), Canisius Wilhelmina Hospital, Nijmegen; Department of Neurology (M.P.J.G.), Jeroen Bosch Hospital, 's-Hertogenbosch; Department of Neurology (J.V.), Leiden University Medical Centre; and Department of Immunology (B.C.J.), Erasmus MC, University Medical Centre Rotterdam, the Netherlands.; Querol L; From the Department of Neurology (H.A.-H., H.A., T.H.), Aarhus University Hospital, Denmark; Department of Neurology (A.Y.D., B.v.d.B., C.V., J.R., S.E.L., S. Arends, L.W.G.L., K.K., B.C.J.), Erasmus MC, University Medical Centre Rotterdam, the Netherlands; Department of Neurology (A.M.S.), University of Michigan School of Medicine, Ann Arbor; Department of Neurology (S.A.Z.), University of Pittsburgh Medical Center, PA; Department of Neurology (H.J.W., A.D.), College of Medical, Veterinary and Life Sciences, University of Glasgow, United Kingdom; Department of Neurology (D.R.C.), Johns Hopkins University School of Medicine, Baltimore, MD; Department of Neurology (K.C.G.), St. Elizabeth's Medical Centre, Tufts University, School of Medicine, Boston, MA; Laboratory of Gut-Brain Signaling (Z.I.); Laboratory Sciences and Services Division (LSSD) (Z.I.), icddr,b; National Institute of Neurosciences and Hospital (Q.D.M.), Dhaka, Bangladesh; Department of Neurology (S.H.S.), Odense University Hospital and University of Southern Denmark; Department of Neurology (S. Kusunoki), Kindai University Faculty of Medicine, Osaka-Sayama City, Japan; Department of Neurology (C.C.), Neuromuscular Unit, Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Division of Neurology (K.B.), Department of Medicine, Groote Schuur Hospital, University of Cape Town, South Africa; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, United Kingdom; Department of Neurology (B.v.d.B., H.K.), Franciscus Gasthuis & Vlietland (location: Vlietland Hospital), Schiedam; Department of Neurology (S. Arends, P.W.W.), Haga Hospital, Den Haag; Department of Neurology (L.W.G.L., L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (S. Kuwabara), Chiba University, Chuo-ku, Japan; Department of Neurology (P.V.d.B.), Neuromuscular Reference Centre, University Hospital Saint-Luc, University of Louvain, Brussels, Belgium; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Dysimmune Neuropathies Unit (G.A.M.), Department of Systems Medicine, Tor Vergata University Hospital, Rome, Italy; Department of Medicine (N.S.), University of Malaya, Kuala Lumpur, Malaysia; Department of Neurology (G.G.), University Hospital of Modena, Italy; Department of Clinical Neurophysiology (Y.P.), Reference Centre for NMD, CHU Nantes, Nantes, France; Department of Neurology (J.B.), Saarland University Medical School, Homburg (previous hospital), and MVZ Pfalzklinikum (J.B.), Kusel, Germany (current hospital); Department of Neurology (K.K., R.P.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (C.M.), Hospital Británico, Buenos Aires, Argentina; Department of Neurology (M.J.S.T.), Hospital Marques de Valdecilla, Santander; Department of Neurology (L.Q., L.M.-A.), Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, CIBERER and ERN-NMD, Spain; Department of Neurology (Y.W.), Affiliated Hospital of Jining Medical University, Shandong Province, China; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Research Hospital, Milan University, Italy; Nuffield Department of Clinical Neurosciences (S.R.), University of Oxford and Oxford University Hospitals NHS Foundation Trust, United Kingdom; Department of Neurosciences, Ophthalmology, Rehabilitation, Genetics and Maternal Sciences (A.S.), University of Genova, and IRCCS San Martino Hospital (A.S.), Genova, Italy; Department of Neurology (J.P.), Hospital Clínico de Santiago, Travesia Choupana, Santiago de Compostela (A Coruña), Spain; Department of Neurology (F.H.V.), Franciscus Gasthuis & Vlietland (location: Franciscus Gasthuis), Rotterdam, the Netherlands; Department of Neurology (W.W., N.K.), University of Vermont Medical Centre, Burlington; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (V.G., B.S.), Montefiore Medical Center, Bronx, NY; Department of Neurology (G.C.), University Milano-Bicocca, Monza, Italy; Department of Neurology (G.G.-G.), Hospital Universitario Infanta Sofía, San Sebastián de los Reyes, Spain; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, FLENI, Buenos Aires, Argentina; Department of Neurology (H.D.K.), University Health Network, University of Toronto, Ontario, Canada; Department of Neurology (E.D.), University Hospital of Larissa, Greece; Department of Neurology (S. Attarian), Reference Centre for NMD, CHU Timone ERN NMD, Marseille, France; Department of Neurology (A.J.v.d.K., F.E.), Amsterdam University Medical Centre, University of Amsterdam, Neuroscience Institute; Department of Neurology (J.P.A.S.), Maasstad Hospital, Rotterdam; Department of Neurology (H.J.G.), Reinier de Graaf Hospital, Reinier de Graafweg, Delft, the Netherlands; Department of Neurology (R.D.M.H.), King's College Hospital, Denmark Hill, London; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, United Kingdom; Department of Neurology (K.A.S.), University of Texas Health Science Centre at Houston; Department of Biology (N.K., S. Karafiath), Utah Valley University, Orem; Department of Neurology (M.V.), Lahey Hospital and Medical Center, Tufts University School of Medicine, Burlington, MA; Department of Neurology, Mental Health and Sensory Organs (NESMOS) (G.A.), Faculty of Medicine and Psychology, University of Rome 'Sapienza,' Sant' Andrea Hospital, Italy; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Alberta, Canada; Department of Neurology (C.F.), Maastricht University Medical Centre, the Netherlands; Department of Neurology (M.B.), Leeds Teaching Hospitals; Department of Neurology (R.C.R.), Addenbrooke's Hospital, Cambridge, United Kingdom; Department of Neurology (N.J.S.), University at Buffalo Jacobs School of Medicine and Biomedical Sciences, NY; Department of Neurology (R.F.), Scientific Institute San Raffaele, Milano, Italy; Department of Neurology (G.W.v.D.), Canisius Wilhelmina Hospital, Nijmegen; Department of Neurology (M.P.J.G.), Jeroen Bosch Hospital, 's-Hertogenbosch; Department of Neurology (J.V.), Leiden University Medical Centre; and Department of Immunology (B.C.J.), Erasmus MC, University Medical Centre Rotterdam, the Netherlands.; Martín-Aguilar L; From the Department of Neurology (H.A.-H., H.A., T.H.), Aarhus University Hospital, Denmark; Department of Neurology (A.Y.D., B.v.d.B., C.V., J.R., S.E.L., S. Arends, L.W.G.L., K.K., B.C.J.), Erasmus MC, University Medical Centre Rotterdam, the Netherlands; Department of Neurology (A.M.S.), University of Michigan School of Medicine, Ann Arbor; Department of Neurology (S.A.Z.), University of Pittsburgh Medical Center, PA; Department of Neurology (H.J.W., A.D.), College of Medical, Veterinary and Life Sciences, University of Glasgow, United Kingdom; Department of Neurology (D.R.C.), Johns Hopkins University School of Medicine, Baltimore, MD; Department of Neurology (K.C.G.), St. Elizabeth's Medical Centre, Tufts University, School of Medicine, Boston, MA; Laboratory of Gut-Brain Signaling (Z.I.); Laboratory Sciences and Services Division (LSSD) (Z.I.), icddr,b; National Institute of Neurosciences and Hospital (Q.D.M.), Dhaka, Bangladesh; Department of Neurology (S.H.S.), Odense University Hospital and University of Southern Denmark; Department of Neurology (S. Kusunoki), Kindai University Faculty of Medicine, Osaka-Sayama City, Japan; Department of Neurology (C.C.), Neuromuscular Unit, Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Division of Neurology (K.B.), Department of Medicine, Groote Schuur Hospital, University of Cape Town, South Africa; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, United Kingdom; Department of Neurology (B.v.d.B., H.K.), Franciscus Gasthuis & Vlietland (location: Vlietland Hospital), Schiedam; Department of Neurology (S. Arends, P.W.W.), Haga Hospital, Den Haag; Department of Neurology (L.W.G.L., L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (S. Kuwabara), Chiba University, Chuo-ku, Japan; Department of Neurology (P.V.d.B.), Neuromuscular Reference Centre, University Hospital Saint-Luc, University of Louvain, Brussels, Belgium; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Dysimmune Neuropathies Unit (G.A.M.), Department of Systems Medicine, Tor Vergata University Hospital, Rome, Italy; Department of Medicine (N.S.), University of Malaya, Kuala Lumpur, Malaysia; Department of Neurology (G.G.), University Hospital of Modena, Italy; Department of Clinical Neurophysiology (Y.P.), Reference Centre for NMD, CHU Nantes, Nantes, France; Department of Neurology (J.B.), Saarland University Medical School, Homburg (previous hospital), and MVZ Pfalzklinikum (J.B.), Kusel, Germany (current hospital); Department of Neurology (K.K., R.P.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (C.M.), Hospital Británico, Buenos Aires, Argentina; Department of Neurology (M.J.S.T.), Hospital Marques de Valdecilla, Santander; Department of Neurology (L.Q., L.M.-A.), Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, CIBERER and ERN-NMD, Spain; Department of Neurology (Y.W.), Affiliated Hospital of Jining Medical University, Shandong Province, China; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Research Hospital, Milan University, Italy; Nuffield Department of Clinical Neurosciences (S.R.), University of Oxford and Oxford University Hospitals NHS Foundation Trust, United Kingdom; Department of Neurosciences, Ophthalmology, Rehabilitation, Genetics and Maternal Sciences (A.S.), University of Genova, and IRCCS San Martino Hospital (A.S.), Genova, Italy; Department of Neurology (J.P.), Hospital Clínico de Santiago, Travesia Choupana, Santiago de Compostela (A Coruña), Spain; Department of Neurology (F.H.V.), Franciscus Gasthuis & Vlietland (location: Franciscus Gasthuis), Rotterdam, the Netherlands; Department of Neurology (W.W., N.K.), University of Vermont Medical Centre, Burlington; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (V.G., B.S.), Montefiore Medical Center, Bronx, NY; Department of Neurology (G.C.), University Milano-Bicocca, Monza, Italy; Department of Neurology (G.G.-G.), Hospital Universitario Infanta Sofía, San Sebastián de los Reyes, Spain; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, FLENI, Buenos Aires, Argentina; Department of Neurology (H.D.K.), University Health Network, University of Toronto, Ontario, Canada; Department of Neurology (E.D.), University Hospital of Larissa, Greece; Department of Neurology (S. Attarian), Reference Centre for NMD, CHU Timone ERN NMD, Marseille, France; Department of Neurology (A.J.v.d.K., F.E.), Amsterdam University Medical Centre, University of Amsterdam, Neuroscience Institute; Department of Neurology (J.P.A.S.), Maasstad Hospital, Rotterdam; Department of Neurology (H.J.G.), Reinier de Graaf Hospital, Reinier de Graafweg, Delft, the Netherlands; Department of Neurology (R.D.M.H.), King's College Hospital, Denmark Hill, London; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, United Kingdom; Department of Neurology (K.A.S.), University of Texas Health Science Centre at Houston; Department of Biology (N.K., S. Karafiath), Utah Valley University, Orem; Department of Neurology (M.V.), Lahey Hospital and Medical Center, Tufts University School of Medicine, Burlington, MA; Department of Neurology, Mental Health and Sensory Organs (NESMOS) (G.A.), Faculty of Medicine and Psychology, University of Rome 'Sapienza,' Sant' Andrea Hospital, Italy; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Alberta, Canada; Department of Neurology (C.F.), Maastricht University Medical Centre, the Netherlands; Department of Neurology (M.B.), Leeds Teaching Hospitals; Department of Neurology (R.C.R.), Addenbrooke's Hospital, Cambridge, United Kingdom; Department of Neurology (N.J.S.), University at Buffalo Jacobs School of Medicine and Biomedical Sciences, NY; Department of Neurology (R.F.), Scientific Institute San Raffaele, Milano, Italy; Department of Neurology (G.W.v.D.), Canisius Wilhelmina Hospital, Nijmegen; Department of Neurology (M.P.J.G.), Jeroen Bosch Hospital, 's-Hertogenbosch; Department of Neurology (J.V.), Leiden University Medical Centre; and Department of Immunology (B.C.J.), Erasmus MC, University Medical Centre Rotterdam, the Netherlands.; Wang Y; From the Department of Neurology (H.A.-H., H.A., T.H.), Aarhus University Hospital, Denmark; Department of Neurology (A.Y.D., B.v.d.B., C.V., J.R., S.E.L., S. Arends, L.W.G.L., K.K., B.C.J.), Erasmus MC, University Medical Centre Rotterdam, the Netherlands; Department of Neurology (A.M.S.), University of Michigan School of Medicine, Ann Arbor; Department of Neurology (S.A.Z.), University of Pittsburgh Medical Center, PA; Department of Neurology (H.J.W., A.D.), College of Medical, Veterinary and Life Sciences, University of Glasgow, United Kingdom; Department of Neurology (D.R.C.), Johns Hopkins University School of Medicine, Baltimore, MD; Department of Neurology (K.C.G.), St. Elizabeth's Medical Centre, Tufts University, School of Medicine, Boston, MA; Laboratory of Gut-Brain Signaling (Z.I.); Laboratory Sciences and Services Division (LSSD) (Z.I.), icddr,b; National Institute of Neurosciences and Hospital (Q.D.M.), Dhaka, Bangladesh; Department of Neurology (S.H.S.), Odense University Hospital and University of Southern Denmark; Department of Neurology (S. Kusunoki), Kindai University Faculty of Medicine, Osaka-Sayama City, Japan; Department of Neurology (C.C.), Neuromuscular Unit, Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Division of Neurology (K.B.), Department of Medicine, Groote Schuur Hospital, University of Cape Town, South Africa; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, United Kingdom; Department of Neurology (B.v.d.B., H.K.), Franciscus Gasthuis & Vlietland (location: Vlietland Hospital), Schiedam; Department of Neurology (S. Arends, P.W.W.), Haga Hospital, Den Haag; Department of Neurology (L.W.G.L., L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (S. Kuwabara), Chiba University, Chuo-ku, Japan; Department of Neurology (P.V.d.B.), Neuromuscular Reference Centre, University Hospital Saint-Luc, University of Louvain, Brussels, Belgium; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Dysimmune Neuropathies Unit (G.A.M.), Department of Systems Medicine, Tor Vergata University Hospital, Rome, Italy; Department of Medicine (N.S.), University of Malaya, Kuala Lumpur, Malaysia; Department of Neurology (G.G.), University Hospital of Modena, Italy; Department of Clinical Neurophysiology (Y.P.), Reference Centre for NMD, CHU Nantes, Nantes, France; Department of Neurology (J.B.), Saarland University Medical School, Homburg (previous hospital), and MVZ Pfalzklinikum (J.B.), Kusel, Germany (current hospital); Department of Neurology (K.K., R.P.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (C.M.), Hospital Británico, Buenos Aires, Argentina; Department of Neurology (M.J.S.T.), Hospital Marques de Valdecilla, Santander; Department of Neurology (L.Q., L.M.-A.), Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, CIBERER and ERN-NMD, Spain; Department of Neurology (Y.W.), Affiliated Hospital of Jining Medical University, Shandong Province, China; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Research Hospital, Milan University, Italy; Nuffield Department of Clinical Neurosciences (S.R.), University of Oxford and Oxford University Hospitals NHS Foundation Trust, United Kingdom; Department of Neurosciences, Ophthalmology, Rehabilitation, Genetics and Maternal Sciences (A.S.), University of Genova, and IRCCS San Martino Hospital (A.S.), Genova, Italy; Department of Neurology (J.P.), Hospital Clínico de Santiago, Travesia Choupana, Santiago de Compostela (A Coruña), Spain; Department of Neurology (F.H.V.), Franciscus Gasthuis & Vlietland (location: Franciscus Gasthuis), Rotterdam, the Netherlands; Department of Neurology (W.W., N.K.), University of Vermont Medical Centre, Burlington; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (V.G., B.S.), Montefiore Medical Center, Bronx, NY; Department of Neurology (G.C.), University Milano-Bicocca, Monza, Italy; Department of Neurology (G.G.-G.), Hospital Universitario Infanta Sofía, San Sebastián de los Reyes, Spain; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, FLENI, Buenos Aires, Argentina; Department of Neurology (H.D.K.), University Health Network, University of Toronto, Ontario, Canada; Department of Neurology (E.D.), University Hospital of Larissa, Greece; Department of Neurology (S. Attarian), Reference Centre for NMD, CHU Timone ERN NMD, Marseille, France; Department of Neurology (A.J.v.d.K., F.E.), Amsterdam University Medical Centre, University of Amsterdam, Neuroscience Institute; Department of Neurology (J.P.A.S.), Maasstad Hospital, Rotterdam; Department of Neurology (H.J.G.), Reinier de Graaf Hospital, Reinier de Graafweg, Delft, the Netherlands; Department of Neurology (R.D.M.H.), King's College Hospital, Denmark Hill, London; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, United Kingdom; Department of Neurology (K.A.S.), University of Texas Health Science Centre at Houston; Department of Biology (N.K., S. Karafiath), Utah Valley University, Orem; Department of Neurology (M.V.), Lahey Hospital and Medical Center, Tufts University School of Medicine, Burlington, MA; Department of Neurology, Mental Health and Sensory Organs (NESMOS) (G.A.), Faculty of Medicine and Psychology, University of Rome 'Sapienza,' Sant' Andrea Hospital, Italy; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Alberta, Canada; Department of Neurology (C.F.), Maastricht University Medical Centre, the Netherlands; Department of Neurology (M.B.), Leeds Teaching Hospitals; Department of Neurology (R.C.R.), Addenbrooke's Hospital, Cambridge, United Kingdom; Department of Neurology (N.J.S.), University at Buffalo Jacobs School of Medicine and Biomedical Sciences, NY; Department of Neurology (R.F.), Scientific Institute San Raffaele, Milano, Italy; Department of Neurology (G.W.v.D.), Canisius Wilhelmina Hospital, Nijmegen; Department of Neurology (M.P.J.G.), Jeroen Bosch Hospital, 's-Hertogenbosch; Department of Neurology (J.V.), Leiden University Medical Centre; and Department of Immunology (B.C.J.), Erasmus MC, University Medical Centre Rotterdam, the Netherlands.; Nobile-Orazio E; From the Department of Neurology (H.A.-H., H.A., T.H.), Aarhus University Hospital, Denmark; Department of Neurology (A.Y.D., B.v.d.B., C.V., J.R., S.E.L., S. Arends, L.W.G.L., K.K., B.C.J.), Erasmus MC, University Medical Centre Rotterdam, the Netherlands; Department of Neurology (A.M.S.), University of Michigan School of Medicine, Ann Arbor; Department of Neurology (S.A.Z.), University of Pittsburgh Medical Center, PA; Department of Neurology (H.J.W., A.D.), College of Medical, Veterinary and Life Sciences, University of Glasgow, United Kingdom; Department of Neurology (D.R.C.), Johns Hopkins University School of Medicine, Baltimore, MD; Department of Neurology (K.C.G.), St. Elizabeth's Medical Centre, Tufts University, School of Medicine, Boston, MA; Laboratory of Gut-Brain Signaling (Z.I.); Laboratory Sciences and Services Division (LSSD) (Z.I.), icddr,b; National Institute of Neurosciences and Hospital (Q.D.M.), Dhaka, Bangladesh; Department of Neurology (S.H.S.), Odense University Hospital and University of Southern Denmark; Department of Neurology (S. Kusunoki), Kindai University Faculty of Medicine, Osaka-Sayama City, Japan; Department of Neurology (C.C.), Neuromuscular Unit, Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Division of Neurology (K.B.), Department of Medicine, Groote Schuur Hospital, University of Cape Town, South Africa; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, United Kingdom; Department of Neurology (B.v.d.B., H.K.), Franciscus Gasthuis & Vlietland (location: Vlietland Hospital), Schiedam; Department of Neurology (S. Arends, P.W.W.), Haga Hospital, Den Haag; Department of Neurology (L.W.G.L., L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (S. Kuwabara), Chiba University, Chuo-ku, Japan; Department of Neurology (P.V.d.B.), Neuromuscular Reference Centre, University Hospital Saint-Luc, University of Louvain, Brussels, Belgium; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Dysimmune Neuropathies Unit (G.A.M.), Department of Systems Medicine, Tor Vergata University Hospital, Rome, Italy; Department of Medicine (N.S.), University of Malaya, Kuala Lumpur, Malaysia; Department of Neurology (G.G.), University Hospital of Modena, Italy; Department of Clinical Neurophysiology (Y.P.), Reference Centre for NMD, CHU Nantes, Nantes, France; Department of Neurology (J.B.), Saarland University Medical School, Homburg (previous hospital), and MVZ Pfalzklinikum (J.B.), Kusel, Germany (current hospital); Department of Neurology (K.K., R.P.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (C.M.), Hospital Británico, Buenos Aires, Argentina; Department of Neurology (M.J.S.T.), Hospital Marques de Valdecilla, Santander; Department of Neurology (L.Q., L.M.-A.), Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, CIBERER and ERN-NMD, Spain; Department of Neurology (Y.W.), Affiliated Hospital of Jining Medical University, Shandong Province, China; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Research Hospital, Milan University, Italy; Nuffield Department of Clinical Neurosciences (S.R.), University of Oxford and Oxford University Hospitals NHS Foundation Trust, United Kingdom; Department of Neurosciences, Ophthalmology, Rehabilitation, Genetics and Maternal Sciences (A.S.), University of Genova, and IRCCS San Martino Hospital (A.S.), Genova, Italy; Department of Neurology (J.P.), Hospital Clínico de Santiago, Travesia Choupana, Santiago de Compostela (A Coruña), Spain; Department of Neurology (F.H.V.), Franciscus Gasthuis & Vlietland (location: Franciscus Gasthuis), Rotterdam, the Netherlands; Department of Neurology (W.W., N.K.), University of Vermont Medical Centre, Burlington; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (V.G., B.S.), Montefiore Medical Center, Bronx, NY; Department of Neurology (G.C.), University Milano-Bicocca, Monza, Italy; Department of Neurology (G.G.-G.), Hospital Universitario Infanta Sofía, San Sebastián de los Reyes, Spain; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, FLENI, Buenos Aires, Argentina; Department of Neurology (H.D.K.), University Health Network, University of Toronto, Ontario, Canada; Department of Neurology (E.D.), University Hospital of Larissa, Greece; Department of Neurology (S. Attarian), Reference Centre for NMD, CHU Timone ERN NMD, Marseille, France; Department of Neurology (A.J.v.d.K., F.E.), Amsterdam University Medical Centre, University of Amsterdam, Neuroscience Institute; Department of Neurology (J.P.A.S.), Maasstad Hospital, Rotterdam; Department of Neurology (H.J.G.), Reinier de Graaf Hospital, Reinier de Graafweg, Delft, the Netherlands; Department of Neurology (R.D.M.H.), King's College Hospital, Denmark Hill, London; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, United Kingdom; Department of Neurology (K.A.S.), University of Texas Health Science Centre at Houston; Department of Biology (N.K., S. Karafiath), Utah Valley University, Orem; Department of Neurology (M.V.), Lahey Hospital and Medical Center, Tufts University School of Medicine, Burlington, MA; Department of Neurology, Mental Health and Sensory Organs (NESMOS) (G.A.), Faculty of Medicine and Psychology, University of Rome 'Sapienza,' Sant' Andrea Hospital, Italy; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Alberta, Canada; Department of Neurology (C.F.), Maastricht University Medical Centre, the Netherlands; Department of Neurology (M.B.), Leeds Teaching Hospitals; Department of Neurology (R.C.R.), Addenbrooke's Hospital, Cambridge, United Kingdom; Department of Neurology (N.J.S.), University at Buffalo Jacobs School of Medicine and Biomedical Sciences, NY; Department of Neurology (R.F.), Scientific Institute San Raffaele, Milano, Italy; Department of Neurology (G.W.v.D.), Canisius Wilhelmina Hospital, Nijmegen; Department of Neurology (M.P.J.G.), Jeroen Bosch Hospital, 's-Hertogenbosch; Department of Neurology (J.V.), Leiden University Medical Centre; and Department of Immunology (B.C.J.), Erasmus MC, University Medical Centre Rotterdam, the Netherlands.; Rinaldi S; From the Department of Neurology (H.A.-H., H.A., T.H.), Aarhus University Hospital, Denmark; Department of Neurology (A.Y.D., B.v.d.B., C.V., J.R., S.E.L., S. Arends, L.W.G.L., K.K., B.C.J.), Erasmus MC, University Medical Centre Rotterdam, the Netherlands; Department of Neurology (A.M.S.), University of Michigan School of Medicine, Ann Arbor; Department of Neurology (S.A.Z.), University of Pittsburgh Medical Center, PA; Department of Neurology (H.J.W., A.D.), College of Medical, Veterinary and Life Sciences, University of Glasgow, United Kingdom; Department of Neurology (D.R.C.), Johns Hopkins University School of Medicine, Baltimore, MD; Department of Neurology (K.C.G.), St. Elizabeth's Medical Centre, Tufts University, School of Medicine, Boston, MA; Laboratory of Gut-Brain Signaling (Z.I.); Laboratory Sciences and Services Division (LSSD) (Z.I.), icddr,b; National Institute of Neurosciences and Hospital (Q.D.M.), Dhaka, Bangladesh; Department of Neurology (S.H.S.), Odense University Hospital and University of Southern Denmark; Department of Neurology (S. Kusunoki), Kindai University Faculty of Medicine, Osaka-Sayama City, Japan; Department of Neurology (C.C.), Neuromuscular Unit, Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Division of Neurology (K.B.), Department of Medicine, Groote Schuur Hospital, University of Cape Town, South Africa; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, United Kingdom; Department of Neurology (B.v.d.B., H.K.), Franciscus Gasthuis & Vlietland (location: Vlietland Hospital), Schiedam; Department of Neurology (S. Arends, P.W.W.), Haga Hospital, Den Haag; Department of Neurology (L.W.G.L., L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (S. Kuwabara), Chiba University, Chuo-ku, Japan; Department of Neurology (P.V.d.B.), Neuromuscular Reference Centre, University Hospital Saint-Luc, University of Louvain, Brussels, Belgium; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Dysimmune Neuropathies Unit (G.A.M.), Department of Systems Medicine, Tor Vergata University Hospital, Rome, Italy; Department of Medicine (N.S.), University of Malaya, Kuala Lumpur, Malaysia; Department of Neurology (G.G.), University Hospital of Modena, Italy; Department of Clinical Neurophysiology (Y.P.), Reference Centre for NMD, CHU Nantes, Nantes, France; Department of Neurology (J.B.), Saarland University Medical School, Homburg (previous hospital), and MVZ Pfalzklinikum (J.B.), Kusel, Germany (current hospital); Department of Neurology (K.K., R.P.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (C.M.), Hospital Británico, Buenos Aires, Argentina; Department of Neurology (M.J.S.T.), Hospital Marques de Valdecilla, Santander; Department of Neurology (L.Q., L.M.-A.), Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, CIBERER and ERN-NMD, Spain; Department of Neurology (Y.W.), Affiliated Hospital of Jining Medical University, Shandong Province, China; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Research Hospital, Milan University, Italy; Nuffield Department of Clinical Neurosciences (S.R.), University of Oxford and Oxford University Hospitals NHS Foundation Trust, United Kingdom; Department of Neurosciences, Ophthalmology, Rehabilitation, Genetics and Maternal Sciences (A.S.), University of Genova, and IRCCS San Martino Hospital (A.S.), Genova, Italy; Department of Neurology (J.P.), Hospital Clínico de Santiago, Travesia Choupana, Santiago de Compostela (A Coruña), Spain; Department of Neurology (F.H.V.), Franciscus Gasthuis & Vlietland (location: Franciscus Gasthuis), Rotterdam, the Netherlands; Department of Neurology (W.W., N.K.), University of Vermont Medical Centre, Burlington; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (V.G., B.S.), Montefiore Medical Center, Bronx, NY; Department of Neurology (G.C.), University Milano-Bicocca, Monza, Italy; Department of Neurology (G.G.-G.), Hospital Universitario Infanta Sofía, San Sebastián de los Reyes, Spain; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, FLENI, Buenos Aires, Argentina; Department of Neurology (H.D.K.), University Health Network, University of Toronto, Ontario, Canada; Department of Neurology (E.D.), University Hospital of Larissa, Greece; Department of Neurology (S. Attarian), Reference Centre for NMD, CHU Timone ERN NMD, Marseille, France; Department of Neurology (A.J.v.d.K., F.E.), Amsterdam University Medical Centre, University of Amsterdam, Neuroscience Institute; Department of Neurology (J.P.A.S.), Maasstad Hospital, Rotterdam; Department of Neurology (H.J.G.), Reinier de Graaf Hospital, Reinier de Graafweg, Delft, the Netherlands; Department of Neurology (R.D.M.H.), King's College Hospital, Denmark Hill, London; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, United Kingdom; Department of Neurology (K.A.S.), University of Texas Health Science Centre at Houston; Department of Biology (N.K., S. Karafiath), Utah Valley University, Orem; Department of Neurology (M.V.), Lahey Hospital and Medical Center, Tufts University School of Medicine, Burlington, MA; Department of Neurology, Mental Health and Sensory Organs (NESMOS) (G.A.), Faculty of Medicine and Psychology, University of Rome 'Sapienza,' Sant' Andrea Hospital, Italy; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Alberta, Canada; Department of Neurology (C.F.), Maastricht University Medical Centre, the Netherlands; Department of Neurology (M.B.), Leeds Teaching Hospitals; Department of Neurology (R.C.R.), Addenbrooke's Hospital, Cambridge, United Kingdom; Department of Neurology (N.J.S.), University at Buffalo Jacobs School of Medicine and Biomedical Sciences, NY; Department of Neurology (R.F.), Scientific Institute San Raffaele, Milano, Italy; Department of Neurology (G.W.v.D.), Canisius Wilhelmina Hospital, Nijmegen; Department of Neurology (M.P.J.G.), Jeroen Bosch Hospital, 's-Hertogenbosch; Department of Neurology (J.V.), Leiden University Medical Centre; and Department of Immunology (B.C.J.), Erasmus MC, University Medical Centre Rotterdam, the Netherlands.; Schenone A; From the Department of Neurology (H.A.-H., H.A., T.H.), Aarhus University Hospital, Denmark; Department of Neurology (A.Y.D., B.v.d.B., C.V., J.R., S.E.L., S. Arends, L.W.G.L., K.K., B.C.J.), Erasmus MC, University Medical Centre Rotterdam, the Netherlands; Department of Neurology (A.M.S.), University of Michigan School of Medicine, Ann Arbor; Department of Neurology (S.A.Z.), University of Pittsburgh Medical Center, PA; Department of Neurology (H.J.W., A.D.), College of Medical, Veterinary and Life Sciences, University of Glasgow, United Kingdom; Department of Neurology (D.R.C.), Johns Hopkins University School of Medicine, Baltimore, MD; Department of Neurology (K.C.G.), St. Elizabeth's Medical Centre, Tufts University, School of Medicine, Boston, MA; Laboratory of Gut-Brain Signaling (Z.I.); Laboratory Sciences and Services Division (LSSD) (Z.I.), icddr,b; National Institute of Neurosciences and Hospital (Q.D.M.), Dhaka, Bangladesh; Department of Neurology (S.H.S.), Odense University Hospital and University of Southern Denmark; Department of Neurology (S. Kusunoki), Kindai University Faculty of Medicine, Osaka-Sayama City, Japan; Department of Neurology (C.C.), Neuromuscular Unit, Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Division of Neurology (K.B.), Department of Medicine, Groote Schuur Hospital, University of Cape Town, South Africa; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, United Kingdom; Department of Neurology (B.v.d.B., H.K.), Franciscus Gasthuis & Vlietland (location: Vlietland Hospital), Schiedam; Department of Neurology (S. Arends, P.W.W.), Haga Hospital, Den Haag; Department of Neurology (L.W.G.L., L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (S. Kuwabara), Chiba University, Chuo-ku, Japan; Department of Neurology (P.V.d.B.), Neuromuscular Reference Centre, University Hospital Saint-Luc, University of Louvain, Brussels, Belgium; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Dysimmune Neuropathies Unit (G.A.M.), Department of Systems Medicine, Tor Vergata University Hospital, Rome, Italy; Department of Medicine (N.S.), University of Malaya, Kuala Lumpur, Malaysia; Department of Neurology (G.G.), University Hospital of Modena, Italy; Department of Clinical Neurophysiology (Y.P.), Reference Centre for NMD, CHU Nantes, Nantes, France; Department of Neurology (J.B.), Saarland University Medical School, Homburg (previous hospital), and MVZ Pfalzklinikum (J.B.), Kusel, Germany (current hospital); Department of Neurology (K.K., R.P.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (C.M.), Hospital Británico, Buenos Aires, Argentina; Department of Neurology (M.J.S.T.), Hospital Marques de Valdecilla, Santander; Department of Neurology (L.Q., L.M.-A.), Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, CIBERER and ERN-NMD, Spain; Department of Neurology (Y.W.), Affiliated Hospital of Jining Medical University, Shandong Province, China; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Research Hospital, Milan University, Italy; Nuffield Department of Clinical Neurosciences (S.R.), University of Oxford and Oxford University Hospitals NHS Foundation Trust, United Kingdom; Department of Neurosciences, Ophthalmology, Rehabilitation, Genetics and Maternal Sciences (A.S.), University of Genova, and IRCCS San Martino Hospital (A.S.), Genova, Italy; Department of Neurology (J.P.), Hospital Clínico de Santiago, Travesia Choupana, Santiago de Compostela (A Coruña), Spain; Department of Neurology (F.H.V.), Franciscus Gasthuis & Vlietland (location: Franciscus Gasthuis), Rotterdam, the Netherlands; Department of Neurology (W.W., N.K.), University of Vermont Medical Centre, Burlington; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (V.G., B.S.), Montefiore Medical Center, Bronx, NY; Department of Neurology (G.C.), University Milano-Bicocca, Monza, Italy; Department of Neurology (G.G.-G.), Hospital Universitario Infanta Sofía, San Sebastián de los Reyes, Spain; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, FLENI, Buenos Aires, Argentina; Department of Neurology (H.D.K.), University Health Network, University of Toronto, Ontario, Canada; Department of Neurology (E.D.), University Hospital of Larissa, Greece; Department of Neurology (S. Attarian), Reference Centre for NMD, CHU Timone ERN NMD, Marseille, France; Department of Neurology (A.J.v.d.K., F.E.), Amsterdam University Medical Centre, University of Amsterdam, Neuroscience Institute; Department of Neurology (J.P.A.S.), Maasstad Hospital, Rotterdam; Department of Neurology (H.J.G.), Reinier de Graaf Hospital, Reinier de Graafweg, Delft, the Netherlands; Department of Neurology (R.D.M.H.), King's College Hospital, Denmark Hill, London; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, United Kingdom; Department of Neurology (K.A.S.), University of Texas Health Science Centre at Houston; Department of Biology (N.K., S. Karafiath), Utah Valley University, Orem; Department of Neurology (M.V.), Lahey Hospital and Medical Center, Tufts University School of Medicine, Burlington, MA; Department of Neurology, Mental Health and Sensory Organs (NESMOS) (G.A.), Faculty of Medicine and Psychology, University of Rome 'Sapienza,' Sant' Andrea Hospital, Italy; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Alberta, Canada; Department of Neurology (C.F.), Maastricht University Medical Centre, the Netherlands; Department of Neurology (M.B.), Leeds Teaching Hospitals; Department of Neurology (R.C.R.), Addenbrooke's Hospital, Cambridge, United Kingdom; Department of Neurology (N.J.S.), University at Buffalo Jacobs School of Medicine and Biomedical Sciences, NY; Department of Neurology (R.F.), Scientific Institute San Raffaele, Milano, Italy; Department of Neurology (G.W.v.D.), Canisius Wilhelmina Hospital, Nijmegen; Department of Neurology (M.P.J.G.), Jeroen Bosch Hospital, 's-Hertogenbosch; Department of Neurology (J.V.), Leiden University Medical Centre; and Department of Immunology (B.C.J.), Erasmus MC, University Medical Centre Rotterdam, the Netherlands.; Pardo J; From the Department of Neurology (H.A.-H., H.A., T.H.), Aarhus University Hospital, Denmark; Department of Neurology (A.Y.D., B.v.d.B., C.V., J.R., S.E.L., S. Arends, L.W.G.L., K.K., B.C.J.), Erasmus MC, University Medical Centre Rotterdam, the Netherlands; Department of Neurology (A.M.S.), University of Michigan School of Medicine, Ann Arbor; Department of Neurology (S.A.Z.), University of Pittsburgh Medical Center, PA; Department of Neurology (H.J.W., A.D.), College of Medical, Veterinary and Life Sciences, University of Glasgow, United Kingdom; Department of Neurology (D.R.C.), Johns Hopkins University School of Medicine, Baltimore, MD; Department of Neurology (K.C.G.), St. Elizabeth's Medical Centre, Tufts University, School of Medicine, Boston, MA; Laboratory of Gut-Brain Signaling (Z.I.); Laboratory Sciences and Services Division (LSSD) (Z.I.), icddr,b; National Institute of Neurosciences and Hospital (Q.D.M.), Dhaka, Bangladesh; Department of Neurology (S.H.S.), Odense University Hospital and University of Southern Denmark; Department of Neurology (S. Kusunoki), Kindai University Faculty of Medicine, Osaka-Sayama City, Japan; Department of Neurology (C.C.), Neuromuscular Unit, Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Division of Neurology (K.B.), Department of Medicine, Groote Schuur Hospital, University of Cape Town, South Africa; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, United Kingdom; Department of Neurology (B.v.d.B., H.K.), Franciscus Gasthuis & Vlietland (location: Vlietland Hospital), Schiedam; Department of Neurology (S. Arends, P.W.W.), Haga Hospital, Den Haag; Department of Neurology (L.W.G.L., L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (S. Kuwabara), Chiba University, Chuo-ku, Japan; Department of Neurology (P.V.d.B.), Neuromuscular Reference Centre, University Hospital Saint-Luc, University of Louvain, Brussels, Belgium; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Dysimmune Neuropathies Unit (G.A.M.), Department of Systems Medicine, Tor Vergata University Hospital, Rome, Italy; Department of Medicine (N.S.), University of Malaya, Kuala Lumpur, Malaysia; Department of Neurology (G.G.), University Hospital of Modena, Italy; Department of Clinical Neurophysiology (Y.P.), Reference Centre for NMD, CHU Nantes, Nantes, France; Department of Neurology (J.B.), Saarland University Medical School, Homburg (previous hospital), and MVZ Pfalzklinikum (J.B.), Kusel, Germany (current hospital); Department of Neurology (K.K., R.P.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (C.M.), Hospital Británico, Buenos Aires, Argentina; Department of Neurology (M.J.S.T.), Hospital Marques de Valdecilla, Santander; Department of Neurology (L.Q., L.M.-A.), Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, CIBERER and ERN-NMD, Spain; Department of Neurology (Y.W.), Affiliated Hospital of Jining Medical University, Shandong Province, China; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Research Hospital, Milan University, Italy; Nuffield Department of Clinical Neurosciences (S.R.), University of Oxford and Oxford University Hospitals NHS Foundation Trust, United Kingdom; Department of Neurosciences, Ophthalmology, Rehabilitation, Genetics and Maternal Sciences (A.S.), University of Genova, and IRCCS San Martino Hospital (A.S.), Genova, Italy; Department of Neurology (J.P.), Hospital Clínico de Santiago, Travesia Choupana, Santiago de Compostela (A Coruña), Spain; Department of Neurology (F.H.V.), Franciscus Gasthuis & Vlietland (location: Franciscus Gasthuis), Rotterdam, the Netherlands; Department of Neurology (W.W., N.K.), University of Vermont Medical Centre, Burlington; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (V.G., B.S.), Montefiore Medical Center, Bronx, NY; Department of Neurology (G.C.), University Milano-Bicocca, Monza, Italy; Department of Neurology (G.G.-G.), Hospital Universitario Infanta Sofía, San Sebastián de los Reyes, Spain; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, FLENI, Buenos Aires, Argentina; Department of Neurology (H.D.K.), University Health Network, University of Toronto, Ontario, Canada; Department of Neurology (E.D.), University Hospital of Larissa, Greece; Department of Neurology (S. Attarian), Reference Centre for NMD, CHU Timone ERN NMD, Marseille, France; Department of Neurology (A.J.v.d.K., F.E.), Amsterdam University Medical Centre, University of Amsterdam, Neuroscience Institute; Department of Neurology (J.P.A.S.), Maasstad Hospital, Rotterdam; Department of Neurology (H.J.G.), Reinier de Graaf Hospital, Reinier de Graafweg, Delft, the Netherlands; Department of Neurology (R.D.M.H.), King's College Hospital, Denmark Hill, London; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, United Kingdom; Department of Neurology (K.A.S.), University of Texas Health Science Centre at Houston; Department of Biology (N.K., S. Karafiath), Utah Valley University, Orem; Department of Neurology (M.V.), Lahey Hospital and Medical Center, Tufts University School of Medicine, Burlington, MA; Department of Neurology, Mental Health and Sensory Organs (NESMOS) (G.A.), Faculty of Medicine and Psychology, University of Rome 'Sapienza,' Sant' Andrea Hospital, Italy; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Alberta, Canada; Department of Neurology (C.F.), Maastricht University Medical Centre, the Netherlands; Department of Neurology (M.B.), Leeds Teaching Hospitals; Department of Neurology (R.C.R.), Addenbrooke's Hospital, Cambridge, United Kingdom; Department of Neurology (N.J.S.), University at Buffalo Jacobs School of Medicine and Biomedical Sciences, NY; Department of Neurology (R.F.), Scientific Institute San Raffaele, Milano, Italy; Department of Neurology (G.W.v.D.), Canisius Wilhelmina Hospital, Nijmegen; Department of Neurology (M.P.J.G.), Jeroen Bosch Hospital, 's-Hertogenbosch; Department of Neurology (J.V.), Leiden University Medical Centre; and Department of Immunology (B.C.J.), Erasmus MC, University Medical Centre Rotterdam, the Netherlands.; Vermeij FH; From the Department of Neurology (H.A.-H., H.A., T.H.), Aarhus University Hospital, Denmark; Department of Neurology (A.Y.D., B.v.d.B., C.V., J.R., S.E.L., S. Arends, L.W.G.L., K.K., B.C.J.), Erasmus MC, University Medical Centre Rotterdam, the Netherlands; Department of Neurology (A.M.S.), University of Michigan School of Medicine, Ann Arbor; Department of Neurology (S.A.Z.), University of Pittsburgh Medical Center, PA; Department of Neurology (H.J.W., A.D.), College of Medical, Veterinary and Life Sciences, University of Glasgow, United Kingdom; Department of Neurology (D.R.C.), Johns Hopkins University School of Medicine, Baltimore, MD; Department of Neurology (K.C.G.), St. Elizabeth's Medical Centre, Tufts University, School of Medicine, Boston, MA; Laboratory of Gut-Brain Signaling (Z.I.); Laboratory Sciences and Services Division (LSSD) (Z.I.), icddr,b; National Institute of Neurosciences and Hospital (Q.D.M.), Dhaka, Bangladesh; Department of Neurology (S.H.S.), Odense University Hospital and University of Southern Denmark; Department of Neurology (S. Kusunoki), Kindai University Faculty of Medicine, Osaka-Sayama City, Japan; Department of Neurology (C.C.), Neuromuscular Unit, Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Division of Neurology (K.B.), Department of Medicine, Groote Schuur Hospital, University of Cape Town, South Africa; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, United Kingdom; Department of Neurology (B.v.d.B., H.K.), Franciscus Gasthuis & Vlietland (location: Vlietland Hospital), Schiedam; Department of Neurology (S. Arends, P.W.W.), Haga Hospital, Den Haag; Department of Neurology (L.W.G.L., L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (S. Kuwabara), Chiba University, Chuo-ku, Japan; Department of Neurology (P.V.d.B.), Neuromuscular Reference Centre, University Hospital Saint-Luc, University of Louvain, Brussels, Belgium; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Dysimmune Neuropathies Unit (G.A.M.), Department of Systems Medicine, Tor Vergata University Hospital, Rome, Italy; Department of Medicine (N.S.), University of Malaya, Kuala Lumpur, Malaysia; Department of Neurology (G.G.), University Hospital of Modena, Italy; Department of Clinical Neurophysiology (Y.P.), Reference Centre for NMD, CHU Nantes, Nantes, France; Department of Neurology (J.B.), Saarland University Medical School, Homburg (previous hospital), and MVZ Pfalzklinikum (J.B.), Kusel, Germany (current hospital); Department of Neurology (K.K., R.P.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (C.M.), Hospital Británico, Buenos Aires, Argentina; Department of Neurology (M.J.S.T.), Hospital Marques de Valdecilla, Santander; Department of Neurology (L.Q., L.M.-A.), Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, CIBERER and ERN-NMD, Spain; Department of Neurology (Y.W.), Affiliated Hospital of Jining Medical University, Shandong Province, China; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Research Hospital, Milan University, Italy; Nuffield Department of Clinical Neurosciences (S.R.), University of Oxford and Oxford University Hospitals NHS Foundation Trust, United Kingdom; Department of Neurosciences, Ophthalmology, Rehabilitation, Genetics and Maternal Sciences (A.S.), University of Genova, and IRCCS San Martino Hospital (A.S.), Genova, Italy; Department of Neurology (J.P.), Hospital Clínico de Santiago, Travesia Choupana, Santiago de Compostela (A Coruña), Spain; Department of Neurology (F.H.V.), Franciscus Gasthuis & Vlietland (location: Franciscus Gasthuis), Rotterdam, the Netherlands; Department of Neurology (W.W., N.K.), University of Vermont Medical Centre, Burlington; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (V.G., B.S.), Montefiore Medical Center, Bronx, NY; Department of Neurology (G.C.), University Milano-Bicocca, Monza, Italy; Department of Neurology (G.G.-G.), Hospital Universitario Infanta Sofía, San Sebastián de los Reyes, Spain; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, FLENI, Buenos Aires, Argentina; Department of Neurology (H.D.K.), University Health Network, University of Toronto, Ontario, Canada; Department of Neurology (E.D.), University Hospital of Larissa, Greece; Department of Neurology (S. Attarian), Reference Centre for NMD, CHU Timone ERN NMD, Marseille, France; Department of Neurology (A.J.v.d.K., F.E.), Amsterdam University Medical Centre, University of Amsterdam, Neuroscience Institute; Department of Neurology (J.P.A.S.), Maasstad Hospital, Rotterdam; Department of Neurology (H.J.G.), Reinier de Graaf Hospital, Reinier de Graafweg, Delft, the Netherlands; Department of Neurology (R.D.M.H.), King's College Hospital, Denmark Hill, London; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, United Kingdom; Department of Neurology (K.A.S.), University of Texas Health Science Centre at Houston; Department of Biology (N.K., S. Karafiath), Utah Valley University, Orem; Department of Neurology (M.V.), Lahey Hospital and Medical Center, Tufts University School of Medicine, Burlington, MA; Department of Neurology, Mental Health and Sensory Organs (NESMOS) (G.A.), Faculty of Medicine and Psychology, University of Rome 'Sapienza,' Sant' Andrea Hospital, Italy; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Alberta, Canada; Department of Neurology (C.F.), Maastricht University Medical Centre, the Netherlands; Department of Neurology (M.B.), Leeds Teaching Hospitals; Department of Neurology (R.C.R.), Addenbrooke's Hospital, Cambridge, United Kingdom; Department of Neurology (N.J.S.), University at Buffalo Jacobs School of Medicine and Biomedical Sciences, NY; Department of Neurology (R.F.), Scientific Institute San Raffaele, Milano, Italy; Department of Neurology (G.W.v.D.), Canisius Wilhelmina Hospital, Nijmegen; Department of Neurology (M.P.J.G.), Jeroen Bosch Hospital, 's-Hertogenbosch; Department of Neurology (J.V.), Leiden University Medical Centre; and Department of Immunology (B.C.J.), Erasmus MC, University Medical Centre Rotterdam, the Netherlands.; Waheed W; From the Department of Neurology (H.A.-H., H.A., T.H.), Aarhus University Hospital, Denmark; Department of Neurology (A.Y.D., B.v.d.B., C.V., J.R., S.E.L., S. Arends, L.W.G.L., K.K., B.C.J.), Erasmus MC, University Medical Centre Rotterdam, the Netherlands; Department of Neurology (A.M.S.), University of Michigan School of Medicine, Ann Arbor; Department of Neurology (S.A.Z.), University of Pittsburgh Medical Center, PA; Department of Neurology (H.J.W., A.D.), College of Medical, Veterinary and Life Sciences, University of Glasgow, United Kingdom; Department of Neurology (D.R.C.), Johns Hopkins University School of Medicine, Baltimore, MD; Department of Neurology (K.C.G.), St. Elizabeth's Medical Centre, Tufts University, School of Medicine, Boston, MA; Laboratory of Gut-Brain Signaling (Z.I.); Laboratory Sciences and Services Division (LSSD) (Z.I.), icddr,b; National Institute of Neurosciences and Hospital (Q.D.M.), Dhaka, Bangladesh; Department of Neurology (S.H.S.), Odense University Hospital and University of Southern Denmark; Department of Neurology (S. Kusunoki), Kindai University Faculty of Medicine, Osaka-Sayama City, Japan; Department of Neurology (C.C.), Neuromuscular Unit, Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Division of Neurology (K.B.), Department of Medicine, Groote Schuur Hospital, University of Cape Town, South Africa; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, United Kingdom; Department of Neurology (B.v.d.B., H.K.), Franciscus Gasthuis & Vlietland (location: Vlietland Hospital), Schiedam; Department of Neurology (S. Arends, P.W.W.), Haga Hospital, Den Haag; Department of Neurology (L.W.G.L., L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (S. Kuwabara), Chiba University, Chuo-ku, Japan; Department of Neurology (P.V.d.B.), Neuromuscular Reference Centre, University Hospital Saint-Luc, University of Louvain, Brussels, Belgium; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Dysimmune Neuropathies Unit (G.A.M.), Department of Systems Medicine, Tor Vergata University Hospital, Rome, Italy; Department of Medicine (N.S.), University of Malaya, Kuala Lumpur, Malaysia; Department of Neurology (G.G.), University Hospital of Modena, Italy; Department of Clinical Neurophysiology (Y.P.), Reference Centre for NMD, CHU Nantes, Nantes, France; Department of Neurology (J.B.), Saarland University Medical School, Homburg (previous hospital), and MVZ Pfalzklinikum (J.B.), Kusel, Germany (current hospital); Department of Neurology (K.K., R.P.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (C.M.), Hospital Británico, Buenos Aires, Argentina; Department of Neurology (M.J.S.T.), Hospital Marques de Valdecilla, Santander; Department of Neurology (L.Q., L.M.-A.), Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, CIBERER and ERN-NMD, Spain; Department of Neurology (Y.W.), Affiliated Hospital of Jining Medical University, Shandong Province, China; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Research Hospital, Milan University, Italy; Nuffield Department of Clinical Neurosciences (S.R.), University of Oxford and Oxford University Hospitals NHS Foundation Trust, United Kingdom; Department of Neurosciences, Ophthalmology, Rehabilitation, Genetics and Maternal Sciences (A.S.), University of Genova, and IRCCS San Martino Hospital (A.S.), Genova, Italy; Department of Neurology (J.P.), Hospital Clínico de Santiago, Travesia Choupana, Santiago de Compostela (A Coruña), Spain; Department of Neurology (F.H.V.), Franciscus Gasthuis & Vlietland (location: Franciscus Gasthuis), Rotterdam, the Netherlands; Department of Neurology (W.W., N.K.), University of Vermont Medical Centre, Burlington; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (V.G., B.S.), Montefiore Medical Center, Bronx, NY; Department of Neurology (G.C.), University Milano-Bicocca, Monza, Italy; Department of Neurology (G.G.-G.), Hospital Universitario Infanta Sofía, San Sebastián de los Reyes, Spain; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, FLENI, Buenos Aires, Argentina; Department of Neurology (H.D.K.), University Health Network, University of Toronto, Ontario, Canada; Department of Neurology (E.D.), University Hospital of Larissa, Greece; Department of Neurology (S. Attarian), Reference Centre for NMD, CHU Timone ERN NMD, Marseille, France; Department of Neurology (A.J.v.d.K., F.E.), Amsterdam University Medical Centre, University of Amsterdam, Neuroscience Institute; Department of Neurology (J.P.A.S.), Maasstad Hospital, Rotterdam; Department of Neurology (H.J.G.), Reinier de Graaf Hospital, Reinier de Graafweg, Delft, the Netherlands; Department of Neurology (R.D.M.H.), King's College Hospital, Denmark Hill, London; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, United Kingdom; Department of Neurology (K.A.S.), University of Texas Health Science Centre at Houston; Department of Biology (N.K., S. Karafiath), Utah Valley University, Orem; Department of Neurology (M.V.), Lahey Hospital and Medical Center, Tufts University School of Medicine, Burlington, MA; Department of Neurology, Mental Health and Sensory Organs (NESMOS) (G.A.), Faculty of Medicine and Psychology, University of Rome 'Sapienza,' Sant' Andrea Hospital, Italy; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Alberta, Canada; Department of Neurology (C.F.), Maastricht University Medical Centre, the Netherlands; Department of Neurology (M.B.), Leeds Teaching Hospitals; Department of Neurology (R.C.R.), Addenbrooke's Hospital, Cambridge, United Kingdom; Department of Neurology (N.J.S.), University at Buffalo Jacobs School of Medicine and Biomedical Sciences, NY; Department of Neurology (R.F.), Scientific Institute San Raffaele, Milano, Italy; Department of Neurology (G.W.v.D.), Canisius Wilhelmina Hospital, Nijmegen; Department of Neurology (M.P.J.G.), Jeroen Bosch Hospital, 's-Hertogenbosch; Department of Neurology (J.V.), Leiden University Medical Centre; and Department of Immunology (B.C.J.), Erasmus MC, University Medical Centre Rotterdam, the Netherlands.; Lehmann HC; From the Department of Neurology (H.A.-H., H.A., T.H.), Aarhus University Hospital, Denmark; Department of Neurology (A.Y.D., B.v.d.B., C.V., J.R., S.E.L., S. Arends, L.W.G.L., K.K., B.C.J.), Erasmus MC, University Medical Centre Rotterdam, the Netherlands; Department of Neurology (A.M.S.), University of Michigan School of Medicine, Ann Arbor; Department of Neurology (S.A.Z.), University of Pittsburgh Medical Center, PA; Department of Neurology (H.J.W., A.D.), College of Medical, Veterinary and Life Sciences, University of Glasgow, United Kingdom; Department of Neurology (D.R.C.), Johns Hopkins University School of Medicine, Baltimore, MD; Department of Neurology (K.C.G.), St. Elizabeth's Medical Centre, Tufts University, School of Medicine, Boston, MA; Laboratory of Gut-Brain Signaling (Z.I.); Laboratory Sciences and Services Division (LSSD) (Z.I.), icddr,b; National Institute of Neurosciences and Hospital (Q.D.M.), Dhaka, Bangladesh; Department of Neurology (S.H.S.), Odense University Hospital and University of Southern Denmark; Department of Neurology (S. Kusunoki), Kindai University Faculty of Medicine, Osaka-Sayama City, Japan; Department of Neurology (C.C.), Neuromuscular Unit, Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Division of Neurology (K.B.), Department of Medicine, Groote Schuur Hospital, University of Cape Town, South Africa; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, United Kingdom; Department of Neurology (B.v.d.B., H.K.), Franciscus Gasthuis & Vlietland (location: Vlietland Hospital), Schiedam; Department of Neurology (S. Arends, P.W.W.), Haga Hospital, Den Haag; Department of Neurology (L.W.G.L., L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (S. Kuwabara), Chiba University, Chuo-ku, Japan; Department of Neurology (P.V.d.B.), Neuromuscular Reference Centre, University Hospital Saint-Luc, University of Louvain, Brussels, Belgium; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Dysimmune Neuropathies Unit (G.A.M.), Department of Systems Medicine, Tor Vergata University Hospital, Rome, Italy; Department of Medicine (N.S.), University of Malaya, Kuala Lumpur, Malaysia; Department of Neurology (G.G.), University Hospital of Modena, Italy; Department of Clinical Neurophysiology (Y.P.), Reference Centre for NMD, CHU Nantes, Nantes, France; Department of Neurology (J.B.), Saarland University Medical School, Homburg (previous hospital), and MVZ Pfalzklinikum (J.B.), Kusel, Germany (current hospital); Department of Neurology (K.K., R.P.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (C.M.), Hospital Británico, Buenos Aires, Argentina; Department of Neurology (M.J.S.T.), Hospital Marques de Valdecilla, Santander; Department of Neurology (L.Q., L.M.-A.), Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, CIBERER and ERN-NMD, Spain; Department of Neurology (Y.W.), Affiliated Hospital of Jining Medical University, Shandong Province, China; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Research Hospital, Milan University, Italy; Nuffield Department of Clinical Neurosciences (S.R.), University of Oxford and Oxford University Hospitals NHS Foundation Trust, United Kingdom; Department of Neurosciences, Ophthalmology, Rehabilitation, Genetics and Maternal Sciences (A.S.), University of Genova, and IRCCS San Martino Hospital (A.S.), Genova, Italy; Department of Neurology (J.P.), Hospital Clínico de Santiago, Travesia Choupana, Santiago de Compostela (A Coruña), Spain; Department of Neurology (F.H.V.), Franciscus Gasthuis & Vlietland (location: Franciscus Gasthuis), Rotterdam, the Netherlands; Department of Neurology (W.W., N.K.), University of Vermont Medical Centre, Burlington; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (V.G., B.S.), Montefiore Medical Center, Bronx, NY; Department of Neurology (G.C.), University Milano-Bicocca, Monza, Italy; Department of Neurology (G.G.-G.), Hospital Universitario Infanta Sofía, San Sebastián de los Reyes, Spain; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, FLENI, Buenos Aires, Argentina; Department of Neurology (H.D.K.), University Health Network, University of Toronto, Ontario, Canada; Department of Neurology (E.D.), University Hospital of Larissa, Greece; Department of Neurology (S. Attarian), Reference Centre for NMD, CHU Timone ERN NMD, Marseille, France; Department of Neurology (A.J.v.d.K., F.E.), Amsterdam University Medical Centre, University of Amsterdam, Neuroscience Institute; Department of Neurology (J.P.A.S.), Maasstad Hospital, Rotterdam; Department of Neurology (H.J.G.), Reinier de Graaf Hospital, Reinier de Graafweg, Delft, the Netherlands; Department of Neurology (R.D.M.H.), King's College Hospital, Denmark Hill, London; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, United Kingdom; Department of Neurology (K.A.S.), University of Texas Health Science Centre at Houston; Department of Biology (N.K., S. Karafiath), Utah Valley University, Orem; Department of Neurology (M.V.), Lahey Hospital and Medical Center, Tufts University School of Medicine, Burlington, MA; Department of Neurology, Mental Health and Sensory Organs (NESMOS) (G.A.), Faculty of Medicine and Psychology, University of Rome 'Sapienza,' Sant' Andrea Hospital, Italy; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Alberta, Canada; Department of Neurology (C.F.), Maastricht University Medical Centre, the Netherlands; Department of Neurology (M.B.), Leeds Teaching Hospitals; Department of Neurology (R.C.R.), Addenbrooke's Hospital, Cambridge, United Kingdom; Department of Neurology (N.J.S.), University at Buffalo Jacobs School of Medicine and Biomedical Sciences, NY; Department of Neurology (R.F.), Scientific Institute San Raffaele, Milano, Italy; Department of Neurology (G.W.v.D.), Canisius Wilhelmina Hospital, Nijmegen; Department of Neurology (M.P.J.G.), Jeroen Bosch Hospital, 's-Hertogenbosch; Department of Neurology (J.V.), Leiden University Medical Centre; and Department of Immunology (B.C.J.), Erasmus MC, University Medical Centre Rotterdam, the Netherlands.; Granit V; From the Department of Neurology (H.A.-H., H.A., T.H.), Aarhus University Hospital, Denmark; Department of Neurology (A.Y.D., B.v.d.B., C.V., J.R., S.E.L., S. Arends, L.W.G.L., K.K., B.C.J.), Erasmus MC, University Medical Centre Rotterdam, the Netherlands; Department of Neurology (A.M.S.), University of Michigan School of Medicine, Ann Arbor; Department of Neurology (S.A.Z.), University of Pittsburgh Medical Center, PA; Department of Neurology (H.J.W., A.D.), College of Medical, Veterinary and Life Sciences, University of Glasgow, United Kingdom; Department of Neurology (D.R.C.), Johns Hopkins University School of Medicine, Baltimore, MD; Department of Neurology (K.C.G.), St. Elizabeth's Medical Centre, Tufts University, School of Medicine, Boston, MA; Laboratory of Gut-Brain Signaling (Z.I.); Laboratory Sciences and Services Division (LSSD) (Z.I.), icddr,b; National Institute of Neurosciences and Hospital (Q.D.M.), Dhaka, Bangladesh; Department of Neurology (S.H.S.), Odense University Hospital and University of Southern Denmark; Department of Neurology (S. Kusunoki), Kindai University Faculty of Medicine, Osaka-Sayama City, Japan; Department of Neurology (C.C.), Neuromuscular Unit, Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Division of Neurology (K.B.), Department of Medicine, Groote Schuur Hospital, University of Cape Town, South Africa; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, United Kingdom; Department of Neurology (B.v.d.B., H.K.), Franciscus Gasthuis & Vlietland (location: Vlietland Hospital), Schiedam; Department of Neurology (S. Arends, P.W.W.), Haga Hospital, Den Haag; Department of Neurology (L.W.G.L., L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (S. Kuwabara), Chiba University, Chuo-ku, Japan; Department of Neurology (P.V.d.B.), Neuromuscular Reference Centre, University Hospital Saint-Luc, University of Louvain, Brussels, Belgium; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Dysimmune Neuropathies Unit (G.A.M.), Department of Systems Medicine, Tor Vergata University Hospital, Rome, Italy; Department of Medicine (N.S.), University of Malaya, Kuala Lumpur, Malaysia; Department of Neurology (G.G.), University Hospital of Modena, Italy; Department of Clinical Neurophysiology (Y.P.), Reference Centre for NMD, CHU Nantes, Nantes, France; Department of Neurology (J.B.), Saarland University Medical School, Homburg (previous hospital), and MVZ Pfalzklinikum (J.B.), Kusel, Germany (current hospital); Department of Neurology (K.K., R.P.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (C.M.), Hospital Británico, Buenos Aires, Argentina; Department of Neurology (M.J.S.T.), Hospital Marques de Valdecilla, Santander; Department of Neurology (L.Q., L.M.-A.), Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, CIBERER and ERN-NMD, Spain; Department of Neurology (Y.W.), Affiliated Hospital of Jining Medical University, Shandong Province, China; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Research Hospital, Milan University, Italy; Nuffield Department of Clinical Neurosciences (S.R.), University of Oxford and Oxford University Hospitals NHS Foundation Trust, United Kingdom; Department of Neurosciences, Ophthalmology, Rehabilitation, Genetics and Maternal Sciences (A.S.), University of Genova, and IRCCS San Martino Hospital (A.S.), Genova, Italy; Department of Neurology (J.P.), Hospital Clínico de Santiago, Travesia Choupana, Santiago de Compostela (A Coruña), Spain; Department of Neurology (F.H.V.), Franciscus Gasthuis & Vlietland (location: Franciscus Gasthuis), Rotterdam, the Netherlands; Department of Neurology (W.W., N.K.), University of Vermont Medical Centre, Burlington; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (V.G., B.S.), Montefiore Medical Center, Bronx, NY; Department of Neurology (G.C.), University Milano-Bicocca, Monza, Italy; Department of Neurology (G.G.-G.), Hospital Universitario Infanta Sofía, San Sebastián de los Reyes, Spain; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, FLENI, Buenos Aires, Argentina; Department of Neurology (H.D.K.), University Health Network, University of Toronto, Ontario, Canada; Department of Neurology (E.D.), University Hospital of Larissa, Greece; Department of Neurology (S. Attarian), Reference Centre for NMD, CHU Timone ERN NMD, Marseille, France; Department of Neurology (A.J.v.d.K., F.E.), Amsterdam University Medical Centre, University of Amsterdam, Neuroscience Institute; Department of Neurology (J.P.A.S.), Maasstad Hospital, Rotterdam; Department of Neurology (H.J.G.), Reinier de Graaf Hospital, Reinier de Graafweg, Delft, the Netherlands; Department of Neurology (R.D.M.H.), King's College Hospital, Denmark Hill, London; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, United Kingdom; Department of Neurology (K.A.S.), University of Texas Health Science Centre at Houston; Department of Biology (N.K., S. Karafiath), Utah Valley University, Orem; Department of Neurology (M.V.), Lahey Hospital and Medical Center, Tufts University School of Medicine, Burlington, MA; Department of Neurology, Mental Health and Sensory Organs (NESMOS) (G.A.), Faculty of Medicine and Psychology, University of Rome 'Sapienza,' Sant' Andrea Hospital, Italy; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Alberta, Canada; Department of Neurology (C.F.), Maastricht University Medical Centre, the Netherlands; Department of Neurology (M.B.), Leeds Teaching Hospitals; Department of Neurology (R.C.R.), Addenbrooke's Hospital, Cambridge, United Kingdom; Department of Neurology (N.J.S.), University at Buffalo Jacobs School of Medicine and Biomedical Sciences, NY; Department of Neurology (R.F.), Scientific Institute San Raffaele, Milano, Italy; Department of Neurology (G.W.v.D.), Canisius Wilhelmina Hospital, Nijmegen; Department of Neurology (M.P.J.G.), Jeroen Bosch Hospital, 's-Hertogenbosch; Department of Neurology (J.V.), Leiden University Medical Centre; and Department of Immunology (B.C.J.), Erasmus MC, University Medical Centre Rotterdam, the Netherlands.; Stein B; From the Department of Neurology (H.A.-H., H.A., T.H.), Aarhus University Hospital, Denmark; Department of Neurology (A.Y.D., B.v.d.B., C.V., J.R., S.E.L., S. Arends, L.W.G.L., K.K., B.C.J.), Erasmus MC, University Medical Centre Rotterdam, the Netherlands; Department of Neurology (A.M.S.), University of Michigan School of Medicine, Ann Arbor; Department of Neurology (S.A.Z.), University of Pittsburgh Medical Center, PA; Department of Neurology (H.J.W., A.D.), College of Medical, Veterinary and Life Sciences, University of Glasgow, United Kingdom; Department of Neurology (D.R.C.), Johns Hopkins University School of Medicine, Baltimore, MD; Department of Neurology (K.C.G.), St. Elizabeth's Medical Centre, Tufts University, School of Medicine, Boston, MA; Laboratory of Gut-Brain Signaling (Z.I.); Laboratory Sciences and Services Division (LSSD) (Z.I.), icddr,b; National Institute of Neurosciences and Hospital (Q.D.M.), Dhaka, Bangladesh; Department of Neurology (S.H.S.), Odense University Hospital and University of Southern Denmark; Department of Neurology (S. Kusunoki), Kindai University Faculty of Medicine, Osaka-Sayama City, Japan; Department of Neurology (C.C.), Neuromuscular Unit, Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Division of Neurology (K.B.), Department of Medicine, Groote Schuur Hospital, University of Cape Town, South Africa; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, United Kingdom; Department of Neurology (B.v.d.B., H.K.), Franciscus Gasthuis & Vlietland (location: Vlietland Hospital), Schiedam; Department of Neurology (S. Arends, P.W.W.), Haga Hospital, Den Haag; Department of Neurology (L.W.G.L., L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (S. Kuwabara), Chiba University, Chuo-ku, Japan; Department of Neurology (P.V.d.B.), Neuromuscular Reference Centre, University Hospital Saint-Luc, University of Louvain, Brussels, Belgium; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Dysimmune Neuropathies Unit (G.A.M.), Department of Systems Medicine, Tor Vergata University Hospital, Rome, Italy; Department of Medicine (N.S.), University of Malaya, Kuala Lumpur, Malaysia; Department of Neurology (G.G.), University Hospital of Modena, Italy; Department of Clinical Neurophysiology (Y.P.), Reference Centre for NMD, CHU Nantes, Nantes, France; Department of Neurology (J.B.), Saarland University Medical School, Homburg (previous hospital), and MVZ Pfalzklinikum (J.B.), Kusel, Germany (current hospital); Department of Neurology (K.K., R.P.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (C.M.), Hospital Británico, Buenos Aires, Argentina; Department of Neurology (M.J.S.T.), Hospital Marques de Valdecilla, Santander; Department of Neurology (L.Q., L.M.-A.), Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, CIBERER and ERN-NMD, Spain; Department of Neurology (Y.W.), Affiliated Hospital of Jining Medical University, Shandong Province, China; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Research Hospital, Milan University, Italy; Nuffield Department of Clinical Neurosciences (S.R.), University of Oxford and Oxford University Hospitals NHS Foundation Trust, United Kingdom; Department of Neurosciences, Ophthalmology, Rehabilitation, Genetics and Maternal Sciences (A.S.), University of Genova, and IRCCS San Martino Hospital (A.S.), Genova, Italy; Department of Neurology (J.P.), Hospital Clínico de Santiago, Travesia Choupana, Santiago de Compostela (A Coruña), Spain; Department of Neurology (F.H.V.), Franciscus Gasthuis & Vlietland (location: Franciscus Gasthuis), Rotterdam, the Netherlands; Department of Neurology (W.W., N.K.), University of Vermont Medical Centre, Burlington; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (V.G., B.S.), Montefiore Medical Center, Bronx, NY; Department of Neurology (G.C.), University Milano-Bicocca, Monza, Italy; Department of Neurology (G.G.-G.), Hospital Universitario Infanta Sofía, San Sebastián de los Reyes, Spain; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, FLENI, Buenos Aires, Argentina; Department of Neurology (H.D.K.), University Health Network, University of Toronto, Ontario, Canada; Department of Neurology (E.D.), University Hospital of Larissa, Greece; Department of Neurology (S. Attarian), Reference Centre for NMD, CHU Timone ERN NMD, Marseille, France; Department of Neurology (A.J.v.d.K., F.E.), Amsterdam University Medical Centre, University of Amsterdam, Neuroscience Institute; Department of Neurology (J.P.A.S.), Maasstad Hospital, Rotterdam; Department of Neurology (H.J.G.), Reinier de Graaf Hospital, Reinier de Graafweg, Delft, the Netherlands; Department of Neurology (R.D.M.H.), King's College Hospital, Denmark Hill, London; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, United Kingdom; Department of Neurology (K.A.S.), University of Texas Health Science Centre at Houston; Department of Biology (N.K., S. Karafiath), Utah Valley University, Orem; Department of Neurology (M.V.), Lahey Hospital and Medical Center, Tufts University School of Medicine, Burlington, MA; Department of Neurology, Mental Health and Sensory Organs (NESMOS) (G.A.), Faculty of Medicine and Psychology, University of Rome 'Sapienza,' Sant' Andrea Hospital, Italy; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Alberta, Canada; Department of Neurology (C.F.), Maastricht University Medical Centre, the Netherlands; Department of Neurology (M.B.), Leeds Teaching Hospitals; Department of Neurology (R.C.R.), Addenbrooke's Hospital, Cambridge, United Kingdom; Department of Neurology (N.J.S.), University at Buffalo Jacobs School of Medicine and Biomedical Sciences, NY; Department of Neurology (R.F.), Scientific Institute San Raffaele, Milano, Italy; Department of Neurology (G.W.v.D.), Canisius Wilhelmina Hospital, Nijmegen; Department of Neurology (M.P.J.G.), Jeroen Bosch Hospital, 's-Hertogenbosch; Department of Neurology (J.V.), Leiden University Medical Centre; and Department of Immunology (B.C.J.), Erasmus MC, University Medical Centre Rotterdam, the Netherlands.; Cavaletti G; From the Department of Neurology (H.A.-H., H.A., T.H.), Aarhus University Hospital, Denmark; Department of Neurology (A.Y.D., B.v.d.B., C.V., J.R., S.E.L., S. Arends, L.W.G.L., K.K., B.C.J.), Erasmus MC, University Medical Centre Rotterdam, the Netherlands; Department of Neurology (A.M.S.), University of Michigan School of Medicine, Ann Arbor; Department of Neurology (S.A.Z.), University of Pittsburgh Medical Center, PA; Department of Neurology (H.J.W., A.D.), College of Medical, Veterinary and Life Sciences, University of Glasgow, United Kingdom; Department of Neurology (D.R.C.), Johns Hopkins University School of Medicine, Baltimore, MD; Department of Neurology (K.C.G.), St. Elizabeth's Medical Centre, Tufts University, School of Medicine, Boston, MA; Laboratory of Gut-Brain Signaling (Z.I.); Laboratory Sciences and Services Division (LSSD) (Z.I.), icddr,b; National Institute of Neurosciences and Hospital (Q.D.M.), Dhaka, Bangladesh; Department of Neurology (S.H.S.), Odense University Hospital and University of Southern Denmark; Department of Neurology (S. Kusunoki), Kindai University Faculty of Medicine, Osaka-Sayama City, Japan; Department of Neurology (C.C.), Neuromuscular Unit, Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Division of Neurology (K.B.), Department of Medicine, Groote Schuur Hospital, University of Cape Town, South Africa; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, United Kingdom; Department of Neurology (B.v.d.B., H.K.), Franciscus Gasthuis & Vlietland (location: Vlietland Hospital), Schiedam; Department of Neurology (S. Arends, P.W.W.), Haga Hospital, Den Haag; Department of Neurology (L.W.G.L., L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (S. Kuwabara), Chiba University, Chuo-ku, Japan; Department of Neurology (P.V.d.B.), Neuromuscular Reference Centre, University Hospital Saint-Luc, University of Louvain, Brussels, Belgium; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Dysimmune Neuropathies Unit (G.A.M.), Department of Systems Medicine, Tor Vergata University Hospital, Rome, Italy; Department of Medicine (N.S.), University of Malaya, Kuala Lumpur, Malaysia; Department of Neurology (G.G.), University Hospital of Modena, Italy; Department of Clinical Neurophysiology (Y.P.), Reference Centre for NMD, CHU Nantes, Nantes, France; Department of Neurology (J.B.), Saarland University Medical School, Homburg (previous hospital), and MVZ Pfalzklinikum (J.B.), Kusel, Germany (current hospital); Department of Neurology (K.K., R.P.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (C.M.), Hospital Británico, Buenos Aires, Argentina; Department of Neurology (M.J.S.T.), Hospital Marques de Valdecilla, Santander; Department of Neurology (L.Q., L.M.-A.), Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, CIBERER and ERN-NMD, Spain; Department of Neurology (Y.W.), Affiliated Hospital of Jining Medical University, Shandong Province, China; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Research Hospital, Milan University, Italy; Nuffield Department of Clinical Neurosciences (S.R.), University of Oxford and Oxford University Hospitals NHS Foundation Trust, United Kingdom; Department of Neurosciences, Ophthalmology, Rehabilitation, Genetics and Maternal Sciences (A.S.), University of Genova, and IRCCS San Martino Hospital (A.S.), Genova, Italy; Department of Neurology (J.P.), Hospital Clínico de Santiago, Travesia Choupana, Santiago de Compostela (A Coruña), Spain; Department of Neurology (F.H.V.), Franciscus Gasthuis & Vlietland (location: Franciscus Gasthuis), Rotterdam, the Netherlands; Department of Neurology (W.W., N.K.), University of Vermont Medical Centre, Burlington; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (V.G., B.S.), Montefiore Medical Center, Bronx, NY; Department of Neurology (G.C.), University Milano-Bicocca, Monza, Italy; Department of Neurology (G.G.-G.), Hospital Universitario Infanta Sofía, San Sebastián de los Reyes, Spain; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, FLENI, Buenos Aires, Argentina; Department of Neurology (H.D.K.), University Health Network, University of Toronto, Ontario, Canada; Department of Neurology (E.D.), University Hospital of Larissa, Greece; Department of Neurology (S. Attarian), Reference Centre for NMD, CHU Timone ERN NMD, Marseille, France; Department of Neurology (A.J.v.d.K., F.E.), Amsterdam University Medical Centre, University of Amsterdam, Neuroscience Institute; Department of Neurology (J.P.A.S.), Maasstad Hospital, Rotterdam; Department of Neurology (H.J.G.), Reinier de Graaf Hospital, Reinier de Graafweg, Delft, the Netherlands; Department of Neurology (R.D.M.H.), King's College Hospital, Denmark Hill, London; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, United Kingdom; Department of Neurology (K.A.S.), University of Texas Health Science Centre at Houston; Department of Biology (N.K., S. Karafiath), Utah Valley University, Orem; Department of Neurology (M.V.), Lahey Hospital and Medical Center, Tufts University School of Medicine, Burlington, MA; Department of Neurology, Mental Health and Sensory Organs (NESMOS) (G.A.), Faculty of Medicine and Psychology, University of Rome 'Sapienza,' Sant' Andrea Hospital, Italy; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Alberta, Canada; Department of Neurology (C.F.), Maastricht University Medical Centre, the Netherlands; Department of Neurology (M.B.), Leeds Teaching Hospitals; Department of Neurology (R.C.R.), Addenbrooke's Hospital, Cambridge, United Kingdom; Department of Neurology (N.J.S.), University at Buffalo Jacobs School of Medicine and Biomedical Sciences, NY; Department of Neurology (R.F.), Scientific Institute San Raffaele, Milano, Italy; Department of Neurology (G.W.v.D.), Canisius Wilhelmina Hospital, Nijmegen; Department of Neurology (M.P.J.G.), Jeroen Bosch Hospital, 's-Hertogenbosch; Department of Neurology (J.V.), Leiden University Medical Centre; and Department of Immunology (B.C.J.), Erasmus MC, University Medical Centre Rotterdam, the Netherlands.; Gutiérrez-Gutiérrez G; From the Department of Neurology (H.A.-H., H.A., T.H.), Aarhus University Hospital, Denmark; Department of Neurology (A.Y.D., B.v.d.B., C.V., J.R., S.E.L., S. Arends, L.W.G.L., K.K., B.C.J.), Erasmus MC, University Medical Centre Rotterdam, the Netherlands; Department of Neurology (A.M.S.), University of Michigan School of Medicine, Ann Arbor; Department of Neurology (S.A.Z.), University of Pittsburgh Medical Center, PA; Department of Neurology (H.J.W., A.D.), College of Medical, Veterinary and Life Sciences, University of Glasgow, United Kingdom; Department of Neurology (D.R.C.), Johns Hopkins University School of Medicine, Baltimore, MD; Department of Neurology (K.C.G.), St. Elizabeth's Medical Centre, Tufts University, School of Medicine, Boston, MA; Laboratory of Gut-Brain Signaling (Z.I.); Laboratory Sciences and Services Division (LSSD) (Z.I.), icddr,b; National Institute of Neurosciences and Hospital (Q.D.M.), Dhaka, Bangladesh; Department of Neurology (S.H.S.), Odense University Hospital and University of Southern Denmark; Department of Neurology (S. Kusunoki), Kindai University Faculty of Medicine, Osaka-Sayama City, Japan; Department of Neurology (C.C.), Neuromuscular Unit, Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Division of Neurology (K.B.), Department of Medicine, Groote Schuur Hospital, University of Cape Town, South Africa; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, United Kingdom; Department of Neurology (B.v.d.B., H.K.), Franciscus Gasthuis & Vlietland (location: Vlietland Hospital), Schiedam; Department of Neurology (S. Arends, P.W.W.), Haga Hospital, Den Haag; Department of Neurology (L.W.G.L., L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (S. Kuwabara), Chiba University, Chuo-ku, Japan; Department of Neurology (P.V.d.B.), Neuromuscular Reference Centre, University Hospital Saint-Luc, University of Louvain, Brussels, Belgium; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Dysimmune Neuropathies Unit (G.A.M.), Department of Systems Medicine, Tor Vergata University Hospital, Rome, Italy; Department of Medicine (N.S.), University of Malaya, Kuala Lumpur, Malaysia; Department of Neurology (G.G.), University Hospital of Modena, Italy; Department of Clinical Neurophysiology (Y.P.), Reference Centre for NMD, CHU Nantes, Nantes, France; Department of Neurology (J.B.), Saarland University Medical School, Homburg (previous hospital), and MVZ Pfalzklinikum (J.B.), Kusel, Germany (current hospital); Department of Neurology (K.K., R.P.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (C.M.), Hospital Británico, Buenos Aires, Argentina; Department of Neurology (M.J.S.T.), Hospital Marques de Valdecilla, Santander; Department of Neurology (L.Q., L.M.-A.), Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, CIBERER and ERN-NMD, Spain; Department of Neurology (Y.W.), Affiliated Hospital of Jining Medical University, Shandong Province, China; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Research Hospital, Milan University, Italy; Nuffield Department of Clinical Neurosciences (S.R.), University of Oxford and Oxford University Hospitals NHS Foundation Trust, United Kingdom; Department of Neurosciences, Ophthalmology, Rehabilitation, Genetics and Maternal Sciences (A.S.), University of Genova, and IRCCS San Martino Hospital (A.S.), Genova, Italy; Department of Neurology (J.P.), Hospital Clínico de Santiago, Travesia Choupana, Santiago de Compostela (A Coruña), Spain; Department of Neurology (F.H.V.), Franciscus Gasthuis & Vlietland (location: Franciscus Gasthuis), Rotterdam, the Netherlands; Department of Neurology (W.W., N.K.), University of Vermont Medical Centre, Burlington; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (V.G., B.S.), Montefiore Medical Center, Bronx, NY; Department of Neurology (G.C.), University Milano-Bicocca, Monza, Italy; Department of Neurology (G.G.-G.), Hospital Universitario Infanta Sofía, San Sebastián de los Reyes, Spain; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, FLENI, Buenos Aires, Argentina; Department of Neurology (H.D.K.), University Health Network, University of Toronto, Ontario, Canada; Department of Neurology (E.D.), University Hospital of Larissa, Greece; Department of Neurology (S. Attarian), Reference Centre for NMD, CHU Timone ERN NMD, Marseille, France; Department of Neurology (A.J.v.d.K., F.E.), Amsterdam University Medical Centre, University of Amsterdam, Neuroscience Institute; Department of Neurology (J.P.A.S.), Maasstad Hospital, Rotterdam; Department of Neurology (H.J.G.), Reinier de Graaf Hospital, Reinier de Graafweg, Delft, the Netherlands; Department of Neurology (R.D.M.H.), King's College Hospital, Denmark Hill, London; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, United Kingdom; Department of Neurology (K.A.S.), University of Texas Health Science Centre at Houston; Department of Biology (N.K., S. Karafiath), Utah Valley University, Orem; Department of Neurology (M.V.), Lahey Hospital and Medical Center, Tufts University School of Medicine, Burlington, MA; Department of Neurology, Mental Health and Sensory Organs (NESMOS) (G.A.), Faculty of Medicine and Psychology, University of Rome 'Sapienza,' Sant' Andrea Hospital, Italy; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Alberta, Canada; Department of Neurology (C.F.), Maastricht University Medical Centre, the Netherlands; Department of Neurology (M.B.), Leeds Teaching Hospitals; Department of Neurology (R.C.R.), Addenbrooke's Hospital, Cambridge, United Kingdom; Department of Neurology (N.J.S.), University at Buffalo Jacobs School of Medicine and Biomedical Sciences, NY; Department of Neurology (R.F.), Scientific Institute San Raffaele, Milano, Italy; Department of Neurology (G.W.v.D.), Canisius Wilhelmina Hospital, Nijmegen; Department of Neurology (M.P.J.G.), Jeroen Bosch Hospital, 's-Hertogenbosch; Department of Neurology (J.V.), Leiden University Medical Centre; and Department of Immunology (B.C.J.), Erasmus MC, University Medical Centre Rotterdam, the Netherlands.; Barroso FA; From the Department of Neurology (H.A.-H., H.A., T.H.), Aarhus University Hospital, Denmark; Department of Neurology (A.Y.D., B.v.d.B., C.V., J.R., S.E.L., S. Arends, L.W.G.L., K.K., B.C.J.), Erasmus MC, University Medical Centre Rotterdam, the Netherlands; Department of Neurology (A.M.S.), University of Michigan School of Medicine, Ann Arbor; Department of Neurology (S.A.Z.), University of Pittsburgh Medical Center, PA; Department of Neurology (H.J.W., A.D.), College of Medical, Veterinary and Life Sciences, University of Glasgow, United Kingdom; Department of Neurology (D.R.C.), Johns Hopkins University School of Medicine, Baltimore, MD; Department of Neurology (K.C.G.), St. Elizabeth's Medical Centre, Tufts University, School of Medicine, Boston, MA; Laboratory of Gut-Brain Signaling (Z.I.); Laboratory Sciences and Services Division (LSSD) (Z.I.), icddr,b; National Institute of Neurosciences and Hospital (Q.D.M.), Dhaka, Bangladesh; Department of Neurology (S.H.S.), Odense University Hospital and University of Southern Denmark; Department of Neurology (S. Kusunoki), Kindai University Faculty of Medicine, Osaka-Sayama City, Japan; Department of Neurology (C.C.), Neuromuscular Unit, Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Division of Neurology (K.B.), Department of Medicine, Groote Schuur Hospital, University of Cape Town, South Africa; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, United Kingdom; Department of Neurology (B.v.d.B., H.K.), Franciscus Gasthuis & Vlietland (location: Vlietland Hospital), Schiedam; Department of Neurology (S. Arends, P.W.W.), Haga Hospital, Den Haag; Department of Neurology (L.W.G.L., L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (S. Kuwabara), Chiba University, Chuo-ku, Japan; Department of Neurology (P.V.d.B.), Neuromuscular Reference Centre, University Hospital Saint-Luc, University of Louvain, Brussels, Belgium; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Dysimmune Neuropathies Unit (G.A.M.), Department of Systems Medicine, Tor Vergata University Hospital, Rome, Italy; Department of Medicine (N.S.), University of Malaya, Kuala Lumpur, Malaysia; Department of Neurology (G.G.), University Hospital of Modena, Italy; Department of Clinical Neurophysiology (Y.P.), Reference Centre for NMD, CHU Nantes, Nantes, France; Department of Neurology (J.B.), Saarland University Medical School, Homburg (previous hospital), and MVZ Pfalzklinikum (J.B.), Kusel, Germany (current hospital); Department of Neurology (K.K., R.P.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (C.M.), Hospital Británico, Buenos Aires, Argentina; Department of Neurology (M.J.S.T.), Hospital Marques de Valdecilla, Santander; Department of Neurology (L.Q., L.M.-A.), Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, CIBERER and ERN-NMD, Spain; Department of Neurology (Y.W.), Affiliated Hospital of Jining Medical University, Shandong Province, China; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Research Hospital, Milan University, Italy; Nuffield Department of Clinical Neurosciences (S.R.), University of Oxford and Oxford University Hospitals NHS Foundation Trust, United Kingdom; Department of Neurosciences, Ophthalmology, Rehabilitation, Genetics and Maternal Sciences (A.S.), University of Genova, and IRCCS San Martino Hospital (A.S.), Genova, Italy; Department of Neurology (J.P.), Hospital Clínico de Santiago, Travesia Choupana, Santiago de Compostela (A Coruña), Spain; Department of Neurology (F.H.V.), Franciscus Gasthuis & Vlietland (location: Franciscus Gasthuis), Rotterdam, the Netherlands; Department of Neurology (W.W., N.K.), University of Vermont Medical Centre, Burlington; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (V.G., B.S.), Montefiore Medical Center, Bronx, NY; Department of Neurology (G.C.), University Milano-Bicocca, Monza, Italy; Department of Neurology (G.G.-G.), Hospital Universitario Infanta Sofía, San Sebastián de los Reyes, Spain; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, FLENI, Buenos Aires, Argentina; Department of Neurology (H.D.K.), University Health Network, University of Toronto, Ontario, Canada; Department of Neurology (E.D.), University Hospital of Larissa, Greece; Department of Neurology (S. Attarian), Reference Centre for NMD, CHU Timone ERN NMD, Marseille, France; Department of Neurology (A.J.v.d.K., F.E.), Amsterdam University Medical Centre, University of Amsterdam, Neuroscience Institute; Department of Neurology (J.P.A.S.), Maasstad Hospital, Rotterdam; Department of Neurology (H.J.G.), Reinier de Graaf Hospital, Reinier de Graafweg, Delft, the Netherlands; Department of Neurology (R.D.M.H.), King's College Hospital, Denmark Hill, London; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, United Kingdom; Department of Neurology (K.A.S.), University of Texas Health Science Centre at Houston; Department of Biology (N.K., S. Karafiath), Utah Valley University, Orem; Department of Neurology (M.V.), Lahey Hospital and Medical Center, Tufts University School of Medicine, Burlington, MA; Department of Neurology, Mental Health and Sensory Organs (NESMOS) (G.A.), Faculty of Medicine and Psychology, University of Rome 'Sapienza,' Sant' Andrea Hospital, Italy; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Alberta, Canada; Department of Neurology (C.F.), Maastricht University Medical Centre, the Netherlands; Department of Neurology (M.B.), Leeds Teaching Hospitals; Department of Neurology (R.C.R.), Addenbrooke's Hospital, Cambridge, United Kingdom; Department of Neurology (N.J.S.), University at Buffalo Jacobs School of Medicine and Biomedical Sciences, NY; Department of Neurology (R.F.), Scientific Institute San Raffaele, Milano, Italy; Department of Neurology (G.W.v.D.), Canisius Wilhelmina Hospital, Nijmegen; Department of Neurology (M.P.J.G.), Jeroen Bosch Hospital, 's-Hertogenbosch; Department of Neurology (J.V.), Leiden University Medical Centre; and Department of Immunology (B.C.J.), Erasmus MC, University Medical Centre Rotterdam, the Netherlands.; Visser LH; From the Department of Neurology (H.A.-H., H.A., T.H.), Aarhus University Hospital, Denmark; Department of Neurology (A.Y.D., B.v.d.B., C.V., J.R., S.E.L., S. Arends, L.W.G.L., K.K., B.C.J.), Erasmus MC, University Medical Centre Rotterdam, the Netherlands; Department of Neurology (A.M.S.), University of Michigan School of Medicine, Ann Arbor; Department of Neurology (S.A.Z.), University of Pittsburgh Medical Center, PA; Department of Neurology (H.J.W., A.D.), College of Medical, Veterinary and Life Sciences, University of Glasgow, United Kingdom; Department of Neurology (D.R.C.), Johns Hopkins University School of Medicine, Baltimore, MD; Department of Neurology (K.C.G.), St. Elizabeth's Medical Centre, Tufts University, School of Medicine, Boston, MA; Laboratory of Gut-Brain Signaling (Z.I.); Laboratory Sciences and Services Division (LSSD) (Z.I.), icddr,b; National Institute of Neurosciences and Hospital (Q.D.M.), Dhaka, Bangladesh; Department of Neurology (S.H.S.), Odense University Hospital and University of Southern Denmark; Department of Neurology (S. Kusunoki), Kindai University Faculty of Medicine, Osaka-Sayama City, Japan; Department of Neurology (C.C.), Neuromuscular Unit, Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Division of Neurology (K.B.), Department of Medicine, Groote Schuur Hospital, University of Cape Town, South Africa; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, United Kingdom; Department of Neurology (B.v.d.B., H.K.), Franciscus Gasthuis & Vlietland (location: Vlietland Hospital), Schiedam; Department of Neurology (S. Arends, P.W.W.), Haga Hospital, Den Haag; Department of Neurology (L.W.G.L., L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (S. Kuwabara), Chiba University, Chuo-ku, Japan; Department of Neurology (P.V.d.B.), Neuromuscular Reference Centre, University Hospital Saint-Luc, University of Louvain, Brussels, Belgium; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Dysimmune Neuropathies Unit (G.A.M.), Department of Systems Medicine, Tor Vergata University Hospital, Rome, Italy; Department of Medicine (N.S.), University of Malaya, Kuala Lumpur, Malaysia; Department of Neurology (G.G.), University Hospital of Modena, Italy; Department of Clinical Neurophysiology (Y.P.), Reference Centre for NMD, CHU Nantes, Nantes, France; Department of Neurology (J.B.), Saarland University Medical School, Homburg (previous hospital), and MVZ Pfalzklinikum (J.B.), Kusel, Germany (current hospital); Department of Neurology (K.K., R.P.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (C.M.), Hospital Británico, Buenos Aires, Argentina; Department of Neurology (M.J.S.T.), Hospital Marques de Valdecilla, Santander; Department of Neurology (L.Q., L.M.-A.), Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, CIBERER and ERN-NMD, Spain; Department of Neurology (Y.W.), Affiliated Hospital of Jining Medical University, Shandong Province, China; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Research Hospital, Milan University, Italy; Nuffield Department of Clinical Neurosciences (S.R.), University of Oxford and Oxford University Hospitals NHS Foundation Trust, United Kingdom; Department of Neurosciences, Ophthalmology, Rehabilitation, Genetics and Maternal Sciences (A.S.), University of Genova, and IRCCS San Martino Hospital (A.S.), Genova, Italy; Department of Neurology (J.P.), Hospital Clínico de Santiago, Travesia Choupana, Santiago de Compostela (A Coruña), Spain; Department of Neurology (F.H.V.), Franciscus Gasthuis & Vlietland (location: Franciscus Gasthuis), Rotterdam, the Netherlands; Department of Neurology (W.W., N.K.), University of Vermont Medical Centre, Burlington; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (V.G., B.S.), Montefiore Medical Center, Bronx, NY; Department of Neurology (G.C.), University Milano-Bicocca, Monza, Italy; Department of Neurology (G.G.-G.), Hospital Universitario Infanta Sofía, San Sebastián de los Reyes, Spain; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, FLENI, Buenos Aires, Argentina; Department of Neurology (H.D.K.), University Health Network, University of Toronto, Ontario, Canada; Department of Neurology (E.D.), University Hospital of Larissa, Greece; Department of Neurology (S. Attarian), Reference Centre for NMD, CHU Timone ERN NMD, Marseille, France; Department of Neurology (A.J.v.d.K., F.E.), Amsterdam University Medical Centre, University of Amsterdam, Neuroscience Institute; Department of Neurology (J.P.A.S.), Maasstad Hospital, Rotterdam; Department of Neurology (H.J.G.), Reinier de Graaf Hospital, Reinier de Graafweg, Delft, the Netherlands; Department of Neurology (R.D.M.H.), King's College Hospital, Denmark Hill, London; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, United Kingdom; Department of Neurology (K.A.S.), University of Texas Health Science Centre at Houston; Department of Biology (N.K., S. Karafiath), Utah Valley University, Orem; Department of Neurology (M.V.), Lahey Hospital and Medical Center, Tufts University School of Medicine, Burlington, MA; Department of Neurology, Mental Health and Sensory Organs (NESMOS) (G.A.), Faculty of Medicine and Psychology, University of Rome 'Sapienza,' Sant' Andrea Hospital, Italy; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Alberta, Canada; Department of Neurology (C.F.), Maastricht University Medical Centre, the Netherlands; Department of Neurology (M.B.), Leeds Teaching Hospitals; Department of Neurology (R.C.R.), Addenbrooke's Hospital, Cambridge, United Kingdom; Department of Neurology (N.J.S.), University at Buffalo Jacobs School of Medicine and Biomedical Sciences, NY; Department of Neurology (R.F.), Scientific Institute San Raffaele, Milano, Italy; Department of Neurology (G.W.v.D.), Canisius Wilhelmina Hospital, Nijmegen; Department of Neurology (M.P.J.G.), Jeroen Bosch Hospital, 's-Hertogenbosch; Department of Neurology (J.V.), Leiden University Medical Centre; and Department of Immunology (B.C.J.), Erasmus MC, University Medical Centre Rotterdam, the Netherlands.; Katzberg HD; From the Department of Neurology (H.A.-H., H.A., T.H.), Aarhus University Hospital, Denmark; Department of Neurology (A.Y.D., B.v.d.B., C.V., J.R., S.E.L., S. Arends, L.W.G.L., K.K., B.C.J.), Erasmus MC, University Medical Centre Rotterdam, the Netherlands; Department of Neurology (A.M.S.), University of Michigan School of Medicine, Ann Arbor; Department of Neurology (S.A.Z.), University of Pittsburgh Medical Center, PA; Department of Neurology (H.J.W., A.D.), College of Medical, Veterinary and Life Sciences, University of Glasgow, United Kingdom; Department of Neurology (D.R.C.), Johns Hopkins University School of Medicine, Baltimore, MD; Department of Neurology (K.C.G.), St. Elizabeth's Medical Centre, Tufts University, School of Medicine, Boston, MA; Laboratory of Gut-Brain Signaling (Z.I.); Laboratory Sciences and Services Division (LSSD) (Z.I.), icddr,b; National Institute of Neurosciences and Hospital (Q.D.M.), Dhaka, Bangladesh; Department of Neurology (S.H.S.), Odense University Hospital and University of Southern Denmark; Department of Neurology (S. Kusunoki), Kindai University Faculty of Medicine, Osaka-Sayama City, Japan; Department of Neurology (C.C.), Neuromuscular Unit, Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Division of Neurology (K.B.), Department of Medicine, Groote Schuur Hospital, University of Cape Town, South Africa; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, United Kingdom; Department of Neurology (B.v.d.B., H.K.), Franciscus Gasthuis & Vlietland (location: Vlietland Hospital), Schiedam; Department of Neurology (S. Arends, P.W.W.), Haga Hospital, Den Haag; Department of Neurology (L.W.G.L., L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (S. Kuwabara), Chiba University, Chuo-ku, Japan; Department of Neurology (P.V.d.B.), Neuromuscular Reference Centre, University Hospital Saint-Luc, University of Louvain, Brussels, Belgium; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Dysimmune Neuropathies Unit (G.A.M.), Department of Systems Medicine, Tor Vergata University Hospital, Rome, Italy; Department of Medicine (N.S.), University of Malaya, Kuala Lumpur, Malaysia; Department of Neurology (G.G.), University Hospital of Modena, Italy; Department of Clinical Neurophysiology (Y.P.), Reference Centre for NMD, CHU Nantes, Nantes, France; Department of Neurology (J.B.), Saarland University Medical School, Homburg (previous hospital), and MVZ Pfalzklinikum (J.B.), Kusel, Germany (current hospital); Department of Neurology (K.K., R.P.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (C.M.), Hospital Británico, Buenos Aires, Argentina; Department of Neurology (M.J.S.T.), Hospital Marques de Valdecilla, Santander; Department of Neurology (L.Q., L.M.-A.), Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, CIBERER and ERN-NMD, Spain; Department of Neurology (Y.W.), Affiliated Hospital of Jining Medical University, Shandong Province, China; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Research Hospital, Milan University, Italy; Nuffield Department of Clinical Neurosciences (S.R.), University of Oxford and Oxford University Hospitals NHS Foundation Trust, United Kingdom; Department of Neurosciences, Ophthalmology, Rehabilitation, Genetics and Maternal Sciences (A.S.), University of Genova, and IRCCS San Martino Hospital (A.S.), Genova, Italy; Department of Neurology (J.P.), Hospital Clínico de Santiago, Travesia Choupana, Santiago de Compostela (A Coruña), Spain; Department of Neurology (F.H.V.), Franciscus Gasthuis & Vlietland (location: Franciscus Gasthuis), Rotterdam, the Netherlands; Department of Neurology (W.W., N.K.), University of Vermont Medical Centre, Burlington; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (V.G., B.S.), Montefiore Medical Center, Bronx, NY; Department of Neurology (G.C.), University Milano-Bicocca, Monza, Italy; Department of Neurology (G.G.-G.), Hospital Universitario Infanta Sofía, San Sebastián de los Reyes, Spain; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, FLENI, Buenos Aires, Argentina; Department of Neurology (H.D.K.), University Health Network, University of Toronto, Ontario, Canada; Department of Neurology (E.D.), University Hospital of Larissa, Greece; Department of Neurology (S. Attarian), Reference Centre for NMD, CHU Timone ERN NMD, Marseille, France; Department of Neurology (A.J.v.d.K., F.E.), Amsterdam University Medical Centre, University of Amsterdam, Neuroscience Institute; Department of Neurology (J.P.A.S.), Maasstad Hospital, Rotterdam; Department of Neurology (H.J.G.), Reinier de Graaf Hospital, Reinier de Graafweg, Delft, the Netherlands; Department of Neurology (R.D.M.H.), King's College Hospital, Denmark Hill, London; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, United Kingdom; Department of Neurology (K.A.S.), University of Texas Health Science Centre at Houston; Department of Biology (N.K., S. Karafiath), Utah Valley University, Orem; Department of Neurology (M.V.), Lahey Hospital and Medical Center, Tufts University School of Medicine, Burlington, MA; Department of Neurology, Mental Health and Sensory Organs (NESMOS) (G.A.), Faculty of Medicine and Psychology, University of Rome 'Sapienza,' Sant' Andrea Hospital, Italy; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Alberta, Canada; Department of Neurology (C.F.), Maastricht University Medical Centre, the Netherlands; Department of Neurology (M.B.), Leeds Teaching Hospitals; Department of Neurology (R.C.R.), Addenbrooke's Hospital, Cambridge, United Kingdom; Department of Neurology (N.J.S.), University at Buffalo Jacobs School of Medicine and Biomedical Sciences, NY; Department of Neurology (R.F.), Scientific Institute San Raffaele, Milano, Italy; Department of Neurology (G.W.v.D.), Canisius Wilhelmina Hospital, Nijmegen; Department of Neurology (M.P.J.G.), Jeroen Bosch Hospital, 's-Hertogenbosch; Department of Neurology (J.V.), Leiden University Medical Centre; and Department of Immunology (B.C.J.), Erasmus MC, University Medical Centre Rotterdam, the Netherlands.; Dardiotis E; From the Department of Neurology (H.A.-H., H.A., T.H.), Aarhus University Hospital, Denmark; Department of Neurology (A.Y.D., B.v.d.B., C.V., J.R., S.E.L., S. Arends, L.W.G.L., K.K., B.C.J.), Erasmus MC, University Medical Centre Rotterdam, the Netherlands; Department of Neurology (A.M.S.), University of Michigan School of Medicine, Ann Arbor; Department of Neurology (S.A.Z.), University of Pittsburgh Medical Center, PA; Department of Neurology (H.J.W., A.D.), College of Medical, Veterinary and Life Sciences, University of Glasgow, United Kingdom; Department of Neurology (D.R.C.), Johns Hopkins University School of Medicine, Baltimore, MD; Department of Neurology (K.C.G.), St. Elizabeth's Medical Centre, Tufts University, School of Medicine, Boston, MA; Laboratory of Gut-Brain Signaling (Z.I.); Laboratory Sciences and Services Division (LSSD) (Z.I.), icddr,b; National Institute of Neurosciences and Hospital (Q.D.M.), Dhaka, Bangladesh; Department of Neurology (S.H.S.), Odense University Hospital and University of Southern Denmark; Department of Neurology (S. Kusunoki), Kindai University Faculty of Medicine, Osaka-Sayama City, Japan; Department of Neurology (C.C.), Neuromuscular Unit, Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Division of Neurology (K.B.), Department of Medicine, Groote Schuur Hospital, University of Cape Town, South Africa; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, United Kingdom; Department of Neurology (B.v.d.B., H.K.), Franciscus Gasthuis & Vlietland (location: Vlietland Hospital), Schiedam; Department of Neurology (S. Arends, P.W.W.), Haga Hospital, Den Haag; Department of Neurology (L.W.G.L., L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (S. Kuwabara), Chiba University, Chuo-ku, Japan; Department of Neurology (P.V.d.B.), Neuromuscular Reference Centre, University Hospital Saint-Luc, University of Louvain, Brussels, Belgium; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Dysimmune Neuropathies Unit (G.A.M.), Department of Systems Medicine, Tor Vergata University Hospital, Rome, Italy; Department of Medicine (N.S.), University of Malaya, Kuala Lumpur, Malaysia; Department of Neurology (G.G.), University Hospital of Modena, Italy; Department of Clinical Neurophysiology (Y.P.), Reference Centre for NMD, CHU Nantes, Nantes, France; Department of Neurology (J.B.), Saarland University Medical School, Homburg (previous hospital), and MVZ Pfalzklinikum (J.B.), Kusel, Germany (current hospital); Department of Neurology (K.K., R.P.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (C.M.), Hospital Británico, Buenos Aires, Argentina; Department of Neurology (M.J.S.T.), Hospital Marques de Valdecilla, Santander; Department of Neurology (L.Q., L.M.-A.), Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, CIBERER and ERN-NMD, Spain; Department of Neurology (Y.W.), Affiliated Hospital of Jining Medical University, Shandong Province, China; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Research Hospital, Milan University, Italy; Nuffield Department of Clinical Neurosciences (S.R.), University of Oxford and Oxford University Hospitals NHS Foundation Trust, United Kingdom; Department of Neurosciences, Ophthalmology, Rehabilitation, Genetics and Maternal Sciences (A.S.), University of Genova, and IRCCS San Martino Hospital (A.S.), Genova, Italy; Department of Neurology (J.P.), Hospital Clínico de Santiago, Travesia Choupana, Santiago de Compostela (A Coruña), Spain; Department of Neurology (F.H.V.), Franciscus Gasthuis & Vlietland (location: Franciscus Gasthuis), Rotterdam, the Netherlands; Department of Neurology (W.W., N.K.), University of Vermont Medical Centre, Burlington; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (V.G., B.S.), Montefiore Medical Center, Bronx, NY; Department of Neurology (G.C.), University Milano-Bicocca, Monza, Italy; Department of Neurology (G.G.-G.), Hospital Universitario Infanta Sofía, San Sebastián de los Reyes, Spain; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, FLENI, Buenos Aires, Argentina; Department of Neurology (H.D.K.), University Health Network, University of Toronto, Ontario, Canada; Department of Neurology (E.D.), University Hospital of Larissa, Greece; Department of Neurology (S. Attarian), Reference Centre for NMD, CHU Timone ERN NMD, Marseille, France; Department of Neurology (A.J.v.d.K., F.E.), Amsterdam University Medical Centre, University of Amsterdam, Neuroscience Institute; Department of Neurology (J.P.A.S.), Maasstad Hospital, Rotterdam; Department of Neurology (H.J.G.), Reinier de Graaf Hospital, Reinier de Graafweg, Delft, the Netherlands; Department of Neurology (R.D.M.H.), King's College Hospital, Denmark Hill, London; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, United Kingdom; Department of Neurology (K.A.S.), University of Texas Health Science Centre at Houston; Department of Biology (N.K., S. Karafiath), Utah Valley University, Orem; Department of Neurology (M.V.), Lahey Hospital and Medical Center, Tufts University School of Medicine, Burlington, MA; Department of Neurology, Mental Health and Sensory Organs (NESMOS) (G.A.), Faculty of Medicine and Psychology, University of Rome 'Sapienza,' Sant' Andrea Hospital, Italy; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Alberta, Canada; Department of Neurology (C.F.), Maastricht University Medical Centre, the Netherlands; Department of Neurology (M.B.), Leeds Teaching Hospitals; Department of Neurology (R.C.R.), Addenbrooke's Hospital, Cambridge, United Kingdom; Department of Neurology (N.J.S.), University at Buffalo Jacobs School of Medicine and Biomedical Sciences, NY; Department of Neurology (R.F.), Scientific Institute San Raffaele, Milano, Italy; Department of Neurology (G.W.v.D.), Canisius Wilhelmina Hospital, Nijmegen; Department of Neurology (M.P.J.G.), Jeroen Bosch Hospital, 's-Hertogenbosch; Department of Neurology (J.V.), Leiden University Medical Centre; and Department of Immunology (B.C.J.), Erasmus MC, University Medical Centre Rotterdam, the Netherlands.; Attarian S; From the Department of Neurology (H.A.-H., H.A., T.H.), Aarhus University Hospital, Denmark; Department of Neurology (A.Y.D., B.v.d.B., C.V., J.R., S.E.L., S. Arends, L.W.G.L., K.K., B.C.J.), Erasmus MC, University Medical Centre Rotterdam, the Netherlands; Department of Neurology (A.M.S.), University of Michigan School of Medicine, Ann Arbor; Department of Neurology (S.A.Z.), University of Pittsburgh Medical Center, PA; Department of Neurology (H.J.W., A.D.), College of Medical, Veterinary and Life Sciences, University of Glasgow, United Kingdom; Department of Neurology (D.R.C.), Johns Hopkins University School of Medicine, Baltimore, MD; Department of Neurology (K.C.G.), St. Elizabeth's Medical Centre, Tufts University, School of Medicine, Boston, MA; Laboratory of Gut-Brain Signaling (Z.I.); Laboratory Sciences and Services Division (LSSD) (Z.I.), icddr,b; National Institute of Neurosciences and Hospital (Q.D.M.), Dhaka, Bangladesh; Department of Neurology (S.H.S.), Odense University Hospital and University of Southern Denmark; Department of Neurology (S. Kusunoki), Kindai University Faculty of Medicine, Osaka-Sayama City, Japan; Department of Neurology (C.C.), Neuromuscular Unit, Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Division of Neurology (K.B.), Department of Medicine, Groote Schuur Hospital, University of Cape Town, South Africa; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, United Kingdom; Department of Neurology (B.v.d.B., H.K.), Franciscus Gasthuis & Vlietland (location: Vlietland Hospital), Schiedam; Department of Neurology (S. Arends, P.W.W.), Haga Hospital, Den Haag; Department of Neurology (L.W.G.L., L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (S. Kuwabara), Chiba University, Chuo-ku, Japan; Department of Neurology (P.V.d.B.), Neuromuscular Reference Centre, University Hospital Saint-Luc, University of Louvain, Brussels, Belgium; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Dysimmune Neuropathies Unit (G.A.M.), Department of Systems Medicine, Tor Vergata University Hospital, Rome, Italy; Department of Medicine (N.S.), University of Malaya, Kuala Lumpur, Malaysia; Department of Neurology (G.G.), University Hospital of Modena, Italy; Department of Clinical Neurophysiology (Y.P.), Reference Centre for NMD, CHU Nantes, Nantes, France; Department of Neurology (J.B.), Saarland University Medical School, Homburg (previous hospital), and MVZ Pfalzklinikum (J.B.), Kusel, Germany (current hospital); Department of Neurology (K.K., R.P.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (C.M.), Hospital Británico, Buenos Aires, Argentina; Department of Neurology (M.J.S.T.), Hospital Marques de Valdecilla, Santander; Department of Neurology (L.Q., L.M.-A.), Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, CIBERER and ERN-NMD, Spain; Department of Neurology (Y.W.), Affiliated Hospital of Jining Medical University, Shandong Province, China; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Research Hospital, Milan University, Italy; Nuffield Department of Clinical Neurosciences (S.R.), University of Oxford and Oxford University Hospitals NHS Foundation Trust, United Kingdom; Department of Neurosciences, Ophthalmology, Rehabilitation, Genetics and Maternal Sciences (A.S.), University of Genova, and IRCCS San Martino Hospital (A.S.), Genova, Italy; Department of Neurology (J.P.), Hospital Clínico de Santiago, Travesia Choupana, Santiago de Compostela (A Coruña), Spain; Department of Neurology (F.H.V.), Franciscus Gasthuis & Vlietland (location: Franciscus Gasthuis), Rotterdam, the Netherlands; Department of Neurology (W.W., N.K.), University of Vermont Medical Centre, Burlington; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (V.G., B.S.), Montefiore Medical Center, Bronx, NY; Department of Neurology (G.C.), University Milano-Bicocca, Monza, Italy; Department of Neurology (G.G.-G.), Hospital Universitario Infanta Sofía, San Sebastián de los Reyes, Spain; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, FLENI, Buenos Aires, Argentina; Department of Neurology (H.D.K.), University Health Network, University of Toronto, Ontario, Canada; Department of Neurology (E.D.), University Hospital of Larissa, Greece; Department of Neurology (S. Attarian), Reference Centre for NMD, CHU Timone ERN NMD, Marseille, France; Department of Neurology (A.J.v.d.K., F.E.), Amsterdam University Medical Centre, University of Amsterdam, Neuroscience Institute; Department of Neurology (J.P.A.S.), Maasstad Hospital, Rotterdam; Department of Neurology (H.J.G.), Reinier de Graaf Hospital, Reinier de Graafweg, Delft, the Netherlands; Department of Neurology (R.D.M.H.), King's College Hospital, Denmark Hill, London; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, United Kingdom; Department of Neurology (K.A.S.), University of Texas Health Science Centre at Houston; Department of Biology (N.K., S. Karafiath), Utah Valley University, Orem; Department of Neurology (M.V.), Lahey Hospital and Medical Center, Tufts University School of Medicine, Burlington, MA; Department of Neurology, Mental Health and Sensory Organs (NESMOS) (G.A.), Faculty of Medicine and Psychology, University of Rome 'Sapienza,' Sant' Andrea Hospital, Italy; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Alberta, Canada; Department of Neurology (C.F.), Maastricht University Medical Centre, the Netherlands; Department of Neurology (M.B.), Leeds Teaching Hospitals; Department of Neurology (R.C.R.), Addenbrooke's Hospital, Cambridge, United Kingdom; Department of Neurology (N.J.S.), University at Buffalo Jacobs School of Medicine and Biomedical Sciences, NY; Department of Neurology (R.F.), Scientific Institute San Raffaele, Milano, Italy; Department of Neurology (G.W.v.D.), Canisius Wilhelmina Hospital, Nijmegen; Department of Neurology (M.P.J.G.), Jeroen Bosch Hospital, 's-Hertogenbosch; Department of Neurology (J.V.), Leiden University Medical Centre; and Department of Immunology (B.C.J.), Erasmus MC, University Medical Centre Rotterdam, the Netherlands.; van der Kooi AJ; From the Department of Neurology (H.A.-H., H.A., T.H.), Aarhus University Hospital, Denmark; Department of Neurology (A.Y.D., B.v.d.B., C.V., J.R., S.E.L., S. Arends, L.W.G.L., K.K., B.C.J.), Erasmus MC, University Medical Centre Rotterdam, the Netherlands; Department of Neurology (A.M.S.), University of Michigan School of Medicine, Ann Arbor; Department of Neurology (S.A.Z.), University of Pittsburgh Medical Center, PA; Department of Neurology (H.J.W., A.D.), College of Medical, Veterinary and Life Sciences, University of Glasgow, United Kingdom; Department of Neurology (D.R.C.), Johns Hopkins University School of Medicine, Baltimore, MD; Department of Neurology (K.C.G.), St. Elizabeth's Medical Centre, Tufts University, School of Medicine, Boston, MA; Laboratory of Gut-Brain Signaling (Z.I.); Laboratory Sciences and Services Division (LSSD) (Z.I.), icddr,b; National Institute of Neurosciences and Hospital (Q.D.M.), Dhaka, Bangladesh; Department of Neurology (S.H.S.), Odense University Hospital and University of Southern Denmark; Department of Neurology (S. Kusunoki), Kindai University Faculty of Medicine, Osaka-Sayama City, Japan; Department of Neurology (C.C.), Neuromuscular Unit, Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Division of Neurology (K.B.), Department of Medicine, Groote Schuur Hospital, University of Cape Town, South Africa; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, United Kingdom; Department of Neurology (B.v.d.B., H.K.), Franciscus Gasthuis & Vlietland (location: Vlietland Hospital), Schiedam; Department of Neurology (S. Arends, P.W.W.), Haga Hospital, Den Haag; Department of Neurology (L.W.G.L., L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (S. Kuwabara), Chiba University, Chuo-ku, Japan; Department of Neurology (P.V.d.B.), Neuromuscular Reference Centre, University Hospital Saint-Luc, University of Louvain, Brussels, Belgium; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Dysimmune Neuropathies Unit (G.A.M.), Department of Systems Medicine, Tor Vergata University Hospital, Rome, Italy; Department of Medicine (N.S.), University of Malaya, Kuala Lumpur, Malaysia; Department of Neurology (G.G.), University Hospital of Modena, Italy; Department of Clinical Neurophysiology (Y.P.), Reference Centre for NMD, CHU Nantes, Nantes, France; Department of Neurology (J.B.), Saarland University Medical School, Homburg (previous hospital), and MVZ Pfalzklinikum (J.B.), Kusel, Germany (current hospital); Department of Neurology (K.K., R.P.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (C.M.), Hospital Británico, Buenos Aires, Argentina; Department of Neurology (M.J.S.T.), Hospital Marques de Valdecilla, Santander; Department of Neurology (L.Q., L.M.-A.), Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, CIBERER and ERN-NMD, Spain; Department of Neurology (Y.W.), Affiliated Hospital of Jining Medical University, Shandong Province, China; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Research Hospital, Milan University, Italy; Nuffield Department of Clinical Neurosciences (S.R.), University of Oxford and Oxford University Hospitals NHS Foundation Trust, United Kingdom; Department of Neurosciences, Ophthalmology, Rehabilitation, Genetics and Maternal Sciences (A.S.), University of Genova, and IRCCS San Martino Hospital (A.S.), Genova, Italy; Department of Neurology (J.P.), Hospital Clínico de Santiago, Travesia Choupana, Santiago de Compostela (A Coruña), Spain; Department of Neurology (F.H.V.), Franciscus Gasthuis & Vlietland (location: Franciscus Gasthuis), Rotterdam, the Netherlands; Department of Neurology (W.W., N.K.), University of Vermont Medical Centre, Burlington; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (V.G., B.S.), Montefiore Medical Center, Bronx, NY; Department of Neurology (G.C.), University Milano-Bicocca, Monza, Italy; Department of Neurology (G.G.-G.), Hospital Universitario Infanta Sofía, San Sebastián de los Reyes, Spain; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, FLENI, Buenos Aires, Argentina; Department of Neurology (H.D.K.), University Health Network, University of Toronto, Ontario, Canada; Department of Neurology (E.D.), University Hospital of Larissa, Greece; Department of Neurology (S. Attarian), Reference Centre for NMD, CHU Timone ERN NMD, Marseille, France; Department of Neurology (A.J.v.d.K., F.E.), Amsterdam University Medical Centre, University of Amsterdam, Neuroscience Institute; Department of Neurology (J.P.A.S.), Maasstad Hospital, Rotterdam; Department of Neurology (H.J.G.), Reinier de Graaf Hospital, Reinier de Graafweg, Delft, the Netherlands; Department of Neurology (R.D.M.H.), King's College Hospital, Denmark Hill, London; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, United Kingdom; Department of Neurology (K.A.S.), University of Texas Health Science Centre at Houston; Department of Biology (N.K., S. Karafiath), Utah Valley University, Orem; Department of Neurology (M.V.), Lahey Hospital and Medical Center, Tufts University School of Medicine, Burlington, MA; Department of Neurology, Mental Health and Sensory Organs (NESMOS) (G.A.), Faculty of Medicine and Psychology, University of Rome 'Sapienza,' Sant' Andrea Hospital, Italy; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Alberta, Canada; Department of Neurology (C.F.), Maastricht University Medical Centre, the Netherlands; Department of Neurology (M.B.), Leeds Teaching Hospitals; Department of Neurology (R.C.R.), Addenbrooke's Hospital, Cambridge, United Kingdom; Department of Neurology (N.J.S.), University at Buffalo Jacobs School of Medicine and Biomedical Sciences, NY; Department of Neurology (R.F.), Scientific Institute San Raffaele, Milano, Italy; Department of Neurology (G.W.v.D.), Canisius Wilhelmina Hospital, Nijmegen; Department of Neurology (M.P.J.G.), Jeroen Bosch Hospital, 's-Hertogenbosch; Department of Neurology (J.V.), Leiden University Medical Centre; and Department of Immunology (B.C.J.), Erasmus MC, University Medical Centre Rotterdam, the Netherlands.; Eftimov F; From the Department of Neurology (H.A.-H., H.A., T.H.), Aarhus University Hospital, Denmark; Department of Neurology (A.Y.D., B.v.d.B., C.V., J.R., S.E.L., S. Arends, L.W.G.L., K.K., B.C.J.), Erasmus MC, University Medical Centre Rotterdam, the Netherlands; Department of Neurology (A.M.S.), University of Michigan School of Medicine, Ann Arbor; Department of Neurology (S.A.Z.), University of Pittsburgh Medical Center, PA; Department of Neurology (H.J.W., A.D.), College of Medical, Veterinary and Life Sciences, University of Glasgow, United Kingdom; Department of Neurology (D.R.C.), Johns Hopkins University School of Medicine, Baltimore, MD; Department of Neurology (K.C.G.), St. Elizabeth's Medical Centre, Tufts University, School of Medicine, Boston, MA; Laboratory of Gut-Brain Signaling (Z.I.); Laboratory Sciences and Services Division (LSSD) (Z.I.), icddr,b; National Institute of Neurosciences and Hospital (Q.D.M.), Dhaka, Bangladesh; Department of Neurology (S.H.S.), Odense University Hospital and University of Southern Denmark; Department of Neurology (S. Kusunoki), Kindai University Faculty of Medicine, Osaka-Sayama City, Japan; Department of Neurology (C.C.), Neuromuscular Unit, Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Division of Neurology (K.B.), Department of Medicine, Groote Schuur Hospital, University of Cape Town, South Africa; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, United Kingdom; Department of Neurology (B.v.d.B., H.K.), Franciscus Gasthuis & Vlietland (location: Vlietland Hospital), Schiedam; Department of Neurology (S. Arends, P.W.W.), Haga Hospital, Den Haag; Department of Neurology (L.W.G.L., L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (S. Kuwabara), Chiba University, Chuo-ku, Japan; Department of Neurology (P.V.d.B.), Neuromuscular Reference Centre, University Hospital Saint-Luc, University of Louvain, Brussels, Belgium; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Dysimmune Neuropathies Unit (G.A.M.), Department of Systems Medicine, Tor Vergata University Hospital, Rome, Italy; Department of Medicine (N.S.), University of Malaya, Kuala Lumpur, Malaysia; Department of Neurology (G.G.), University Hospital of Modena, Italy; Department of Clinical Neurophysiology (Y.P.), Reference Centre for NMD, CHU Nantes, Nantes, France; Department of Neurology (J.B.), Saarland University Medical School, Homburg (previous hospital), and MVZ Pfalzklinikum (J.B.), Kusel, Germany (current hospital); Department of Neurology (K.K., R.P.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (C.M.), Hospital Británico, Buenos Aires, Argentina; Department of Neurology (M.J.S.T.), Hospital Marques de Valdecilla, Santander; Department of Neurology (L.Q., L.M.-A.), Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, CIBERER and ERN-NMD, Spain; Department of Neurology (Y.W.), Affiliated Hospital of Jining Medical University, Shandong Province, China; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Research Hospital, Milan University, Italy; Nuffield Department of Clinical Neurosciences (S.R.), University of Oxford and Oxford University Hospitals NHS Foundation Trust, United Kingdom; Department of Neurosciences, Ophthalmology, Rehabilitation, Genetics and Maternal Sciences (A.S.), University of Genova, and IRCCS San Martino Hospital (A.S.), Genova, Italy; Department of Neurology (J.P.), Hospital Clínico de Santiago, Travesia Choupana, Santiago de Compostela (A Coruña), Spain; Department of Neurology (F.H.V.), Franciscus Gasthuis & Vlietland (location: Franciscus Gasthuis), Rotterdam, the Netherlands; Department of Neurology (W.W., N.K.), University of Vermont Medical Centre, Burlington; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (V.G., B.S.), Montefiore Medical Center, Bronx, NY; Department of Neurology (G.C.), University Milano-Bicocca, Monza, Italy; Department of Neurology (G.G.-G.), Hospital Universitario Infanta Sofía, San Sebastián de los Reyes, Spain; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, FLENI, Buenos Aires, Argentina; Department of Neurology (H.D.K.), University Health Network, University of Toronto, Ontario, Canada; Department of Neurology (E.D.), University Hospital of Larissa, Greece; Department of Neurology (S. Attarian), Reference Centre for NMD, CHU Timone ERN NMD, Marseille, France; Department of Neurology (A.J.v.d.K., F.E.), Amsterdam University Medical Centre, University of Amsterdam, Neuroscience Institute; Department of Neurology (J.P.A.S.), Maasstad Hospital, Rotterdam; Department of Neurology (H.J.G.), Reinier de Graaf Hospital, Reinier de Graafweg, Delft, the Netherlands; Department of Neurology (R.D.M.H.), King's College Hospital, Denmark Hill, London; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, United Kingdom; Department of Neurology (K.A.S.), University of Texas Health Science Centre at Houston; Department of Biology (N.K., S. Karafiath), Utah Valley University, Orem; Department of Neurology (M.V.), Lahey Hospital and Medical Center, Tufts University School of Medicine, Burlington, MA; Department of Neurology, Mental Health and Sensory Organs (NESMOS) (G.A.), Faculty of Medicine and Psychology, University of Rome 'Sapienza,' Sant' Andrea Hospital, Italy; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Alberta, Canada; Department of Neurology (C.F.), Maastricht University Medical Centre, the Netherlands; Department of Neurology (M.B.), Leeds Teaching Hospitals; Department of Neurology (R.C.R.), Addenbrooke's Hospital, Cambridge, United Kingdom; Department of Neurology (N.J.S.), University at Buffalo Jacobs School of Medicine and Biomedical Sciences, NY; Department of Neurology (R.F.), Scientific Institute San Raffaele, Milano, Italy; Department of Neurology (G.W.v.D.), Canisius Wilhelmina Hospital, Nijmegen; Department of Neurology (M.P.J.G.), Jeroen Bosch Hospital, 's-Hertogenbosch; Department of Neurology (J.V.), Leiden University Medical Centre; and Department of Immunology (B.C.J.), Erasmus MC, University Medical Centre Rotterdam, the Netherlands.; Wirtz PW; From the Department of Neurology (H.A.-H., H.A., T.H.), Aarhus University Hospital, Denmark; Department of Neurology (A.Y.D., B.v.d.B., C.V., J.R., S.E.L., S. Arends, L.W.G.L., K.K., B.C.J.), Erasmus MC, University Medical Centre Rotterdam, the Netherlands; Department of Neurology (A.M.S.), University of Michigan School of Medicine, Ann Arbor; Department of Neurology (S.A.Z.), University of Pittsburgh Medical Center, PA; Department of Neurology (H.J.W., A.D.), College of Medical, Veterinary and Life Sciences, University of Glasgow, United Kingdom; Department of Neurology (D.R.C.), Johns Hopkins University School of Medicine, Baltimore, MD; Department of Neurology (K.C.G.), St. Elizabeth's Medical Centre, Tufts University, School of Medicine, Boston, MA; Laboratory of Gut-Brain Signaling (Z.I.); Laboratory Sciences and Services Division (LSSD) (Z.I.), icddr,b; National Institute of Neurosciences and Hospital (Q.D.M.), Dhaka, Bangladesh; Department of Neurology (S.H.S.), Odense University Hospital and University of Southern Denmark; Department of Neurology (S. Kusunoki), Kindai University Faculty of Medicine, Osaka-Sayama City, Japan; Department of Neurology (C.C.), Neuromuscular Unit, Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Division of Neurology (K.B.), Department of Medicine, Groote Schuur Hospital, University of Cape Town, South Africa; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, United Kingdom; Department of Neurology (B.v.d.B., H.K.), Franciscus Gasthuis & Vlietland (location: Vlietland Hospital), Schiedam; Department of Neurology (S. Arends, P.W.W.), Haga Hospital, Den Haag; Department of Neurology (L.W.G.L., L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (S. Kuwabara), Chiba University, Chuo-ku, Japan; Department of Neurology (P.V.d.B.), Neuromuscular Reference Centre, University Hospital Saint-Luc, University of Louvain, Brussels, Belgium; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Dysimmune Neuropathies Unit (G.A.M.), Department of Systems Medicine, Tor Vergata University Hospital, Rome, Italy; Department of Medicine (N.S.), University of Malaya, Kuala Lumpur, Malaysia; Department of Neurology (G.G.), University Hospital of Modena, Italy; Department of Clinical Neurophysiology (Y.P.), Reference Centre for NMD, CHU Nantes, Nantes, France; Department of Neurology (J.B.), Saarland University Medical School, Homburg (previous hospital), and MVZ Pfalzklinikum (J.B.), Kusel, Germany (current hospital); Department of Neurology (K.K., R.P.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (C.M.), Hospital Británico, Buenos Aires, Argentina; Department of Neurology (M.J.S.T.), Hospital Marques de Valdecilla, Santander; Department of Neurology (L.Q., L.M.-A.), Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, CIBERER and ERN-NMD, Spain; Department of Neurology (Y.W.), Affiliated Hospital of Jining Medical University, Shandong Province, China; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Research Hospital, Milan University, Italy; Nuffield Department of Clinical Neurosciences (S.R.), University of Oxford and Oxford University Hospitals NHS Foundation Trust, United Kingdom; Department of Neurosciences, Ophthalmology, Rehabilitation, Genetics and Maternal Sciences (A.S.), University of Genova, and IRCCS San Martino Hospital (A.S.), Genova, Italy; Department of Neurology (J.P.), Hospital Clínico de Santiago, Travesia Choupana, Santiago de Compostela (A Coruña), Spain; Department of Neurology (F.H.V.), Franciscus Gasthuis & Vlietland (location: Franciscus Gasthuis), Rotterdam, the Netherlands; Department of Neurology (W.W., N.K.), University of Vermont Medical Centre, Burlington; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (V.G., B.S.), Montefiore Medical Center, Bronx, NY; Department of Neurology (G.C.), University Milano-Bicocca, Monza, Italy; Department of Neurology (G.G.-G.), Hospital Universitario Infanta Sofía, San Sebastián de los Reyes, Spain; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, FLENI, Buenos Aires, Argentina; Department of Neurology (H.D.K.), University Health Network, University of Toronto, Ontario, Canada; Department of Neurology (E.D.), University Hospital of Larissa, Greece; Department of Neurology (S. Attarian), Reference Centre for NMD, CHU Timone ERN NMD, Marseille, France; Department of Neurology (A.J.v.d.K., F.E.), Amsterdam University Medical Centre, University of Amsterdam, Neuroscience Institute; Department of Neurology (J.P.A.S.), Maasstad Hospital, Rotterdam; Department of Neurology (H.J.G.), Reinier de Graaf Hospital, Reinier de Graafweg, Delft, the Netherlands; Department of Neurology (R.D.M.H.), King's College Hospital, Denmark Hill, London; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, United Kingdom; Department of Neurology (K.A.S.), University of Texas Health Science Centre at Houston; Department of Biology (N.K., S. Karafiath), Utah Valley University, Orem; Department of Neurology (M.V.), Lahey Hospital and Medical Center, Tufts University School of Medicine, Burlington, MA; Department of Neurology, Mental Health and Sensory Organs (NESMOS) (G.A.), Faculty of Medicine and Psychology, University of Rome 'Sapienza,' Sant' Andrea Hospital, Italy; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Alberta, Canada; Department of Neurology (C.F.), Maastricht University Medical Centre, the Netherlands; Department of Neurology (M.B.), Leeds Teaching Hospitals; Department of Neurology (R.C.R.), Addenbrooke's Hospital, Cambridge, United Kingdom; Department of Neurology (N.J.S.), University at Buffalo Jacobs School of Medicine and Biomedical Sciences, NY; Department of Neurology (R.F.), Scientific Institute San Raffaele, Milano, Italy; Department of Neurology (G.W.v.D.), Canisius Wilhelmina Hospital, Nijmegen; Department of Neurology (M.P.J.G.), Jeroen Bosch Hospital, 's-Hertogenbosch; Department of Neurology (J.V.), Leiden University Medical Centre; and Department of Immunology (B.C.J.), Erasmus MC, University Medical Centre Rotterdam, the Netherlands.; Samijn JPA; From the Department of Neurology (H.A.-H., H.A., T.H.), Aarhus University Hospital, Denmark; Department of Neurology (A.Y.D., B.v.d.B., C.V., J.R., S.E.L., S. Arends, L.W.G.L., K.K., B.C.J.), Erasmus MC, University Medical Centre Rotterdam, the Netherlands; Department of Neurology (A.M.S.), University of Michigan School of Medicine, Ann Arbor; Department of Neurology (S.A.Z.), University of Pittsburgh Medical Center, PA; Department of Neurology (H.J.W., A.D.), College of Medical, Veterinary and Life Sciences, University of Glasgow, United Kingdom; Department of Neurology (D.R.C.), Johns Hopkins University School of Medicine, Baltimore, MD; Department of Neurology (K.C.G.), St. Elizabeth's Medical Centre, Tufts University, School of Medicine, Boston, MA; Laboratory of Gut-Brain Signaling (Z.I.); Laboratory Sciences and Services Division (LSSD) (Z.I.), icddr,b; National Institute of Neurosciences and Hospital (Q.D.M.), Dhaka, Bangladesh; Department of Neurology (S.H.S.), Odense University Hospital and University of Southern Denmark; Department of Neurology (S. Kusunoki), Kindai University Faculty of Medicine, Osaka-Sayama City, Japan; Department of Neurology (C.C.), Neuromuscular Unit, Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Division of Neurology (K.B.), Department of Medicine, Groote Schuur Hospital, University of Cape Town, South Africa; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, United Kingdom; Department of Neurology (B.v.d.B., H.K.), Franciscus Gasthuis & Vlietland (location: Vlietland Hospital), Schiedam; Department of Neurology (S. Arends, P.W.W.), Haga Hospital, Den Haag; Department of Neurology (L.W.G.L., L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (S. Kuwabara), Chiba University, Chuo-ku, Japan; Department of Neurology (P.V.d.B.), Neuromuscular Reference Centre, University Hospital Saint-Luc, University of Louvain, Brussels, Belgium; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Dysimmune Neuropathies Unit (G.A.M.), Department of Systems Medicine, Tor Vergata University Hospital, Rome, Italy; Department of Medicine (N.S.), University of Malaya, Kuala Lumpur, Malaysia; Department of Neurology (G.G.), University Hospital of Modena, Italy; Department of Clinical Neurophysiology (Y.P.), Reference Centre for NMD, CHU Nantes, Nantes, France; Department of Neurology (J.B.), Saarland University Medical School, Homburg (previous hospital), and MVZ Pfalzklinikum (J.B.), Kusel, Germany (current hospital); Department of Neurology (K.K., R.P.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (C.M.), Hospital Británico, Buenos Aires, Argentina; Department of Neurology (M.J.S.T.), Hospital Marques de Valdecilla, Santander; Department of Neurology (L.Q., L.M.-A.), Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, CIBERER and ERN-NMD, Spain; Department of Neurology (Y.W.), Affiliated Hospital of Jining Medical University, Shandong Province, China; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Research Hospital, Milan University, Italy; Nuffield Department of Clinical Neurosciences (S.R.), University of Oxford and Oxford University Hospitals NHS Foundation Trust, United Kingdom; Department of Neurosciences, Ophthalmology, Rehabilitation, Genetics and Maternal Sciences (A.S.), University of Genova, and IRCCS San Martino Hospital (A.S.), Genova, Italy; Department of Neurology (J.P.), Hospital Clínico de Santiago, Travesia Choupana, Santiago de Compostela (A Coruña), Spain; Department of Neurology (F.H.V.), Franciscus Gasthuis & Vlietland (location: Franciscus Gasthuis), Rotterdam, the Netherlands; Department of Neurology (W.W., N.K.), University of Vermont Medical Centre, Burlington; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (V.G., B.S.), Montefiore Medical Center, Bronx, NY; Department of Neurology (G.C.), University Milano-Bicocca, Monza, Italy; Department of Neurology (G.G.-G.), Hospital Universitario Infanta Sofía, San Sebastián de los Reyes, Spain; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, FLENI, Buenos Aires, Argentina; Department of Neurology (H.D.K.), University Health Network, University of Toronto, Ontario, Canada; Department of Neurology (E.D.), University Hospital of Larissa, Greece; Department of Neurology (S. Attarian), Reference Centre for NMD, CHU Timone ERN NMD, Marseille, France; Department of Neurology (A.J.v.d.K., F.E.), Amsterdam University Medical Centre, University of Amsterdam, Neuroscience Institute; Department of Neurology (J.P.A.S.), Maasstad Hospital, Rotterdam; Department of Neurology (H.J.G.), Reinier de Graaf Hospital, Reinier de Graafweg, Delft, the Netherlands; Department of Neurology (R.D.M.H.), King's College Hospital, Denmark Hill, London; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, United Kingdom; Department of Neurology (K.A.S.), University of Texas Health Science Centre at Houston; Department of Biology (N.K., S. Karafiath), Utah Valley University, Orem; Department of Neurology (M.V.), Lahey Hospital and Medical Center, Tufts University School of Medicine, Burlington, MA; Department of Neurology, Mental Health and Sensory Organs (NESMOS) (G.A.), Faculty of Medicine and Psychology, University of Rome 'Sapienza,' Sant' Andrea Hospital, Italy; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Alberta, Canada; Department of Neurology (C.F.), Maastricht University Medical Centre, the Netherlands; Department of Neurology (M.B.), Leeds Teaching Hospitals; Department of Neurology (R.C.R.), Addenbrooke's Hospital, Cambridge, United Kingdom; Department of Neurology (N.J.S.), University at Buffalo Jacobs School of Medicine and Biomedical Sciences, NY; Department of Neurology (R.F.), Scientific Institute San Raffaele, Milano, Italy; Department of Neurology (G.W.v.D.), Canisius Wilhelmina Hospital, Nijmegen; Department of Neurology (M.P.J.G.), Jeroen Bosch Hospital, 's-Hertogenbosch; Department of Neurology (J.V.), Leiden University Medical Centre; and Department of Immunology (B.C.J.), Erasmus MC, University Medical Centre Rotterdam, the Netherlands.; Gilhuis HJ; From the Department of Neurology (H.A.-H., H.A., T.H.), Aarhus University Hospital, Denmark; Department of Neurology (A.Y.D., B.v.d.B., C.V., J.R., S.E.L., S. Arends, L.W.G.L., K.K., B.C.J.), Erasmus MC, University Medical Centre Rotterdam, the Netherlands; Department of Neurology (A.M.S.), University of Michigan School of Medicine, Ann Arbor; Department of Neurology (S.A.Z.), University of Pittsburgh Medical Center, PA; Department of Neurology (H.J.W., A.D.), College of Medical, Veterinary and Life Sciences, University of Glasgow, United Kingdom; Department of Neurology (D.R.C.), Johns Hopkins University School of Medicine, Baltimore, MD; Department of Neurology (K.C.G.), St. Elizabeth's Medical Centre, Tufts University, School of Medicine, Boston, MA; Laboratory of Gut-Brain Signaling (Z.I.); Laboratory Sciences and Services Division (LSSD) (Z.I.), icddr,b; National Institute of Neurosciences and Hospital (Q.D.M.), Dhaka, Bangladesh; Department of Neurology (S.H.S.), Odense University Hospital and University of Southern Denmark; Department of Neurology (S. Kusunoki), Kindai University Faculty of Medicine, Osaka-Sayama City, Japan; Department of Neurology (C.C.), Neuromuscular Unit, Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Division of Neurology (K.B.), Department of Medicine, Groote Schuur Hospital, University of Cape Town, South Africa; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, United Kingdom; Department of Neurology (B.v.d.B., H.K.), Franciscus Gasthuis & Vlietland (location: Vlietland Hospital), Schiedam; Department of Neurology (S. Arends, P.W.W.), Haga Hospital, Den Haag; Department of Neurology (L.W.G.L., L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (S. Kuwabara), Chiba University, Chuo-ku, Japan; Department of Neurology (P.V.d.B.), Neuromuscular Reference Centre, University Hospital Saint-Luc, University of Louvain, Brussels, Belgium; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Dysimmune Neuropathies Unit (G.A.M.), Department of Systems Medicine, Tor Vergata University Hospital, Rome, Italy; Department of Medicine (N.S.), University of Malaya, Kuala Lumpur, Malaysia; Department of Neurology (G.G.), University Hospital of Modena, Italy; Department of Clinical Neurophysiology (Y.P.), Reference Centre for NMD, CHU Nantes, Nantes, France; Department of Neurology (J.B.), Saarland University Medical School, Homburg (previous hospital), and MVZ Pfalzklinikum (J.B.), Kusel, Germany (current hospital); Department of Neurology (K.K., R.P.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (C.M.), Hospital Británico, Buenos Aires, Argentina; Department of Neurology (M.J.S.T.), Hospital Marques de Valdecilla, Santander; Department of Neurology (L.Q., L.M.-A.), Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, CIBERER and ERN-NMD, Spain; Department of Neurology (Y.W.), Affiliated Hospital of Jining Medical University, Shandong Province, China; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Research Hospital, Milan University, Italy; Nuffield Department of Clinical Neurosciences (S.R.), University of Oxford and Oxford University Hospitals NHS Foundation Trust, United Kingdom; Department of Neurosciences, Ophthalmology, Rehabilitation, Genetics and Maternal Sciences (A.S.), University of Genova, and IRCCS San Martino Hospital (A.S.), Genova, Italy; Department of Neurology (J.P.), Hospital Clínico de Santiago, Travesia Choupana, Santiago de Compostela (A Coruña), Spain; Department of Neurology (F.H.V.), Franciscus Gasthuis & Vlietland (location: Franciscus Gasthuis), Rotterdam, the Netherlands; Department of Neurology (W.W., N.K.), University of Vermont Medical Centre, Burlington; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (V.G., B.S.), Montefiore Medical Center, Bronx, NY; Department of Neurology (G.C.), University Milano-Bicocca, Monza, Italy; Department of Neurology (G.G.-G.), Hospital Universitario Infanta Sofía, San Sebastián de los Reyes, Spain; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, FLENI, Buenos Aires, Argentina; Department of Neurology (H.D.K.), University Health Network, University of Toronto, Ontario, Canada; Department of Neurology (E.D.), University Hospital of Larissa, Greece; Department of Neurology (S. Attarian), Reference Centre for NMD, CHU Timone ERN NMD, Marseille, France; Department of Neurology (A.J.v.d.K., F.E.), Amsterdam University Medical Centre, University of Amsterdam, Neuroscience Institute; Department of Neurology (J.P.A.S.), Maasstad Hospital, Rotterdam; Department of Neurology (H.J.G.), Reinier de Graaf Hospital, Reinier de Graafweg, Delft, the Netherlands; Department of Neurology (R.D.M.H.), King's College Hospital, Denmark Hill, London; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, United Kingdom; Department of Neurology (K.A.S.), University of Texas Health Science Centre at Houston; Department of Biology (N.K., S. Karafiath), Utah Valley University, Orem; Department of Neurology (M.V.), Lahey Hospital and Medical Center, Tufts University School of Medicine, Burlington, MA; Department of Neurology, Mental Health and Sensory Organs (NESMOS) (G.A.), Faculty of Medicine and Psychology, University of Rome 'Sapienza,' Sant' Andrea Hospital, Italy; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Alberta, Canada; Department of Neurology (C.F.), Maastricht University Medical Centre, the Netherlands; Department of Neurology (M.B.), Leeds Teaching Hospitals; Department of Neurology (R.C.R.), Addenbrooke's Hospital, Cambridge, United Kingdom; Department of Neurology (N.J.S.), University at Buffalo Jacobs School of Medicine and Biomedical Sciences, NY; Department of Neurology (R.F.), Scientific Institute San Raffaele, Milano, Italy; Department of Neurology (G.W.v.D.), Canisius Wilhelmina Hospital, Nijmegen; Department of Neurology (M.P.J.G.), Jeroen Bosch Hospital, 's-Hertogenbosch; Department of Neurology (J.V.), Leiden University Medical Centre; and Department of Immunology (B.C.J.), Erasmus MC, University Medical Centre Rotterdam, the Netherlands.; Hadden RDM; From the Department of Neurology (H.A.-H., H.A., T.H.), Aarhus University Hospital, Denmark; Department of Neurology (A.Y.D., B.v.d.B., C.V., J.R., S.E.L., S. Arends, L.W.G.L., K.K., B.C.J.), Erasmus MC, University Medical Centre Rotterdam, the Netherlands; Department of Neurology (A.M.S.), University of Michigan School of Medicine, Ann Arbor; Department of Neurology (S.A.Z.), University of Pittsburgh Medical Center, PA; Department of Neurology (H.J.W., A.D.), College of Medical, Veterinary and Life Sciences, University of Glasgow, United Kingdom; Department of Neurology (D.R.C.), Johns Hopkins University School of Medicine, Baltimore, MD; Department of Neurology (K.C.G.), St. Elizabeth's Medical Centre, Tufts University, School of Medicine, Boston, MA; Laboratory of Gut-Brain Signaling (Z.I.); Laboratory Sciences and Services Division (LSSD) (Z.I.), icddr,b; National Institute of Neurosciences and Hospital (Q.D.M.), Dhaka, Bangladesh; Department of Neurology (S.H.S.), Odense University Hospital and University of Southern Denmark; Department of Neurology (S. Kusunoki), Kindai University Faculty of Medicine, Osaka-Sayama City, Japan; Department of Neurology (C.C.), Neuromuscular Unit, Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Division of Neurology (K.B.), Department of Medicine, Groote Schuur Hospital, University of Cape Town, South Africa; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, United Kingdom; Department of Neurology (B.v.d.B., H.K.), Franciscus Gasthuis & Vlietland (location: Vlietland Hospital), Schiedam; Department of Neurology (S. Arends, P.W.W.), Haga Hospital, Den Haag; Department of Neurology (L.W.G.L., L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (S. Kuwabara), Chiba University, Chuo-ku, Japan; Department of Neurology (P.V.d.B.), Neuromuscular Reference Centre, University Hospital Saint-Luc, University of Louvain, Brussels, Belgium; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Dysimmune Neuropathies Unit (G.A.M.), Department of Systems Medicine, Tor Vergata University Hospital, Rome, Italy; Department of Medicine (N.S.), University of Malaya, Kuala Lumpur, Malaysia; Department of Neurology (G.G.), University Hospital of Modena, Italy; Department of Clinical Neurophysiology (Y.P.), Reference Centre for NMD, CHU Nantes, Nantes, France; Department of Neurology (J.B.), Saarland University Medical School, Homburg (previous hospital), and MVZ Pfalzklinikum (J.B.), Kusel, Germany (current hospital); Department of Neurology (K.K., R.P.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (C.M.), Hospital Británico, Buenos Aires, Argentina; Department of Neurology (M.J.S.T.), Hospital Marques de Valdecilla, Santander; Department of Neurology (L.Q., L.M.-A.), Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, CIBERER and ERN-NMD, Spain; Department of Neurology (Y.W.), Affiliated Hospital of Jining Medical University, Shandong Province, China; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Research Hospital, Milan University, Italy; Nuffield Department of Clinical Neurosciences (S.R.), University of Oxford and Oxford University Hospitals NHS Foundation Trust, United Kingdom; Department of Neurosciences, Ophthalmology, Rehabilitation, Genetics and Maternal Sciences (A.S.), University of Genova, and IRCCS San Martino Hospital (A.S.), Genova, Italy; Department of Neurology (J.P.), Hospital Clínico de Santiago, Travesia Choupana, Santiago de Compostela (A Coruña), Spain; Department of Neurology (F.H.V.), Franciscus Gasthuis & Vlietland (location: Franciscus Gasthuis), Rotterdam, the Netherlands; Department of Neurology (W.W., N.K.), University of Vermont Medical Centre, Burlington; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (V.G., B.S.), Montefiore Medical Center, Bronx, NY; Department of Neurology (G.C.), University Milano-Bicocca, Monza, Italy; Department of Neurology (G.G.-G.), Hospital Universitario Infanta Sofía, San Sebastián de los Reyes, Spain; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, FLENI, Buenos Aires, Argentina; Department of Neurology (H.D.K.), University Health Network, University of Toronto, Ontario, Canada; Department of Neurology (E.D.), University Hospital of Larissa, Greece; Department of Neurology (S. Attarian), Reference Centre for NMD, CHU Timone ERN NMD, Marseille, France; Department of Neurology (A.J.v.d.K., F.E.), Amsterdam University Medical Centre, University of Amsterdam, Neuroscience Institute; Department of Neurology (J.P.A.S.), Maasstad Hospital, Rotterdam; Department of Neurology (H.J.G.), Reinier de Graaf Hospital, Reinier de Graafweg, Delft, the Netherlands; Department of Neurology (R.D.M.H.), King's College Hospital, Denmark Hill, London; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, United Kingdom; Department of Neurology (K.A.S.), University of Texas Health Science Centre at Houston; Department of Biology (N.K., S. Karafiath), Utah Valley University, Orem; Department of Neurology (M.V.), Lahey Hospital and Medical Center, Tufts University School of Medicine, Burlington, MA; Department of Neurology, Mental Health and Sensory Organs (NESMOS) (G.A.), Faculty of Medicine and Psychology, University of Rome 'Sapienza,' Sant' Andrea Hospital, Italy; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Alberta, Canada; Department of Neurology (C.F.), Maastricht University Medical Centre, the Netherlands; Department of Neurology (M.B.), Leeds Teaching Hospitals; Department of Neurology (R.C.R.), Addenbrooke's Hospital, Cambridge, United Kingdom; Department of Neurology (N.J.S.), University at Buffalo Jacobs School of Medicine and Biomedical Sciences, NY; Department of Neurology (R.F.), Scientific Institute San Raffaele, Milano, Italy; Department of Neurology (G.W.v.D.), Canisius Wilhelmina Hospital, Nijmegen; Department of Neurology (M.P.J.G.), Jeroen Bosch Hospital, 's-Hertogenbosch; Department of Neurology (J.V.), Leiden University Medical Centre; and Department of Immunology (B.C.J.), Erasmus MC, University Medical Centre Rotterdam, the Netherlands.; Holt JKL; From the Department of Neurology (H.A.-H., H.A., T.H.), Aarhus University Hospital, Denmark; Department of Neurology (A.Y.D., B.v.d.B., C.V., J.R., S.E.L., S. Arends, L.W.G.L., K.K., B.C.J.), Erasmus MC, University Medical Centre Rotterdam, the Netherlands; Department of Neurology (A.M.S.), University of Michigan School of Medicine, Ann Arbor; Department of Neurology (S.A.Z.), University of Pittsburgh Medical Center, PA; Department of Neurology (H.J.W., A.D.), College of Medical, Veterinary and Life Sciences, University of Glasgow, United Kingdom; Department of Neurology (D.R.C.), Johns Hopkins University School of Medicine, Baltimore, MD; Department of Neurology (K.C.G.), St. Elizabeth's Medical Centre, Tufts University, School of Medicine, Boston, MA; Laboratory of Gut-Brain Signaling (Z.I.); Laboratory Sciences and Services Division (LSSD) (Z.I.), icddr,b; National Institute of Neurosciences and Hospital (Q.D.M.), Dhaka, Bangladesh; Department of Neurology (S.H.S.), Odense University Hospital and University of Southern Denmark; Department of Neurology (S. Kusunoki), Kindai University Faculty of Medicine, Osaka-Sayama City, Japan; Department of Neurology (C.C.), Neuromuscular Unit, Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Division of Neurology (K.B.), Department of Medicine, Groote Schuur Hospital, University of Cape Town, South Africa; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, United Kingdom; Department of Neurology (B.v.d.B., H.K.), Franciscus Gasthuis & Vlietland (location: Vlietland Hospital), Schiedam; Department of Neurology (S. Arends, P.W.W.), Haga Hospital, Den Haag; Department of Neurology (L.W.G.L., L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (S. Kuwabara), Chiba University, Chuo-ku, Japan; Department of Neurology (P.V.d.B.), Neuromuscular Reference Centre, University Hospital Saint-Luc, University of Louvain, Brussels, Belgium; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Dysimmune Neuropathies Unit (G.A.M.), Department of Systems Medicine, Tor Vergata University Hospital, Rome, Italy; Department of Medicine (N.S.), University of Malaya, Kuala Lumpur, Malaysia; Department of Neurology (G.G.), University Hospital of Modena, Italy; Department of Clinical Neurophysiology (Y.P.), Reference Centre for NMD, CHU Nantes, Nantes, France; Department of Neurology (J.B.), Saarland University Medical School, Homburg (previous hospital), and MVZ Pfalzklinikum (J.B.), Kusel, Germany (current hospital); Department of Neurology (K.K., R.P.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (C.M.), Hospital Británico, Buenos Aires, Argentina; Department of Neurology (M.J.S.T.), Hospital Marques de Valdecilla, Santander; Department of Neurology (L.Q., L.M.-A.), Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, CIBERER and ERN-NMD, Spain; Department of Neurology (Y.W.), Affiliated Hospital of Jining Medical University, Shandong Province, China; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Research Hospital, Milan University, Italy; Nuffield Department of Clinical Neurosciences (S.R.), University of Oxford and Oxford University Hospitals NHS Foundation Trust, United Kingdom; Department of Neurosciences, Ophthalmology, Rehabilitation, Genetics and Maternal Sciences (A.S.), University of Genova, and IRCCS San Martino Hospital (A.S.), Genova, Italy; Department of Neurology (J.P.), Hospital Clínico de Santiago, Travesia Choupana, Santiago de Compostela (A Coruña), Spain; Department of Neurology (F.H.V.), Franciscus Gasthuis & Vlietland (location: Franciscus Gasthuis), Rotterdam, the Netherlands; Department of Neurology (W.W., N.K.), University of Vermont Medical Centre, Burlington; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (V.G., B.S.), Montefiore Medical Center, Bronx, NY; Department of Neurology (G.C.), University Milano-Bicocca, Monza, Italy; Department of Neurology (G.G.-G.), Hospital Universitario Infanta Sofía, San Sebastián de los Reyes, Spain; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, FLENI, Buenos Aires, Argentina; Department of Neurology (H.D.K.), University Health Network, University of Toronto, Ontario, Canada; Department of Neurology (E.D.), University Hospital of Larissa, Greece; Department of Neurology (S. Attarian), Reference Centre for NMD, CHU Timone ERN NMD, Marseille, France; Department of Neurology (A.J.v.d.K., F.E.), Amsterdam University Medical Centre, University of Amsterdam, Neuroscience Institute; Department of Neurology (J.P.A.S.), Maasstad Hospital, Rotterdam; Department of Neurology (H.J.G.), Reinier de Graaf Hospital, Reinier de Graafweg, Delft, the Netherlands; Department of Neurology (R.D.M.H.), King's College Hospital, Denmark Hill, London; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, United Kingdom; Department of Neurology (K.A.S.), University of Texas Health Science Centre at Houston; Department of Biology (N.K., S. Karafiath), Utah Valley University, Orem; Department of Neurology (M.V.), Lahey Hospital and Medical Center, Tufts University School of Medicine, Burlington, MA; Department of Neurology, Mental Health and Sensory Organs (NESMOS) (G.A.), Faculty of Medicine and Psychology, University of Rome 'Sapienza,' Sant' Andrea Hospital, Italy; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Alberta, Canada; Department of Neurology (C.F.), Maastricht University Medical Centre, the Netherlands; Department of Neurology (M.B.), Leeds Teaching Hospitals; Department of Neurology (R.C.R.), Addenbrooke's Hospital, Cambridge, United Kingdom; Department of Neurology (N.J.S.), University at Buffalo Jacobs School of Medicine and Biomedical Sciences, NY; Department of Neurology (R.F.), Scientific Institute San Raffaele, Milano, Italy; Department of Neurology (G.W.v.D.), Canisius Wilhelmina Hospital, Nijmegen; Department of Neurology (M.P.J.G.), Jeroen Bosch Hospital, 's-Hertogenbosch; Department of Neurology (J.V.), Leiden University Medical Centre; and Department of Immunology (B.C.J.), Erasmus MC, University Medical Centre Rotterdam, the Netherlands.; Sheikh KA; From the Department of Neurology (H.A.-H., H.A., T.H.), Aarhus University Hospital, Denmark; Department of Neurology (A.Y.D., B.v.d.B., C.V., J.R., S.E.L., S. Arends, L.W.G.L., K.K., B.C.J.), Erasmus MC, University Medical Centre Rotterdam, the Netherlands; Department of Neurology (A.M.S.), University of Michigan School of Medicine, Ann Arbor; Department of Neurology (S.A.Z.), University of Pittsburgh Medical Center, PA; Department of Neurology (H.J.W., A.D.), College of Medical, Veterinary and Life Sciences, University of Glasgow, United Kingdom; Department of Neurology (D.R.C.), Johns Hopkins University School of Medicine, Baltimore, MD; Department of Neurology (K.C.G.), St. Elizabeth's Medical Centre, Tufts University, School of Medicine, Boston, MA; Laboratory of Gut-Brain Signaling (Z.I.); Laboratory Sciences and Services Division (LSSD) (Z.I.), icddr,b; National Institute of Neurosciences and Hospital (Q.D.M.), Dhaka, Bangladesh; Department of Neurology (S.H.S.), Odense University Hospital and University of Southern Denmark; Department of Neurology (S. Kusunoki), Kindai University Faculty of Medicine, Osaka-Sayama City, Japan; Department of Neurology (C.C.), Neuromuscular Unit, Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Division of Neurology (K.B.), Department of Medicine, Groote Schuur Hospital, University of Cape Town, South Africa; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, United Kingdom; Department of Neurology (B.v.d.B., H.K.), Franciscus Gasthuis & Vlietland (location: Vlietland Hospital), Schiedam; Department of Neurology (S. Arends, P.W.W.), Haga Hospital, Den Haag; Department of Neurology (L.W.G.L., L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (S. Kuwabara), Chiba University, Chuo-ku, Japan; Department of Neurology (P.V.d.B.), Neuromuscular Reference Centre, University Hospital Saint-Luc, University of Louvain, Brussels, Belgium; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Dysimmune Neuropathies Unit (G.A.M.), Department of Systems Medicine, Tor Vergata University Hospital, Rome, Italy; Department of Medicine (N.S.), University of Malaya, Kuala Lumpur, Malaysia; Department of Neurology (G.G.), University Hospital of Modena, Italy; Department of Clinical Neurophysiology (Y.P.), Reference Centre for NMD, CHU Nantes, Nantes, France; Department of Neurology (J.B.), Saarland University Medical School, Homburg (previous hospital), and MVZ Pfalzklinikum (J.B.), Kusel, Germany (current hospital); Department of Neurology (K.K., R.P.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (C.M.), Hospital Británico, Buenos Aires, Argentina; Department of Neurology (M.J.S.T.), Hospital Marques de Valdecilla, Santander; Department of Neurology (L.Q., L.M.-A.), Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, CIBERER and ERN-NMD, Spain; Department of Neurology (Y.W.), Affiliated Hospital of Jining Medical University, Shandong Province, China; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Research Hospital, Milan University, Italy; Nuffield Department of Clinical Neurosciences (S.R.), University of Oxford and Oxford University Hospitals NHS Foundation Trust, United Kingdom; Department of Neurosciences, Ophthalmology, Rehabilitation, Genetics and Maternal Sciences (A.S.), University of Genova, and IRCCS San Martino Hospital (A.S.), Genova, Italy; Department of Neurology (J.P.), Hospital Clínico de Santiago, Travesia Choupana, Santiago de Compostela (A Coruña), Spain; Department of Neurology (F.H.V.), Franciscus Gasthuis & Vlietland (location: Franciscus Gasthuis), Rotterdam, the Netherlands; Department of Neurology (W.W., N.K.), University of Vermont Medical Centre, Burlington; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (V.G., B.S.), Montefiore Medical Center, Bronx, NY; Department of Neurology (G.C.), University Milano-Bicocca, Monza, Italy; Department of Neurology (G.G.-G.), Hospital Universitario Infanta Sofía, San Sebastián de los Reyes, Spain; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, FLENI, Buenos Aires, Argentina; Department of Neurology (H.D.K.), University Health Network, University of Toronto, Ontario, Canada; Department of Neurology (E.D.), University Hospital of Larissa, Greece; Department of Neurology (S. Attarian), Reference Centre for NMD, CHU Timone ERN NMD, Marseille, France; Department of Neurology (A.J.v.d.K., F.E.), Amsterdam University Medical Centre, University of Amsterdam, Neuroscience Institute; Department of Neurology (J.P.A.S.), Maasstad Hospital, Rotterdam; Department of Neurology (H.J.G.), Reinier de Graaf Hospital, Reinier de Graafweg, Delft, the Netherlands; Department of Neurology (R.D.M.H.), King's College Hospital, Denmark Hill, London; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, United Kingdom; Department of Neurology (K.A.S.), University of Texas Health Science Centre at Houston; Department of Biology (N.K., S. Karafiath), Utah Valley University, Orem; Department of Neurology (M.V.), Lahey Hospital and Medical Center, Tufts University School of Medicine, Burlington, MA; Department of Neurology, Mental Health and Sensory Organs (NESMOS) (G.A.), Faculty of Medicine and Psychology, University of Rome 'Sapienza,' Sant' Andrea Hospital, Italy; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Alberta, Canada; Department of Neurology (C.F.), Maastricht University Medical Centre, the Netherlands; Department of Neurology (M.B.), Leeds Teaching Hospitals; Department of Neurology (R.C.R.), Addenbrooke's Hospital, Cambridge, United Kingdom; Department of Neurology (N.J.S.), University at Buffalo Jacobs School of Medicine and Biomedical Sciences, NY; Department of Neurology (R.F.), Scientific Institute San Raffaele, Milano, Italy; Department of Neurology (G.W.v.D.), Canisius Wilhelmina Hospital, Nijmegen; Department of Neurology (M.P.J.G.), Jeroen Bosch Hospital, 's-Hertogenbosch; Department of Neurology (J.V.), Leiden University Medical Centre; and Department of Immunology (B.C.J.), Erasmus MC, University Medical Centre Rotterdam, the Netherlands.; Kolb N; From the Department of Neurology (H.A.-H., H.A., T.H.), Aarhus University Hospital, Denmark; Department of Neurology (A.Y.D., B.v.d.B., C.V., J.R., S.E.L., S. Arends, L.W.G.L., K.K., B.C.J.), Erasmus MC, University Medical Centre Rotterdam, the Netherlands; Department of Neurology (A.M.S.), University of Michigan School of Medicine, Ann Arbor; Department of Neurology (S.A.Z.), University of Pittsburgh Medical Center, PA; Department of Neurology (H.J.W., A.D.), College of Medical, Veterinary and Life Sciences, University of Glasgow, United Kingdom; Department of Neurology (D.R.C.), Johns Hopkins University School of Medicine, Baltimore, MD; Department of Neurology (K.C.G.), St. Elizabeth's Medical Centre, Tufts University, School of Medicine, Boston, MA; Laboratory of Gut-Brain Signaling (Z.I.); Laboratory Sciences and Services Division (LSSD) (Z.I.), icddr,b; National Institute of Neurosciences and Hospital (Q.D.M.), Dhaka, Bangladesh; Department of Neurology (S.H.S.), Odense University Hospital and University of Southern Denmark; Department of Neurology (S. Kusunoki), Kindai University Faculty of Medicine, Osaka-Sayama City, Japan; Department of Neurology (C.C.), Neuromuscular Unit, Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Division of Neurology (K.B.), Department of Medicine, Groote Schuur Hospital, University of Cape Town, South Africa; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, United Kingdom; Department of Neurology (B.v.d.B., H.K.), Franciscus Gasthuis & Vlietland (location: Vlietland Hospital), Schiedam; Department of Neurology (S. Arends, P.W.W.), Haga Hospital, Den Haag; Department of Neurology (L.W.G.L., L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (S. Kuwabara), Chiba University, Chuo-ku, Japan; Department of Neurology (P.V.d.B.), Neuromuscular Reference Centre, University Hospital Saint-Luc, University of Louvain, Brussels, Belgium; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Dysimmune Neuropathies Unit (G.A.M.), Department of Systems Medicine, Tor Vergata University Hospital, Rome, Italy; Department of Medicine (N.S.), University of Malaya, Kuala Lumpur, Malaysia; Department of Neurology (G.G.), University Hospital of Modena, Italy; Department of Clinical Neurophysiology (Y.P.), Reference Centre for NMD, CHU Nantes, Nantes, France; Department of Neurology (J.B.), Saarland University Medical School, Homburg (previous hospital), and MVZ Pfalzklinikum (J.B.), Kusel, Germany (current hospital); Department of Neurology (K.K., R.P.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (C.M.), Hospital Británico, Buenos Aires, Argentina; Department of Neurology (M.J.S.T.), Hospital Marques de Valdecilla, Santander; Department of Neurology (L.Q., L.M.-A.), Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, CIBERER and ERN-NMD, Spain; Department of Neurology (Y.W.), Affiliated Hospital of Jining Medical University, Shandong Province, China; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Research Hospital, Milan University, Italy; Nuffield Department of Clinical Neurosciences (S.R.), University of Oxford and Oxford University Hospitals NHS Foundation Trust, United Kingdom; Department of Neurosciences, Ophthalmology, Rehabilitation, Genetics and Maternal Sciences (A.S.), University of Genova, and IRCCS San Martino Hospital (A.S.), Genova, Italy; Department of Neurology (J.P.), Hospital Clínico de Santiago, Travesia Choupana, Santiago de Compostela (A Coruña), Spain; Department of Neurology (F.H.V.), Franciscus Gasthuis & Vlietland (location: Franciscus Gasthuis), Rotterdam, the Netherlands; Department of Neurology (W.W., N.K.), University of Vermont Medical Centre, Burlington; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (V.G., B.S.), Montefiore Medical Center, Bronx, NY; Department of Neurology (G.C.), University Milano-Bicocca, Monza, Italy; Department of Neurology (G.G.-G.), Hospital Universitario Infanta Sofía, San Sebastián de los Reyes, Spain; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, FLENI, Buenos Aires, Argentina; Department of Neurology (H.D.K.), University Health Network, University of Toronto, Ontario, Canada; Department of Neurology (E.D.), University Hospital of Larissa, Greece; Department of Neurology (S. Attarian), Reference Centre for NMD, CHU Timone ERN NMD, Marseille, France; Department of Neurology (A.J.v.d.K., F.E.), Amsterdam University Medical Centre, University of Amsterdam, Neuroscience Institute; Department of Neurology (J.P.A.S.), Maasstad Hospital, Rotterdam; Department of Neurology (H.J.G.), Reinier de Graaf Hospital, Reinier de Graafweg, Delft, the Netherlands; Department of Neurology (R.D.M.H.), King's College Hospital, Denmark Hill, London; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, United Kingdom; Department of Neurology (K.A.S.), University of Texas Health Science Centre at Houston; Department of Biology (N.K., S. Karafiath), Utah Valley University, Orem; Department of Neurology (M.V.), Lahey Hospital and Medical Center, Tufts University School of Medicine, Burlington, MA; Department of Neurology, Mental Health and Sensory Organs (NESMOS) (G.A.), Faculty of Medicine and Psychology, University of Rome 'Sapienza,' Sant' Andrea Hospital, Italy; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Alberta, Canada; Department of Neurology (C.F.), Maastricht University Medical Centre, the Netherlands; Department of Neurology (M.B.), Leeds Teaching Hospitals; Department of Neurology (R.C.R.), Addenbrooke's Hospital, Cambridge, United Kingdom; Department of Neurology (N.J.S.), University at Buffalo Jacobs School of Medicine and Biomedical Sciences, NY; Department of Neurology (R.F.), Scientific Institute San Raffaele, Milano, Italy; Department of Neurology (G.W.v.D.), Canisius Wilhelmina Hospital, Nijmegen; Department of Neurology (M.P.J.G.), Jeroen Bosch Hospital, 's-Hertogenbosch; Department of Neurology (J.V.), Leiden University Medical Centre; and Department of Immunology (B.C.J.), Erasmus MC, University Medical Centre Rotterdam, the Netherlands.; Karafiath S; From the Department of Neurology (H.A.-H., H.A., T.H.), Aarhus University Hospital, Denmark; Department of Neurology (A.Y.D., B.v.d.B., C.V., J.R., S.E.L., S. Arends, L.W.G.L., K.K., B.C.J.), Erasmus MC, University Medical Centre Rotterdam, the Netherlands; Department of Neurology (A.M.S.), University of Michigan School of Medicine, Ann Arbor; Department of Neurology (S.A.Z.), University of Pittsburgh Medical Center, PA; Department of Neurology (H.J.W., A.D.), College of Medical, Veterinary and Life Sciences, University of Glasgow, United Kingdom; Department of Neurology (D.R.C.), Johns Hopkins University School of Medicine, Baltimore, MD; Department of Neurology (K.C.G.), St. Elizabeth's Medical Centre, Tufts University, School of Medicine, Boston, MA; Laboratory of Gut-Brain Signaling (Z.I.); Laboratory Sciences and Services Division (LSSD) (Z.I.), icddr,b; National Institute of Neurosciences and Hospital (Q.D.M.), Dhaka, Bangladesh; Department of Neurology (S.H.S.), Odense University Hospital and University of Southern Denmark; Department of Neurology (S. Kusunoki), Kindai University Faculty of Medicine, Osaka-Sayama City, Japan; Department of Neurology (C.C.), Neuromuscular Unit, Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Division of Neurology (K.B.), Department of Medicine, Groote Schuur Hospital, University of Cape Town, South Africa; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, United Kingdom; Department of Neurology (B.v.d.B., H.K.), Franciscus Gasthuis & Vlietland (location: Vlietland Hospital), Schiedam; Department of Neurology (S. Arends, P.W.W.), Haga Hospital, Den Haag; Department of Neurology (L.W.G.L., L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (S. Kuwabara), Chiba University, Chuo-ku, Japan; Department of Neurology (P.V.d.B.), Neuromuscular Reference Centre, University Hospital Saint-Luc, University of Louvain, Brussels, Belgium; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Dysimmune Neuropathies Unit (G.A.M.), Department of Systems Medicine, Tor Vergata University Hospital, Rome, Italy; Department of Medicine (N.S.), University of Malaya, Kuala Lumpur, Malaysia; Department of Neurology (G.G.), University Hospital of Modena, Italy; Department of Clinical Neurophysiology (Y.P.), Reference Centre for NMD, CHU Nantes, Nantes, France; Department of Neurology (J.B.), Saarland University Medical School, Homburg (previous hospital), and MVZ Pfalzklinikum (J.B.), Kusel, Germany (current hospital); Department of Neurology (K.K., R.P.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (C.M.), Hospital Británico, Buenos Aires, Argentina; Department of Neurology (M.J.S.T.), Hospital Marques de Valdecilla, Santander; Department of Neurology (L.Q., L.M.-A.), Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, CIBERER and ERN-NMD, Spain; Department of Neurology (Y.W.), Affiliated Hospital of Jining Medical University, Shandong Province, China; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Research Hospital, Milan University, Italy; Nuffield Department of Clinical Neurosciences (S.R.), University of Oxford and Oxford University Hospitals NHS Foundation Trust, United Kingdom; Department of Neurosciences, Ophthalmology, Rehabilitation, Genetics and Maternal Sciences (A.S.), University of Genova, and IRCCS San Martino Hospital (A.S.), Genova, Italy; Department of Neurology (J.P.), Hospital Clínico de Santiago, Travesia Choupana, Santiago de Compostela (A Coruña), Spain; Department of Neurology (F.H.V.), Franciscus Gasthuis & Vlietland (location: Franciscus Gasthuis), Rotterdam, the Netherlands; Department of Neurology (W.W., N.K.), University of Vermont Medical Centre, Burlington; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (V.G., B.S.), Montefiore Medical Center, Bronx, NY; Department of Neurology (G.C.), University Milano-Bicocca, Monza, Italy; Department of Neurology (G.G.-G.), Hospital Universitario Infanta Sofía, San Sebastián de los Reyes, Spain; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, FLENI, Buenos Aires, Argentina; Department of Neurology (H.D.K.), University Health Network, University of Toronto, Ontario, Canada; Department of Neurology (E.D.), University Hospital of Larissa, Greece; Department of Neurology (S. Attarian), Reference Centre for NMD, CHU Timone ERN NMD, Marseille, France; Department of Neurology (A.J.v.d.K., F.E.), Amsterdam University Medical Centre, University of Amsterdam, Neuroscience Institute; Department of Neurology (J.P.A.S.), Maasstad Hospital, Rotterdam; Department of Neurology (H.J.G.), Reinier de Graaf Hospital, Reinier de Graafweg, Delft, the Netherlands; Department of Neurology (R.D.M.H.), King's College Hospital, Denmark Hill, London; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, United Kingdom; Department of Neurology (K.A.S.), University of Texas Health Science Centre at Houston; Department of Biology (N.K., S. Karafiath), Utah Valley University, Orem; Department of Neurology (M.V.), Lahey Hospital and Medical Center, Tufts University School of Medicine, Burlington, MA; Department of Neurology, Mental Health and Sensory Organs (NESMOS) (G.A.), Faculty of Medicine and Psychology, University of Rome 'Sapienza,' Sant' Andrea Hospital, Italy; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Alberta, Canada; Department of Neurology (C.F.), Maastricht University Medical Centre, the Netherlands; Department of Neurology (M.B.), Leeds Teaching Hospitals; Department of Neurology (R.C.R.), Addenbrooke's Hospital, Cambridge, United Kingdom; Department of Neurology (N.J.S.), University at Buffalo Jacobs School of Medicine and Biomedical Sciences, NY; Department of Neurology (R.F.), Scientific Institute San Raffaele, Milano, Italy; Department of Neurology (G.W.v.D.), Canisius Wilhelmina Hospital, Nijmegen; Department of Neurology (M.P.J.G.), Jeroen Bosch Hospital, 's-Hertogenbosch; Department of Neurology (J.V.), Leiden University Medical Centre; and Department of Immunology (B.C.J.), Erasmus MC, University Medical Centre Rotterdam, the Netherlands.; Vytopil M; From the Department of Neurology (H.A.-H., H.A., T.H.), Aarhus University Hospital, Denmark; Department of Neurology (A.Y.D., B.v.d.B., C.V., J.R., S.E.L., S. Arends, L.W.G.L., K.K., B.C.J.), Erasmus MC, University Medical Centre Rotterdam, the Netherlands; Department of Neurology (A.M.S.), University of Michigan School of Medicine, Ann Arbor; Department of Neurology (S.A.Z.), University of Pittsburgh Medical Center, PA; Department of Neurology (H.J.W., A.D.), College of Medical, Veterinary and Life Sciences, University of Glasgow, United Kingdom; Department of Neurology (D.R.C.), Johns Hopkins University School of Medicine, Baltimore, MD; Department of Neurology (K.C.G.), St. Elizabeth's Medical Centre, Tufts University, School of Medicine, Boston, MA; Laboratory of Gut-Brain Signaling (Z.I.); Laboratory Sciences and Services Division (LSSD) (Z.I.), icddr,b; National Institute of Neurosciences and Hospital (Q.D.M.), Dhaka, Bangladesh; Department of Neurology (S.H.S.), Odense University Hospital and University of Southern Denmark; Department of Neurology (S. Kusunoki), Kindai University Faculty of Medicine, Osaka-Sayama City, Japan; Department of Neurology (C.C.), Neuromuscular Unit, Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Division of Neurology (K.B.), Department of Medicine, Groote Schuur Hospital, University of Cape Town, South Africa; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, United Kingdom; Department of Neurology (B.v.d.B., H.K.), Franciscus Gasthuis & Vlietland (location: Vlietland Hospital), Schiedam; Department of Neurology (S. Arends, P.W.W.), Haga Hospital, Den Haag; Department of Neurology (L.W.G.L., L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (S. Kuwabara), Chiba University, Chuo-ku, Japan; Department of Neurology (P.V.d.B.), Neuromuscular Reference Centre, University Hospital Saint-Luc, University of Louvain, Brussels, Belgium; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Dysimmune Neuropathies Unit (G.A.M.), Department of Systems Medicine, Tor Vergata University Hospital, Rome, Italy; Department of Medicine (N.S.), University of Malaya, Kuala Lumpur, Malaysia; Department of Neurology (G.G.), University Hospital of Modena, Italy; Department of Clinical Neurophysiology (Y.P.), Reference Centre for NMD, CHU Nantes, Nantes, France; Department of Neurology (J.B.), Saarland University Medical School, Homburg (previous hospital), and MVZ Pfalzklinikum (J.B.), Kusel, Germany (current hospital); Department of Neurology (K.K., R.P.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (C.M.), Hospital Británico, Buenos Aires, Argentina; Department of Neurology (M.J.S.T.), Hospital Marques de Valdecilla, Santander; Department of Neurology (L.Q., L.M.-A.), Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, CIBERER and ERN-NMD, Spain; Department of Neurology (Y.W.), Affiliated Hospital of Jining Medical University, Shandong Province, China; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Research Hospital, Milan University, Italy; Nuffield Department of Clinical Neurosciences (S.R.), University of Oxford and Oxford University Hospitals NHS Foundation Trust, United Kingdom; Department of Neurosciences, Ophthalmology, Rehabilitation, Genetics and Maternal Sciences (A.S.), University of Genova, and IRCCS San Martino Hospital (A.S.), Genova, Italy; Department of Neurology (J.P.), Hospital Clínico de Santiago, Travesia Choupana, Santiago de Compostela (A Coruña), Spain; Department of Neurology (F.H.V.), Franciscus Gasthuis & Vlietland (location: Franciscus Gasthuis), Rotterdam, the Netherlands; Department of Neurology (W.W., N.K.), University of Vermont Medical Centre, Burlington; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (V.G., B.S.), Montefiore Medical Center, Bronx, NY; Department of Neurology (G.C.), University Milano-Bicocca, Monza, Italy; Department of Neurology (G.G.-G.), Hospital Universitario Infanta Sofía, San Sebastián de los Reyes, Spain; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, FLENI, Buenos Aires, Argentina; Department of Neurology (H.D.K.), University Health Network, University of Toronto, Ontario, Canada; Department of Neurology (E.D.), University Hospital of Larissa, Greece; Department of Neurology (S. Attarian), Reference Centre for NMD, CHU Timone ERN NMD, Marseille, France; Department of Neurology (A.J.v.d.K., F.E.), Amsterdam University Medical Centre, University of Amsterdam, Neuroscience Institute; Department of Neurology (J.P.A.S.), Maasstad Hospital, Rotterdam; Department of Neurology (H.J.G.), Reinier de Graaf Hospital, Reinier de Graafweg, Delft, the Netherlands; Department of Neurology (R.D.M.H.), King's College Hospital, Denmark Hill, London; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, United Kingdom; Department of Neurology (K.A.S.), University of Texas Health Science Centre at Houston; Department of Biology (N.K., S. Karafiath), Utah Valley University, Orem; Department of Neurology (M.V.), Lahey Hospital and Medical Center, Tufts University School of Medicine, Burlington, MA; Department of Neurology, Mental Health and Sensory Organs (NESMOS) (G.A.), Faculty of Medicine and Psychology, University of Rome 'Sapienza,' Sant' Andrea Hospital, Italy; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Alberta, Canada; Department of Neurology (C.F.), Maastricht University Medical Centre, the Netherlands; Department of Neurology (M.B.), Leeds Teaching Hospitals; Department of Neurology (R.C.R.), Addenbrooke's Hospital, Cambridge, United Kingdom; Department of Neurology (N.J.S.), University at Buffalo Jacobs School of Medicine and Biomedical Sciences, NY; Department of Neurology (R.F.), Scientific Institute San Raffaele, Milano, Italy; Department of Neurology (G.W.v.D.), Canisius Wilhelmina Hospital, Nijmegen; Department of Neurology (M.P.J.G.), Jeroen Bosch Hospital, 's-Hertogenbosch; Department of Neurology (J.V.), Leiden University Medical Centre; and Department of Immunology (B.C.J.), Erasmus MC, University Medical Centre Rotterdam, the Netherlands.; Antonini G; From the Department of Neurology (H.A.-H., H.A., T.H.), Aarhus University Hospital, Denmark; Department of Neurology (A.Y.D., B.v.d.B., C.V., J.R., S.E.L., S. Arends, L.W.G.L., K.K., B.C.J.), Erasmus MC, University Medical Centre Rotterdam, the Netherlands; Department of Neurology (A.M.S.), University of Michigan School of Medicine, Ann Arbor; Department of Neurology (S.A.Z.), University of Pittsburgh Medical Center, PA; Department of Neurology (H.J.W., A.D.), College of Medical, Veterinary and Life Sciences, University of Glasgow, United Kingdom; Department of Neurology (D.R.C.), Johns Hopkins University School of Medicine, Baltimore, MD; Department of Neurology (K.C.G.), St. Elizabeth's Medical Centre, Tufts University, School of Medicine, Boston, MA; Laboratory of Gut-Brain Signaling (Z.I.); Laboratory Sciences and Services Division (LSSD) (Z.I.), icddr,b; National Institute of Neurosciences and Hospital (Q.D.M.), Dhaka, Bangladesh; Department of Neurology (S.H.S.), Odense University Hospital and University of Southern Denmark; Department of Neurology (S. Kusunoki), Kindai University Faculty of Medicine, Osaka-Sayama City, Japan; Department of Neurology (C.C.), Neuromuscular Unit, Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Division of Neurology (K.B.), Department of Medicine, Groote Schuur Hospital, University of Cape Town, South Africa; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, United Kingdom; Department of Neurology (B.v.d.B., H.K.), Franciscus Gasthuis & Vlietland (location: Vlietland Hospital), Schiedam; Department of Neurology (S. Arends, P.W.W.), Haga Hospital, Den Haag; Department of Neurology (L.W.G.L., L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (S. Kuwabara), Chiba University, Chuo-ku, Japan; Department of Neurology (P.V.d.B.), Neuromuscular Reference Centre, University Hospital Saint-Luc, University of Louvain, Brussels, Belgium; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Dysimmune Neuropathies Unit (G.A.M.), Department of Systems Medicine, Tor Vergata University Hospital, Rome, Italy; Department of Medicine (N.S.), University of Malaya, Kuala Lumpur, Malaysia; Department of Neurology (G.G.), University Hospital of Modena, Italy; Department of Clinical Neurophysiology (Y.P.), Reference Centre for NMD, CHU Nantes, Nantes, France; Department of Neurology (J.B.), Saarland University Medical School, Homburg (previous hospital), and MVZ Pfalzklinikum (J.B.), Kusel, Germany (current hospital); Department of Neurology (K.K., R.P.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (C.M.), Hospital Británico, Buenos Aires, Argentina; Department of Neurology (M.J.S.T.), Hospital Marques de Valdecilla, Santander; Department of Neurology (L.Q., L.M.-A.), Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, CIBERER and ERN-NMD, Spain; Department of Neurology (Y.W.), Affiliated Hospital of Jining Medical University, Shandong Province, China; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Research Hospital, Milan University, Italy; Nuffield Department of Clinical Neurosciences (S.R.), University of Oxford and Oxford University Hospitals NHS Foundation Trust, United Kingdom; Department of Neurosciences, Ophthalmology, Rehabilitation, Genetics and Maternal Sciences (A.S.), University of Genova, and IRCCS San Martino Hospital (A.S.), Genova, Italy; Department of Neurology (J.P.), Hospital Clínico de Santiago, Travesia Choupana, Santiago de Compostela (A Coruña), Spain; Department of Neurology (F.H.V.), Franciscus Gasthuis & Vlietland (location: Franciscus Gasthuis), Rotterdam, the Netherlands; Department of Neurology (W.W., N.K.), University of Vermont Medical Centre, Burlington; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (V.G., B.S.), Montefiore Medical Center, Bronx, NY; Department of Neurology (G.C.), University Milano-Bicocca, Monza, Italy; Department of Neurology (G.G.-G.), Hospital Universitario Infanta Sofía, San Sebastián de los Reyes, Spain; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, FLENI, Buenos Aires, Argentina; Department of Neurology (H.D.K.), University Health Network, University of Toronto, Ontario, Canada; Department of Neurology (E.D.), University Hospital of Larissa, Greece; Department of Neurology (S. Attarian), Reference Centre for NMD, CHU Timone ERN NMD, Marseille, France; Department of Neurology (A.J.v.d.K., F.E.), Amsterdam University Medical Centre, University of Amsterdam, Neuroscience Institute; Department of Neurology (J.P.A.S.), Maasstad Hospital, Rotterdam; Department of Neurology (H.J.G.), Reinier de Graaf Hospital, Reinier de Graafweg, Delft, the Netherlands; Department of Neurology (R.D.M.H.), King's College Hospital, Denmark Hill, London; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, United Kingdom; Department of Neurology (K.A.S.), University of Texas Health Science Centre at Houston; Department of Biology (N.K., S. Karafiath), Utah Valley University, Orem; Department of Neurology (M.V.), Lahey Hospital and Medical Center, Tufts University School of Medicine, Burlington, MA; Department of Neurology, Mental Health and Sensory Organs (NESMOS) (G.A.), Faculty of Medicine and Psychology, University of Rome 'Sapienza,' Sant' Andrea Hospital, Italy; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Alberta, Canada; Department of Neurology (C.F.), Maastricht University Medical Centre, the Netherlands; Department of Neurology (M.B.), Leeds Teaching Hospitals; Department of Neurology (R.C.R.), Addenbrooke's Hospital, Cambridge, United Kingdom; Department of Neurology (N.J.S.), University at Buffalo Jacobs School of Medicine and Biomedical Sciences, NY; Department of Neurology (R.F.), Scientific Institute San Raffaele, Milano, Italy; Department of Neurology (G.W.v.D.), Canisius Wilhelmina Hospital, Nijmegen; Department of Neurology (M.P.J.G.), Jeroen Bosch Hospital, 's-Hertogenbosch; Department of Neurology (J.V.), Leiden University Medical Centre; and Department of Immunology (B.C.J.), Erasmus MC, University Medical Centre Rotterdam, the Netherlands.; Feasby TE; From the Department of Neurology (H.A.-H., H.A., T.H.), Aarhus University Hospital, Denmark; Department of Neurology (A.Y.D., B.v.d.B., C.V., J.R., S.E.L., S. Arends, L.W.G.L., K.K., B.C.J.), Erasmus MC, University Medical Centre Rotterdam, the Netherlands; Department of Neurology (A.M.S.), University of Michigan School of Medicine, Ann Arbor; Department of Neurology (S.A.Z.), University of Pittsburgh Medical Center, PA; Department of Neurology (H.J.W., A.D.), College of Medical, Veterinary and Life Sciences, University of Glasgow, United Kingdom; Department of Neurology (D.R.C.), Johns Hopkins University School of Medicine, Baltimore, MD; Department of Neurology (K.C.G.), St. Elizabeth's Medical Centre, Tufts University, School of Medicine, Boston, MA; Laboratory of Gut-Brain Signaling (Z.I.); Laboratory Sciences and Services Division (LSSD) (Z.I.), icddr,b; National Institute of Neurosciences and Hospital (Q.D.M.), Dhaka, Bangladesh; Department of Neurology (S.H.S.), Odense University Hospital and University of Southern Denmark; Department of Neurology (S. Kusunoki), Kindai University Faculty of Medicine, Osaka-Sayama City, Japan; Department of Neurology (C.C.), Neuromuscular Unit, Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Division of Neurology (K.B.), Department of Medicine, Groote Schuur Hospital, University of Cape Town, South Africa; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, United Kingdom; Department of Neurology (B.v.d.B., H.K.), Franciscus Gasthuis & Vlietland (location: Vlietland Hospital), Schiedam; Department of Neurology (S. Arends, P.W.W.), Haga Hospital, Den Haag; Department of Neurology (L.W.G.L., L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (S. Kuwabara), Chiba University, Chuo-ku, Japan; Department of Neurology (P.V.d.B.), Neuromuscular Reference Centre, University Hospital Saint-Luc, University of Louvain, Brussels, Belgium; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Dysimmune Neuropathies Unit (G.A.M.), Department of Systems Medicine, Tor Vergata University Hospital, Rome, Italy; Department of Medicine (N.S.), University of Malaya, Kuala Lumpur, Malaysia; Department of Neurology (G.G.), University Hospital of Modena, Italy; Department of Clinical Neurophysiology (Y.P.), Reference Centre for NMD, CHU Nantes, Nantes, France; Department of Neurology (J.B.), Saarland University Medical School, Homburg (previous hospital), and MVZ Pfalzklinikum (J.B.), Kusel, Germany (current hospital); Department of Neurology (K.K., R.P.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (C.M.), Hospital Británico, Buenos Aires, Argentina; Department of Neurology (M.J.S.T.), Hospital Marques de Valdecilla, Santander; Department of Neurology (L.Q., L.M.-A.), Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, CIBERER and ERN-NMD, Spain; Department of Neurology (Y.W.), Affiliated Hospital of Jining Medical University, Shandong Province, China; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Research Hospital, Milan University, Italy; Nuffield Department of Clinical Neurosciences (S.R.), University of Oxford and Oxford University Hospitals NHS Foundation Trust, United Kingdom; Department of Neurosciences, Ophthalmology, Rehabilitation, Genetics and Maternal Sciences (A.S.), University of Genova, and IRCCS San Martino Hospital (A.S.), Genova, Italy; Department of Neurology (J.P.), Hospital Clínico de Santiago, Travesia Choupana, Santiago de Compostela (A Coruña), Spain; Department of Neurology (F.H.V.), Franciscus Gasthuis & Vlietland (location: Franciscus Gasthuis), Rotterdam, the Netherlands; Department of Neurology (W.W., N.K.), University of Vermont Medical Centre, Burlington; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (V.G., B.S.), Montefiore Medical Center, Bronx, NY; Department of Neurology (G.C.), University Milano-Bicocca, Monza, Italy; Department of Neurology (G.G.-G.), Hospital Universitario Infanta Sofía, San Sebastián de los Reyes, Spain; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, FLENI, Buenos Aires, Argentina; Department of Neurology (H.D.K.), University Health Network, University of Toronto, Ontario, Canada; Department of Neurology (E.D.), University Hospital of Larissa, Greece; Department of Neurology (S. Attarian), Reference Centre for NMD, CHU Timone ERN NMD, Marseille, France; Department of Neurology (A.J.v.d.K., F.E.), Amsterdam University Medical Centre, University of Amsterdam, Neuroscience Institute; Department of Neurology (J.P.A.S.), Maasstad Hospital, Rotterdam; Department of Neurology (H.J.G.), Reinier de Graaf Hospital, Reinier de Graafweg, Delft, the Netherlands; Department of Neurology (R.D.M.H.), King's College Hospital, Denmark Hill, London; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, United Kingdom; Department of Neurology (K.A.S.), University of Texas Health Science Centre at Houston; Department of Biology (N.K., S. Karafiath), Utah Valley University, Orem; Department of Neurology (M.V.), Lahey Hospital and Medical Center, Tufts University School of Medicine, Burlington, MA; Department of Neurology, Mental Health and Sensory Organs (NESMOS) (G.A.), Faculty of Medicine and Psychology, University of Rome 'Sapienza,' Sant' Andrea Hospital, Italy; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Alberta, Canada; Department of Neurology (C.F.), Maastricht University Medical Centre, the Netherlands; Department of Neurology (M.B.), Leeds Teaching Hospitals; Department of Neurology (R.C.R.), Addenbrooke's Hospital, Cambridge, United Kingdom; Department of Neurology (N.J.S.), University at Buffalo Jacobs School of Medicine and Biomedical Sciences, NY; Department of Neurology (R.F.), Scientific Institute San Raffaele, Milano, Italy; Department of Neurology (G.W.v.D.), Canisius Wilhelmina Hospital, Nijmegen; Department of Neurology (M.P.J.G.), Jeroen Bosch Hospital, 's-Hertogenbosch; Department of Neurology (J.V.), Leiden University Medical Centre; and Department of Immunology (B.C.J.), Erasmus MC, University Medical Centre Rotterdam, the Netherlands.; Faber C; From the Department of Neurology (H.A.-H., H.A., T.H.), Aarhus University Hospital, Denmark; Department of Neurology (A.Y.D., B.v.d.B., C.V., J.R., S.E.L., S. Arends, L.W.G.L., K.K., B.C.J.), Erasmus MC, University Medical Centre Rotterdam, the Netherlands; Department of Neurology (A.M.S.), University of Michigan School of Medicine, Ann Arbor; Department of Neurology (S.A.Z.), University of Pittsburgh Medical Center, PA; Department of Neurology (H.J.W., A.D.), College of Medical, Veterinary and Life Sciences, University of Glasgow, United Kingdom; Department of Neurology (D.R.C.), Johns Hopkins University School of Medicine, Baltimore, MD; Department of Neurology (K.C.G.), St. Elizabeth's Medical Centre, Tufts University, School of Medicine, Boston, MA; Laboratory of Gut-Brain Signaling (Z.I.); Laboratory Sciences and Services Division (LSSD) (Z.I.), icddr,b; National Institute of Neurosciences and Hospital (Q.D.M.), Dhaka, Bangladesh; Department of Neurology (S.H.S.), Odense University Hospital and University of Southern Denmark; Department of Neurology (S. Kusunoki), Kindai University Faculty of Medicine, Osaka-Sayama City, Japan; Department of Neurology (C.C.), Neuromuscular Unit, Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Division of Neurology (K.B.), Department of Medicine, Groote Schuur Hospital, University of Cape Town, South Africa; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, United Kingdom; Department of Neurology (B.v.d.B., H.K.), Franciscus Gasthuis & Vlietland (location: Vlietland Hospital), Schiedam; Department of Neurology (S. Arends, P.W.W.), Haga Hospital, Den Haag; Department of Neurology (L.W.G.L., L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (S. Kuwabara), Chiba University, Chuo-ku, Japan; Department of Neurology (P.V.d.B.), Neuromuscular Reference Centre, University Hospital Saint-Luc, University of Louvain, Brussels, Belgium; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Dysimmune Neuropathies Unit (G.A.M.), Department of Systems Medicine, Tor Vergata University Hospital, Rome, Italy; Department of Medicine (N.S.), University of Malaya, Kuala Lumpur, Malaysia; Department of Neurology (G.G.), University Hospital of Modena, Italy; Department of Clinical Neurophysiology (Y.P.), Reference Centre for NMD, CHU Nantes, Nantes, France; Department of Neurology (J.B.), Saarland University Medical School, Homburg (previous hospital), and MVZ Pfalzklinikum (J.B.), Kusel, Germany (current hospital); Department of Neurology (K.K., R.P.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (C.M.), Hospital Británico, Buenos Aires, Argentina; Department of Neurology (M.J.S.T.), Hospital Marques de Valdecilla, Santander; Department of Neurology (L.Q., L.M.-A.), Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, CIBERER and ERN-NMD, Spain; Department of Neurology (Y.W.), Affiliated Hospital of Jining Medical University, Shandong Province, China; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Research Hospital, Milan University, Italy; Nuffield Department of Clinical Neurosciences (S.R.), University of Oxford and Oxford University Hospitals NHS Foundation Trust, United Kingdom; Department of Neurosciences, Ophthalmology, Rehabilitation, Genetics and Maternal Sciences (A.S.), University of Genova, and IRCCS San Martino Hospital (A.S.), Genova, Italy; Department of Neurology (J.P.), Hospital Clínico de Santiago, Travesia Choupana, Santiago de Compostela (A Coruña), Spain; Department of Neurology (F.H.V.), Franciscus Gasthuis & Vlietland (location: Franciscus Gasthuis), Rotterdam, the Netherlands; Department of Neurology (W.W., N.K.), University of Vermont Medical Centre, Burlington; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (V.G., B.S.), Montefiore Medical Center, Bronx, NY; Department of Neurology (G.C.), University Milano-Bicocca, Monza, Italy; Department of Neurology (G.G.-G.), Hospital Universitario Infanta Sofía, San Sebastián de los Reyes, Spain; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, FLENI, Buenos Aires, Argentina; Department of Neurology (H.D.K.), University Health Network, University of Toronto, Ontario, Canada; Department of Neurology (E.D.), University Hospital of Larissa, Greece; Department of Neurology (S. Attarian), Reference Centre for NMD, CHU Timone ERN NMD, Marseille, France; Department of Neurology (A.J.v.d.K., F.E.), Amsterdam University Medical Centre, University of Amsterdam, Neuroscience Institute; Department of Neurology (J.P.A.S.), Maasstad Hospital, Rotterdam; Department of Neurology (H.J.G.), Reinier de Graaf Hospital, Reinier de Graafweg, Delft, the Netherlands; Department of Neurology (R.D.M.H.), King's College Hospital, Denmark Hill, London; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, United Kingdom; Department of Neurology (K.A.S.), University of Texas Health Science Centre at Houston; Department of Biology (N.K., S. Karafiath), Utah Valley University, Orem; Department of Neurology (M.V.), Lahey Hospital and Medical Center, Tufts University School of Medicine, Burlington, MA; Department of Neurology, Mental Health and Sensory Organs (NESMOS) (G.A.), Faculty of Medicine and Psychology, University of Rome 'Sapienza,' Sant' Andrea Hospital, Italy; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Alberta, Canada; Department of Neurology (C.F.), Maastricht University Medical Centre, the Netherlands; Department of Neurology (M.B.), Leeds Teaching Hospitals; Department of Neurology (R.C.R.), Addenbrooke's Hospital, Cambridge, United Kingdom; Department of Neurology (N.J.S.), University at Buffalo Jacobs School of Medicine and Biomedical Sciences, NY; Department of Neurology (R.F.), Scientific Institute San Raffaele, Milano, Italy; Department of Neurology (G.W.v.D.), Canisius Wilhelmina Hospital, Nijmegen; Department of Neurology (M.P.J.G.), Jeroen Bosch Hospital, 's-Hertogenbosch; Department of Neurology (J.V.), Leiden University Medical Centre; and Department of Immunology (B.C.J.), Erasmus MC, University Medical Centre Rotterdam, the Netherlands.; Kramers H; From the Department of Neurology (H.A.-H., H.A., T.H.), Aarhus University Hospital, Denmark; Department of Neurology (A.Y.D., B.v.d.B., C.V., J.R., S.E.L., S. Arends, L.W.G.L., K.K., B.C.J.), Erasmus MC, University Medical Centre Rotterdam, the Netherlands; Department of Neurology (A.M.S.), University of Michigan School of Medicine, Ann Arbor; Department of Neurology (S.A.Z.), University of Pittsburgh Medical Center, PA; Department of Neurology (H.J.W., A.D.), College of Medical, Veterinary and Life Sciences, University of Glasgow, United Kingdom; Department of Neurology (D.R.C.), Johns Hopkins University School of Medicine, Baltimore, MD; Department of Neurology (K.C.G.), St. Elizabeth's Medical Centre, Tufts University, School of Medicine, Boston, MA; Laboratory of Gut-Brain Signaling (Z.I.); Laboratory Sciences and Services Division (LSSD) (Z.I.), icddr,b; National Institute of Neurosciences and Hospital (Q.D.M.), Dhaka, Bangladesh; Department of Neurology (S.H.S.), Odense University Hospital and University of Southern Denmark; Department of Neurology (S. Kusunoki), Kindai University Faculty of Medicine, Osaka-Sayama City, Japan; Department of Neurology (C.C.), Neuromuscular Unit, Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Division of Neurology (K.B.), Department of Medicine, Groote Schuur Hospital, University of Cape Town, South Africa; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, United Kingdom; Department of Neurology (B.v.d.B., H.K.), Franciscus Gasthuis & Vlietland (location: Vlietland Hospital), Schiedam; Department of Neurology (S. Arends, P.W.W.), Haga Hospital, Den Haag; Department of Neurology (L.W.G.L., L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (S. Kuwabara), Chiba University, Chuo-ku, Japan; Department of Neurology (P.V.d.B.), Neuromuscular Reference Centre, University Hospital Saint-Luc, University of Louvain, Brussels, Belgium; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Dysimmune Neuropathies Unit (G.A.M.), Department of Systems Medicine, Tor Vergata University Hospital, Rome, Italy; Department of Medicine (N.S.), University of Malaya, Kuala Lumpur, Malaysia; Department of Neurology (G.G.), University Hospital of Modena, Italy; Department of Clinical Neurophysiology (Y.P.), Reference Centre for NMD, CHU Nantes, Nantes, France; Department of Neurology (J.B.), Saarland University Medical School, Homburg (previous hospital), and MVZ Pfalzklinikum (J.B.), Kusel, Germany (current hospital); Department of Neurology (K.K., R.P.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (C.M.), Hospital Británico, Buenos Aires, Argentina; Department of Neurology (M.J.S.T.), Hospital Marques de Valdecilla, Santander; Department of Neurology (L.Q., L.M.-A.), Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, CIBERER and ERN-NMD, Spain; Department of Neurology (Y.W.), Affiliated Hospital of Jining Medical University, Shandong Province, China; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Research Hospital, Milan University, Italy; Nuffield Department of Clinical Neurosciences (S.R.), University of Oxford and Oxford University Hospitals NHS Foundation Trust, United Kingdom; Department of Neurosciences, Ophthalmology, Rehabilitation, Genetics and Maternal Sciences (A.S.), University of Genova, and IRCCS San Martino Hospital (A.S.), Genova, Italy; Department of Neurology (J.P.), Hospital Clínico de Santiago, Travesia Choupana, Santiago de Compostela (A Coruña), Spain; Department of Neurology (F.H.V.), Franciscus Gasthuis & Vlietland (location: Franciscus Gasthuis), Rotterdam, the Netherlands; Department of Neurology (W.W., N.K.), University of Vermont Medical Centre, Burlington; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (V.G., B.S.), Montefiore Medical Center, Bronx, NY; Department of Neurology (G.C.), University Milano-Bicocca, Monza, Italy; Department of Neurology (G.G.-G.), Hospital Universitario Infanta Sofía, San Sebastián de los Reyes, Spain; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, FLENI, Buenos Aires, Argentina; Department of Neurology (H.D.K.), University Health Network, University of Toronto, Ontario, Canada; Department of Neurology (E.D.), University Hospital of Larissa, Greece; Department of Neurology (S. Attarian), Reference Centre for NMD, CHU Timone ERN NMD, Marseille, France; Department of Neurology (A.J.v.d.K., F.E.), Amsterdam University Medical Centre, University of Amsterdam, Neuroscience Institute; Department of Neurology (J.P.A.S.), Maasstad Hospital, Rotterdam; Department of Neurology (H.J.G.), Reinier de Graaf Hospital, Reinier de Graafweg, Delft, the Netherlands; Department of Neurology (R.D.M.H.), King's College Hospital, Denmark Hill, London; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, United Kingdom; Department of Neurology (K.A.S.), University of Texas Health Science Centre at Houston; Department of Biology (N.K., S. Karafiath), Utah Valley University, Orem; Department of Neurology (M.V.), Lahey Hospital and Medical Center, Tufts University School of Medicine, Burlington, MA; Department of Neurology, Mental Health and Sensory Organs (NESMOS) (G.A.), Faculty of Medicine and Psychology, University of Rome 'Sapienza,' Sant' Andrea Hospital, Italy; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Alberta, Canada; Department of Neurology (C.F.), Maastricht University Medical Centre, the Netherlands; Department of Neurology (M.B.), Leeds Teaching Hospitals; Department of Neurology (R.C.R.), Addenbrooke's Hospital, Cambridge, United Kingdom; Department of Neurology (N.J.S.), University at Buffalo Jacobs School of Medicine and Biomedical Sciences, NY; Department of Neurology (R.F.), Scientific Institute San Raffaele, Milano, Italy; Department of Neurology (G.W.v.D.), Canisius Wilhelmina Hospital, Nijmegen; Department of Neurology (M.P.J.G.), Jeroen Bosch Hospital, 's-Hertogenbosch; Department of Neurology (J.V.), Leiden University Medical Centre; and Department of Immunology (B.C.J.), Erasmus MC, University Medical Centre Rotterdam, the Netherlands.; Busby M; From the Department of Neurology (H.A.-H., H.A., T.H.), Aarhus University Hospital, Denmark; Department of Neurology (A.Y.D., B.v.d.B., C.V., J.R., S.E.L., S. Arends, L.W.G.L., K.K., B.C.J.), Erasmus MC, University Medical Centre Rotterdam, the Netherlands; Department of Neurology (A.M.S.), University of Michigan School of Medicine, Ann Arbor; Department of Neurology (S.A.Z.), University of Pittsburgh Medical Center, PA; Department of Neurology (H.J.W., A.D.), College of Medical, Veterinary and Life Sciences, University of Glasgow, United Kingdom; Department of Neurology (D.R.C.), Johns Hopkins University School of Medicine, Baltimore, MD; Department of Neurology (K.C.G.), St. Elizabeth's Medical Centre, Tufts University, School of Medicine, Boston, MA; Laboratory of Gut-Brain Signaling (Z.I.); Laboratory Sciences and Services Division (LSSD) (Z.I.), icddr,b; National Institute of Neurosciences and Hospital (Q.D.M.), Dhaka, Bangladesh; Department of Neurology (S.H.S.), Odense University Hospital and University of Southern Denmark; Department of Neurology (S. Kusunoki), Kindai University Faculty of Medicine, Osaka-Sayama City, Japan; Department of Neurology (C.C.), Neuromuscular Unit, Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Division of Neurology (K.B.), Department of Medicine, Groote Schuur Hospital, University of Cape Town, South Africa; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, United Kingdom; Department of Neurology (B.v.d.B., H.K.), Franciscus Gasthuis & Vlietland (location: Vlietland Hospital), Schiedam; Department of Neurology (S. Arends, P.W.W.), Haga Hospital, Den Haag; Department of Neurology (L.W.G.L., L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (S. Kuwabara), Chiba University, Chuo-ku, Japan; Department of Neurology (P.V.d.B.), Neuromuscular Reference Centre, University Hospital Saint-Luc, University of Louvain, Brussels, Belgium; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Dysimmune Neuropathies Unit (G.A.M.), Department of Systems Medicine, Tor Vergata University Hospital, Rome, Italy; Department of Medicine (N.S.), University of Malaya, Kuala Lumpur, Malaysia; Department of Neurology (G.G.), University Hospital of Modena, Italy; Department of Clinical Neurophysiology (Y.P.), Reference Centre for NMD, CHU Nantes, Nantes, France; Department of Neurology (J.B.), Saarland University Medical School, Homburg (previous hospital), and MVZ Pfalzklinikum (J.B.), Kusel, Germany (current hospital); Department of Neurology (K.K., R.P.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (C.M.), Hospital Británico, Buenos Aires, Argentina; Department of Neurology (M.J.S.T.), Hospital Marques de Valdecilla, Santander; Department of Neurology (L.Q., L.M.-A.), Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, CIBERER and ERN-NMD, Spain; Department of Neurology (Y.W.), Affiliated Hospital of Jining Medical University, Shandong Province, China; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Research Hospital, Milan University, Italy; Nuffield Department of Clinical Neurosciences (S.R.), University of Oxford and Oxford University Hospitals NHS Foundation Trust, United Kingdom; Department of Neurosciences, Ophthalmology, Rehabilitation, Genetics and Maternal Sciences (A.S.), University of Genova, and IRCCS San Martino Hospital (A.S.), Genova, Italy; Department of Neurology (J.P.), Hospital Clínico de Santiago, Travesia Choupana, Santiago de Compostela (A Coruña), Spain; Department of Neurology (F.H.V.), Franciscus Gasthuis & Vlietland (location: Franciscus Gasthuis), Rotterdam, the Netherlands; Department of Neurology (W.W., N.K.), University of Vermont Medical Centre, Burlington; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (V.G., B.S.), Montefiore Medical Center, Bronx, NY; Department of Neurology (G.C.), University Milano-Bicocca, Monza, Italy; Department of Neurology (G.G.-G.), Hospital Universitario Infanta Sofía, San Sebastián de los Reyes, Spain; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, FLENI, Buenos Aires, Argentina; Department of Neurology (H.D.K.), University Health Network, University of Toronto, Ontario, Canada; Department of Neurology (E.D.), University Hospital of Larissa, Greece; Department of Neurology (S. Attarian), Reference Centre for NMD, CHU Timone ERN NMD, Marseille, France; Department of Neurology (A.J.v.d.K., F.E.), Amsterdam University Medical Centre, University of Amsterdam, Neuroscience Institute; Department of Neurology (J.P.A.S.), Maasstad Hospital, Rotterdam; Department of Neurology (H.J.G.), Reinier de Graaf Hospital, Reinier de Graafweg, Delft, the Netherlands; Department of Neurology (R.D.M.H.), King's College Hospital, Denmark Hill, London; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, United Kingdom; Department of Neurology (K.A.S.), University of Texas Health Science Centre at Houston; Department of Biology (N.K., S. Karafiath), Utah Valley University, Orem; Department of Neurology (M.V.), Lahey Hospital and Medical Center, Tufts University School of Medicine, Burlington, MA; Department of Neurology, Mental Health and Sensory Organs (NESMOS) (G.A.), Faculty of Medicine and Psychology, University of Rome 'Sapienza,' Sant' Andrea Hospital, Italy; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Alberta, Canada; Department of Neurology (C.F.), Maastricht University Medical Centre, the Netherlands; Department of Neurology (M.B.), Leeds Teaching Hospitals; Department of Neurology (R.C.R.), Addenbrooke's Hospital, Cambridge, United Kingdom; Department of Neurology (N.J.S.), University at Buffalo Jacobs School of Medicine and Biomedical Sciences, NY; Department of Neurology (R.F.), Scientific Institute San Raffaele, Milano, Italy; Department of Neurology (G.W.v.D.), Canisius Wilhelmina Hospital, Nijmegen; Department of Neurology (M.P.J.G.), Jeroen Bosch Hospital, 's-Hertogenbosch; Department of Neurology (J.V.), Leiden University Medical Centre; and Department of Immunology (B.C.J.), Erasmus MC, University Medical Centre Rotterdam, the Netherlands.; Roberts RC; From the Department of Neurology (H.A.-H., H.A., T.H.), Aarhus University Hospital, Denmark; Department of Neurology (A.Y.D., B.v.d.B., C.V., J.R., S.E.L., S. Arends, L.W.G.L., K.K., B.C.J.), Erasmus MC, University Medical Centre Rotterdam, the Netherlands; Department of Neurology (A.M.S.), University of Michigan School of Medicine, Ann Arbor; Department of Neurology (S.A.Z.), University of Pittsburgh Medical Center, PA; Department of Neurology (H.J.W., A.D.), College of Medical, Veterinary and Life Sciences, University of Glasgow, United Kingdom; Department of Neurology (D.R.C.), Johns Hopkins University School of Medicine, Baltimore, MD; Department of Neurology (K.C.G.), St. Elizabeth's Medical Centre, Tufts University, School of Medicine, Boston, MA; Laboratory of Gut-Brain Signaling (Z.I.); Laboratory Sciences and Services Division (LSSD) (Z.I.), icddr,b; National Institute of Neurosciences and Hospital (Q.D.M.), Dhaka, Bangladesh; Department of Neurology (S.H.S.), Odense University Hospital and University of Southern Denmark; Department of Neurology (S. Kusunoki), Kindai University Faculty of Medicine, Osaka-Sayama City, Japan; Department of Neurology (C.C.), Neuromuscular Unit, Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Division of Neurology (K.B.), Department of Medicine, Groote Schuur Hospital, University of Cape Town, South Africa; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, United Kingdom; Department of Neurology (B.v.d.B., H.K.), Franciscus Gasthuis & Vlietland (location: Vlietland Hospital), Schiedam; Department of Neurology (S. Arends, P.W.W.), Haga Hospital, Den Haag; Department of Neurology (L.W.G.L., L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (S. Kuwabara), Chiba University, Chuo-ku, Japan; Department of Neurology (P.V.d.B.), Neuromuscular Reference Centre, University Hospital Saint-Luc, University of Louvain, Brussels, Belgium; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Dysimmune Neuropathies Unit (G.A.M.), Department of Systems Medicine, Tor Vergata University Hospital, Rome, Italy; Department of Medicine (N.S.), University of Malaya, Kuala Lumpur, Malaysia; Department of Neurology (G.G.), University Hospital of Modena, Italy; Department of Clinical Neurophysiology (Y.P.), Reference Centre for NMD, CHU Nantes, Nantes, France; Department of Neurology (J.B.), Saarland University Medical School, Homburg (previous hospital), and MVZ Pfalzklinikum (J.B.), Kusel, Germany (current hospital); Department of Neurology (K.K., R.P.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (C.M.), Hospital Británico, Buenos Aires, Argentina; Department of Neurology (M.J.S.T.), Hospital Marques de Valdecilla, Santander; Department of Neurology (L.Q., L.M.-A.), Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, CIBERER and ERN-NMD, Spain; Department of Neurology (Y.W.), Affiliated Hospital of Jining Medical University, Shandong Province, China; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Research Hospital, Milan University, Italy; Nuffield Department of Clinical Neurosciences (S.R.), University of Oxford and Oxford University Hospitals NHS Foundation Trust, United Kingdom; Department of Neurosciences, Ophthalmology, Rehabilitation, Genetics and Maternal Sciences (A.S.), University of Genova, and IRCCS San Martino Hospital (A.S.), Genova, Italy; Department of Neurology (J.P.), Hospital Clínico de Santiago, Travesia Choupana, Santiago de Compostela (A Coruña), Spain; Department of Neurology (F.H.V.), Franciscus Gasthuis & Vlietland (location: Franciscus Gasthuis), Rotterdam, the Netherlands; Department of Neurology (W.W., N.K.), University of Vermont Medical Centre, Burlington; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (V.G., B.S.), Montefiore Medical Center, Bronx, NY; Department of Neurology (G.C.), University Milano-Bicocca, Monza, Italy; Department of Neurology (G.G.-G.), Hospital Universitario Infanta Sofía, San Sebastián de los Reyes, Spain; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, FLENI, Buenos Aires, Argentina; Department of Neurology (H.D.K.), University Health Network, University of Toronto, Ontario, Canada; Department of Neurology (E.D.), University Hospital of Larissa, Greece; Department of Neurology (S. Attarian), Reference Centre for NMD, CHU Timone ERN NMD, Marseille, France; Department of Neurology (A.J.v.d.K., F.E.), Amsterdam University Medical Centre, University of Amsterdam, Neuroscience Institute; Department of Neurology (J.P.A.S.), Maasstad Hospital, Rotterdam; Department of Neurology (H.J.G.), Reinier de Graaf Hospital, Reinier de Graafweg, Delft, the Netherlands; Department of Neurology (R.D.M.H.), King's College Hospital, Denmark Hill, London; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, United Kingdom; Department of Neurology (K.A.S.), University of Texas Health Science Centre at Houston; Department of Biology (N.K., S. Karafiath), Utah Valley University, Orem; Department of Neurology (M.V.), Lahey Hospital and Medical Center, Tufts University School of Medicine, Burlington, MA; Department of Neurology, Mental Health and Sensory Organs (NESMOS) (G.A.), Faculty of Medicine and Psychology, University of Rome 'Sapienza,' Sant' Andrea Hospital, Italy; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Alberta, Canada; Department of Neurology (C.F.), Maastricht University Medical Centre, the Netherlands; Department of Neurology (M.B.), Leeds Teaching Hospitals; Department of Neurology (R.C.R.), Addenbrooke's Hospital, Cambridge, United Kingdom; Department of Neurology (N.J.S.), University at Buffalo Jacobs School of Medicine and Biomedical Sciences, NY; Department of Neurology (R.F.), Scientific Institute San Raffaele, Milano, Italy; Department of Neurology (G.W.v.D.), Canisius Wilhelmina Hospital, Nijmegen; Department of Neurology (M.P.J.G.), Jeroen Bosch Hospital, 's-Hertogenbosch; Department of Neurology (J.V.), Leiden University Medical Centre; and Department of Immunology (B.C.J.), Erasmus MC, University Medical Centre Rotterdam, the Netherlands.; Silvestri NJ; From the Department of Neurology (H.A.-H., H.A., T.H.), Aarhus University Hospital, Denmark; Department of Neurology (A.Y.D., B.v.d.B., C.V., J.R., S.E.L., S. Arends, L.W.G.L., K.K., B.C.J.), Erasmus MC, University Medical Centre Rotterdam, the Netherlands; Department of Neurology (A.M.S.), University of Michigan School of Medicine, Ann Arbor; Department of Neurology (S.A.Z.), University of Pittsburgh Medical Center, PA; Department of Neurology (H.J.W., A.D.), College of Medical, Veterinary and Life Sciences, University of Glasgow, United Kingdom; Department of Neurology (D.R.C.), Johns Hopkins University School of Medicine, Baltimore, MD; Department of Neurology (K.C.G.), St. Elizabeth's Medical Centre, Tufts University, School of Medicine, Boston, MA; Laboratory of Gut-Brain Signaling (Z.I.); Laboratory Sciences and Services Division (LSSD) (Z.I.), icddr,b; National Institute of Neurosciences and Hospital (Q.D.M.), Dhaka, Bangladesh; Department of Neurology (S.H.S.), Odense University Hospital and University of Southern Denmark; Department of Neurology (S. Kusunoki), Kindai University Faculty of Medicine, Osaka-Sayama City, Japan; Department of Neurology (C.C.), Neuromuscular Unit, Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Division of Neurology (K.B.), Department of Medicine, Groote Schuur Hospital, University of Cape Town, South Africa; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, United Kingdom; Department of Neurology (B.v.d.B., H.K.), Franciscus Gasthuis & Vlietland (location: Vlietland Hospital), Schiedam; Department of Neurology (S. Arends, P.W.W.), Haga Hospital, Den Haag; Department of Neurology (L.W.G.L., L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (S. Kuwabara), Chiba University, Chuo-ku, Japan; Department of Neurology (P.V.d.B.), Neuromuscular Reference Centre, University Hospital Saint-Luc, University of Louvain, Brussels, Belgium; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Dysimmune Neuropathies Unit (G.A.M.), Department of Systems Medicine, Tor Vergata University Hospital, Rome, Italy; Department of Medicine (N.S.), University of Malaya, Kuala Lumpur, Malaysia; Department of Neurology (G.G.), University Hospital of Modena, Italy; Department of Clinical Neurophysiology (Y.P.), Reference Centre for NMD, CHU Nantes, Nantes, France; Department of Neurology (J.B.), Saarland University Medical School, Homburg (previous hospital), and MVZ Pfalzklinikum (J.B.), Kusel, Germany (current hospital); Department of Neurology (K.K., R.P.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (C.M.), Hospital Británico, Buenos Aires, Argentina; Department of Neurology (M.J.S.T.), Hospital Marques de Valdecilla, Santander; Department of Neurology (L.Q., L.M.-A.), Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, CIBERER and ERN-NMD, Spain; Department of Neurology (Y.W.), Affiliated Hospital of Jining Medical University, Shandong Province, China; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Research Hospital, Milan University, Italy; Nuffield Department of Clinical Neurosciences (S.R.), University of Oxford and Oxford University Hospitals NHS Foundation Trust, United Kingdom; Department of Neurosciences, Ophthalmology, Rehabilitation, Genetics and Maternal Sciences (A.S.), University of Genova, and IRCCS San Martino Hospital (A.S.), Genova, Italy; Department of Neurology (J.P.), Hospital Clínico de Santiago, Travesia Choupana, Santiago de Compostela (A Coruña), Spain; Department of Neurology (F.H.V.), Franciscus Gasthuis & Vlietland (location: Franciscus Gasthuis), Rotterdam, the Netherlands; Department of Neurology (W.W., N.K.), University of Vermont Medical Centre, Burlington; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (V.G., B.S.), Montefiore Medical Center, Bronx, NY; Department of Neurology (G.C.), University Milano-Bicocca, Monza, Italy; Department of Neurology (G.G.-G.), Hospital Universitario Infanta Sofía, San Sebastián de los Reyes, Spain; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, FLENI, Buenos Aires, Argentina; Department of Neurology (H.D.K.), University Health Network, University of Toronto, Ontario, Canada; Department of Neurology (E.D.), University Hospital of Larissa, Greece; Department of Neurology (S. Attarian), Reference Centre for NMD, CHU Timone ERN NMD, Marseille, France; Department of Neurology (A.J.v.d.K., F.E.), Amsterdam University Medical Centre, University of Amsterdam, Neuroscience Institute; Department of Neurology (J.P.A.S.), Maasstad Hospital, Rotterdam; Department of Neurology (H.J.G.), Reinier de Graaf Hospital, Reinier de Graafweg, Delft, the Netherlands; Department of Neurology (R.D.M.H.), King's College Hospital, Denmark Hill, London; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, United Kingdom; Department of Neurology (K.A.S.), University of Texas Health Science Centre at Houston; Department of Biology (N.K., S. Karafiath), Utah Valley University, Orem; Department of Neurology (M.V.), Lahey Hospital and Medical Center, Tufts University School of Medicine, Burlington, MA; Department of Neurology, Mental Health and Sensory Organs (NESMOS) (G.A.), Faculty of Medicine and Psychology, University of Rome 'Sapienza,' Sant' Andrea Hospital, Italy; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Alberta, Canada; Department of Neurology (C.F.), Maastricht University Medical Centre, the Netherlands; Department of Neurology (M.B.), Leeds Teaching Hospitals; Department of Neurology (R.C.R.), Addenbrooke's Hospital, Cambridge, United Kingdom; Department of Neurology (N.J.S.), University at Buffalo Jacobs School of Medicine and Biomedical Sciences, NY; Department of Neurology (R.F.), Scientific Institute San Raffaele, Milano, Italy; Department of Neurology (G.W.v.D.), Canisius Wilhelmina Hospital, Nijmegen; Department of Neurology (M.P.J.G.), Jeroen Bosch Hospital, 's-Hertogenbosch; Department of Neurology (J.V.), Leiden University Medical Centre; and Department of Immunology (B.C.J.), Erasmus MC, University Medical Centre Rotterdam, the Netherlands.; Fazio R; From the Department of Neurology (H.A.-H., H.A., T.H.), Aarhus University Hospital, Denmark; Department of Neurology (A.Y.D., B.v.d.B., C.V., J.R., S.E.L., S. Arends, L.W.G.L., K.K., B.C.J.), Erasmus MC, University Medical Centre Rotterdam, the Netherlands; Department of Neurology (A.M.S.), University of Michigan School of Medicine, Ann Arbor; Department of Neurology (S.A.Z.), University of Pittsburgh Medical Center, PA; Department of Neurology (H.J.W., A.D.), College of Medical, Veterinary and Life Sciences, University of Glasgow, United Kingdom; Department of Neurology (D.R.C.), Johns Hopkins University School of Medicine, Baltimore, MD; Department of Neurology (K.C.G.), St. Elizabeth's Medical Centre, Tufts University, School of Medicine, Boston, MA; Laboratory of Gut-Brain Signaling (Z.I.); Laboratory Sciences and Services Division (LSSD) (Z.I.), icddr,b; National Institute of Neurosciences and Hospital (Q.D.M.), Dhaka, Bangladesh; Department of Neurology (S.H.S.), Odense University Hospital and University of Southern Denmark; Department of Neurology (S. Kusunoki), Kindai University Faculty of Medicine, Osaka-Sayama City, Japan; Department of Neurology (C.C.), Neuromuscular Unit, Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Division of Neurology (K.B.), Department of Medicine, Groote Schuur Hospital, University of Cape Town, South Africa; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, United Kingdom; Department of Neurology (B.v.d.B., H.K.), Franciscus Gasthuis & Vlietland (location: Vlietland Hospital), Schiedam; Department of Neurology (S. Arends, P.W.W.), Haga Hospital, Den Haag; Department of Neurology (L.W.G.L., L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (S. Kuwabara), Chiba University, Chuo-ku, Japan; Department of Neurology (P.V.d.B.), Neuromuscular Reference Centre, University Hospital Saint-Luc, University of Louvain, Brussels, Belgium; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Dysimmune Neuropathies Unit (G.A.M.), Department of Systems Medicine, Tor Vergata University Hospital, Rome, Italy; Department of Medicine (N.S.), University of Malaya, Kuala Lumpur, Malaysia; Department of Neurology (G.G.), University Hospital of Modena, Italy; Department of Clinical Neurophysiology (Y.P.), Reference Centre for NMD, CHU Nantes, Nantes, France; Department of Neurology (J.B.), Saarland University Medical School, Homburg (previous hospital), and MVZ Pfalzklinikum (J.B.), Kusel, Germany (current hospital); Department of Neurology (K.K., R.P.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (C.M.), Hospital Británico, Buenos Aires, Argentina; Department of Neurology (M.J.S.T.), Hospital Marques de Valdecilla, Santander; Department of Neurology (L.Q., L.M.-A.), Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, CIBERER and ERN-NMD, Spain; Department of Neurology (Y.W.), Affiliated Hospital of Jining Medical University, Shandong Province, China; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Research Hospital, Milan University, Italy; Nuffield Department of Clinical Neurosciences (S.R.), University of Oxford and Oxford University Hospitals NHS Foundation Trust, United Kingdom; Department of Neurosciences, Ophthalmology, Rehabilitation, Genetics and Maternal Sciences (A.S.), University of Genova, and IRCCS San Martino Hospital (A.S.), Genova, Italy; Department of Neurology (J.P.), Hospital Clínico de Santiago, Travesia Choupana, Santiago de Compostela (A Coruña), Spain; Department of Neurology (F.H.V.), Franciscus Gasthuis & Vlietland (location: Franciscus Gasthuis), Rotterdam, the Netherlands; Department of Neurology (W.W., N.K.), University of Vermont Medical Centre, Burlington; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (V.G., B.S.), Montefiore Medical Center, Bronx, NY; Department of Neurology (G.C.), University Milano-Bicocca, Monza, Italy; Department of Neurology (G.G.-G.), Hospital Universitario Infanta Sofía, San Sebastián de los Reyes, Spain; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, FLENI, Buenos Aires, Argentina; Department of Neurology (H.D.K.), University Health Network, University of Toronto, Ontario, Canada; Department of Neurology (E.D.), University Hospital of Larissa, Greece; Department of Neurology (S. Attarian), Reference Centre for NMD, CHU Timone ERN NMD, Marseille, France; Department of Neurology (A.J.v.d.K., F.E.), Amsterdam University Medical Centre, University of Amsterdam, Neuroscience Institute; Department of Neurology (J.P.A.S.), Maasstad Hospital, Rotterdam; Department of Neurology (H.J.G.), Reinier de Graaf Hospital, Reinier de Graafweg, Delft, the Netherlands; Department of Neurology (R.D.M.H.), King's College Hospital, Denmark Hill, London; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, United Kingdom; Department of Neurology (K.A.S.), University of Texas Health Science Centre at Houston; Department of Biology (N.K., S. Karafiath), Utah Valley University, Orem; Department of Neurology (M.V.), Lahey Hospital and Medical Center, Tufts University School of Medicine, Burlington, MA; Department of Neurology, Mental Health and Sensory Organs (NESMOS) (G.A.), Faculty of Medicine and Psychology, University of Rome 'Sapienza,' Sant' Andrea Hospital, Italy; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Alberta, Canada; Department of Neurology (C.F.), Maastricht University Medical Centre, the Netherlands; Department of Neurology (M.B.), Leeds Teaching Hospitals; Department of Neurology (R.C.R.), Addenbrooke's Hospital, Cambridge, United Kingdom; Department of Neurology (N.J.S.), University at Buffalo Jacobs School of Medicine and Biomedical Sciences, NY; Department of Neurology (R.F.), Scientific Institute San Raffaele, Milano, Italy; Department of Neurology (G.W.v.D.), Canisius Wilhelmina Hospital, Nijmegen; Department of Neurology (M.P.J.G.), Jeroen Bosch Hospital, 's-Hertogenbosch; Department of Neurology (J.V.), Leiden University Medical Centre; and Department of Immunology (B.C.J.), Erasmus MC, University Medical Centre Rotterdam, the Netherlands.; van Dijk GW; From the Department of Neurology (H.A.-H., H.A., T.H.), Aarhus University Hospital, Denmark; Department of Neurology (A.Y.D., B.v.d.B., C.V., J.R., S.E.L., S. Arends, L.W.G.L., K.K., B.C.J.), Erasmus MC, University Medical Centre Rotterdam, the Netherlands; Department of Neurology (A.M.S.), University of Michigan School of Medicine, Ann Arbor; Department of Neurology (S.A.Z.), University of Pittsburgh Medical Center, PA; Department of Neurology (H.J.W., A.D.), College of Medical, Veterinary and Life Sciences, University of Glasgow, United Kingdom; Department of Neurology (D.R.C.), Johns Hopkins University School of Medicine, Baltimore, MD; Department of Neurology (K.C.G.), St. Elizabeth's Medical Centre, Tufts University, School of Medicine, Boston, MA; Laboratory of Gut-Brain Signaling (Z.I.); Laboratory Sciences and Services Division (LSSD) (Z.I.), icddr,b; National Institute of Neurosciences and Hospital (Q.D.M.), Dhaka, Bangladesh; Department of Neurology (S.H.S.), Odense University Hospital and University of Southern Denmark; Department of Neurology (S. Kusunoki), Kindai University Faculty of Medicine, Osaka-Sayama City, Japan; Department of Neurology (C.C.), Neuromuscular Unit, Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Division of Neurology (K.B.), Department of Medicine, Groote Schuur Hospital, University of Cape Town, South Africa; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, United Kingdom; Department of Neurology (B.v.d.B., H.K.), Franciscus Gasthuis & Vlietland (location: Vlietland Hospital), Schiedam; Department of Neurology (S. Arends, P.W.W.), Haga Hospital, Den Haag; Department of Neurology (L.W.G.L., L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (S. Kuwabara), Chiba University, Chuo-ku, Japan; Department of Neurology (P.V.d.B.), Neuromuscular Reference Centre, University Hospital Saint-Luc, University of Louvain, Brussels, Belgium; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Dysimmune Neuropathies Unit (G.A.M.), Department of Systems Medicine, Tor Vergata University Hospital, Rome, Italy; Department of Medicine (N.S.), University of Malaya, Kuala Lumpur, Malaysia; Department of Neurology (G.G.), University Hospital of Modena, Italy; Department of Clinical Neurophysiology (Y.P.), Reference Centre for NMD, CHU Nantes, Nantes, France; Department of Neurology (J.B.), Saarland University Medical School, Homburg (previous hospital), and MVZ Pfalzklinikum (J.B.), Kusel, Germany (current hospital); Department of Neurology (K.K., R.P.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (C.M.), Hospital Británico, Buenos Aires, Argentina; Department of Neurology (M.J.S.T.), Hospital Marques de Valdecilla, Santander; Department of Neurology (L.Q., L.M.-A.), Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, CIBERER and ERN-NMD, Spain; Department of Neurology (Y.W.), Affiliated Hospital of Jining Medical University, Shandong Province, China; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Research Hospital, Milan University, Italy; Nuffield Department of Clinical Neurosciences (S.R.), University of Oxford and Oxford University Hospitals NHS Foundation Trust, United Kingdom; Department of Neurosciences, Ophthalmology, Rehabilitation, Genetics and Maternal Sciences (A.S.), University of Genova, and IRCCS San Martino Hospital (A.S.), Genova, Italy; Department of Neurology (J.P.), Hospital Clínico de Santiago, Travesia Choupana, Santiago de Compostela (A Coruña), Spain; Department of Neurology (F.H.V.), Franciscus Gasthuis & Vlietland (location: Franciscus Gasthuis), Rotterdam, the Netherlands; Department of Neurology (W.W., N.K.), University of Vermont Medical Centre, Burlington; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (V.G., B.S.), Montefiore Medical Center, Bronx, NY; Department of Neurology (G.C.), University Milano-Bicocca, Monza, Italy; Department of Neurology (G.G.-G.), Hospital Universitario Infanta Sofía, San Sebastián de los Reyes, Spain; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, FLENI, Buenos Aires, Argentina; Department of Neurology (H.D.K.), University Health Network, University of Toronto, Ontario, Canada; Department of Neurology (E.D.), University Hospital of Larissa, Greece; Department of Neurology (S. Attarian), Reference Centre for NMD, CHU Timone ERN NMD, Marseille, France; Department of Neurology (A.J.v.d.K., F.E.), Amsterdam University Medical Centre, University of Amsterdam, Neuroscience Institute; Department of Neurology (J.P.A.S.), Maasstad Hospital, Rotterdam; Department of Neurology (H.J.G.), Reinier de Graaf Hospital, Reinier de Graafweg, Delft, the Netherlands; Department of Neurology (R.D.M.H.), King's College Hospital, Denmark Hill, London; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, United Kingdom; Department of Neurology (K.A.S.), University of Texas Health Science Centre at Houston; Department of Biology (N.K., S. Karafiath), Utah Valley University, Orem; Department of Neurology (M.V.), Lahey Hospital and Medical Center, Tufts University School of Medicine, Burlington, MA; Department of Neurology, Mental Health and Sensory Organs (NESMOS) (G.A.), Faculty of Medicine and Psychology, University of Rome 'Sapienza,' Sant' Andrea Hospital, Italy; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Alberta, Canada; Department of Neurology (C.F.), Maastricht University Medical Centre, the Netherlands; Department of Neurology (M.B.), Leeds Teaching Hospitals; Department of Neurology (R.C.R.), Addenbrooke's Hospital, Cambridge, United Kingdom; Department of Neurology (N.J.S.), University at Buffalo Jacobs School of Medicine and Biomedical Sciences, NY; Department of Neurology (R.F.), Scientific Institute San Raffaele, Milano, Italy; Department of Neurology (G.W.v.D.), Canisius Wilhelmina Hospital, Nijmegen; Department of Neurology (M.P.J.G.), Jeroen Bosch Hospital, 's-Hertogenbosch; Department of Neurology (J.V.), Leiden University Medical Centre; and Department of Immunology (B.C.J.), Erasmus MC, University Medical Centre Rotterdam, the Netherlands.; Garssen MPJ; From the Department of Neurology (H.A.-H., H.A., T.H.), Aarhus University Hospital, Denmark; Department of Neurology (A.Y.D., B.v.d.B., C.V., J.R., S.E.L., S. Arends, L.W.G.L., K.K., B.C.J.), Erasmus MC, University Medical Centre Rotterdam, the Netherlands; Department of Neurology (A.M.S.), University of Michigan School of Medicine, Ann Arbor; Department of Neurology (S.A.Z.), University of Pittsburgh Medical Center, PA; Department of Neurology (H.J.W., A.D.), College of Medical, Veterinary and Life Sciences, University of Glasgow, United Kingdom; Department of Neurology (D.R.C.), Johns Hopkins University School of Medicine, Baltimore, MD; Department of Neurology (K.C.G.), St. Elizabeth's Medical Centre, Tufts University, School of Medicine, Boston, MA; Laboratory of Gut-Brain Signaling (Z.I.); Laboratory Sciences and Services Division (LSSD) (Z.I.), icddr,b; National Institute of Neurosciences and Hospital (Q.D.M.), Dhaka, Bangladesh; Department of Neurology (S.H.S.), Odense University Hospital and University of Southern Denmark; Department of Neurology (S. Kusunoki), Kindai University Faculty of Medicine, Osaka-Sayama City, Japan; Department of Neurology (C.C.), Neuromuscular Unit, Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Division of Neurology (K.B.), Department of Medicine, Groote Schuur Hospital, University of Cape Town, South Africa; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, United Kingdom; Department of Neurology (B.v.d.B., H.K.), Franciscus Gasthuis & Vlietland (location: Vlietland Hospital), Schiedam; Department of Neurology (S. Arends, P.W.W.), Haga Hospital, Den Haag; Department of Neurology (L.W.G.L., L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (S. Kuwabara), Chiba University, Chuo-ku, Japan; Department of Neurology (P.V.d.B.), Neuromuscular Reference Centre, University Hospital Saint-Luc, University of Louvain, Brussels, Belgium; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Dysimmune Neuropathies Unit (G.A.M.), Department of Systems Medicine, Tor Vergata University Hospital, Rome, Italy; Department of Medicine (N.S.), University of Malaya, Kuala Lumpur, Malaysia; Department of Neurology (G.G.), University Hospital of Modena, Italy; Department of Clinical Neurophysiology (Y.P.), Reference Centre for NMD, CHU Nantes, Nantes, France; Department of Neurology (J.B.), Saarland University Medical School, Homburg (previous hospital), and MVZ Pfalzklinikum (J.B.), Kusel, Germany (current hospital); Department of Neurology (K.K., R.P.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (C.M.), Hospital Británico, Buenos Aires, Argentina; Department of Neurology (M.J.S.T.), Hospital Marques de Valdecilla, Santander; Department of Neurology (L.Q., L.M.-A.), Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, CIBERER and ERN-NMD, Spain; Department of Neurology (Y.W.), Affiliated Hospital of Jining Medical University, Shandong Province, China; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Research Hospital, Milan University, Italy; Nuffield Department of Clinical Neurosciences (S.R.), University of Oxford and Oxford University Hospitals NHS Foundation Trust, United Kingdom; Department of Neurosciences, Ophthalmology, Rehabilitation, Genetics and Maternal Sciences (A.S.), University of Genova, and IRCCS San Martino Hospital (A.S.), Genova, Italy; Department of Neurology (J.P.), Hospital Clínico de Santiago, Travesia Choupana, Santiago de Compostela (A Coruña), Spain; Department of Neurology (F.H.V.), Franciscus Gasthuis & Vlietland (location: Franciscus Gasthuis), Rotterdam, the Netherlands; Department of Neurology (W.W., N.K.), University of Vermont Medical Centre, Burlington; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (V.G., B.S.), Montefiore Medical Center, Bronx, NY; Department of Neurology (G.C.), University Milano-Bicocca, Monza, Italy; Department of Neurology (G.G.-G.), Hospital Universitario Infanta Sofía, San Sebastián de los Reyes, Spain; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, FLENI, Buenos Aires, Argentina; Department of Neurology (H.D.K.), University Health Network, University of Toronto, Ontario, Canada; Department of Neurology (E.D.), University Hospital of Larissa, Greece; Department of Neurology (S. Attarian), Reference Centre for NMD, CHU Timone ERN NMD, Marseille, France; Department of Neurology (A.J.v.d.K., F.E.), Amsterdam University Medical Centre, University of Amsterdam, Neuroscience Institute; Department of Neurology (J.P.A.S.), Maasstad Hospital, Rotterdam; Department of Neurology (H.J.G.), Reinier de Graaf Hospital, Reinier de Graafweg, Delft, the Netherlands; Department of Neurology (R.D.M.H.), King's College Hospital, Denmark Hill, London; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, United Kingdom; Department of Neurology (K.A.S.), University of Texas Health Science Centre at Houston; Department of Biology (N.K., S. Karafiath), Utah Valley University, Orem; Department of Neurology (M.V.), Lahey Hospital and Medical Center, Tufts University School of Medicine, Burlington, MA; Department of Neurology, Mental Health and Sensory Organs (NESMOS) (G.A.), Faculty of Medicine and Psychology, University of Rome 'Sapienza,' Sant' Andrea Hospital, Italy; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Alberta, Canada; Department of Neurology (C.F.), Maastricht University Medical Centre, the Netherlands; Department of Neurology (M.B.), Leeds Teaching Hospitals; Department of Neurology (R.C.R.), Addenbrooke's Hospital, Cambridge, United Kingdom; Department of Neurology (N.J.S.), University at Buffalo Jacobs School of Medicine and Biomedical Sciences, NY; Department of Neurology (R.F.), Scientific Institute San Raffaele, Milano, Italy; Department of Neurology (G.W.v.D.), Canisius Wilhelmina Hospital, Nijmegen; Department of Neurology (M.P.J.G.), Jeroen Bosch Hospital, 's-Hertogenbosch; Department of Neurology (J.V.), Leiden University Medical Centre; and Department of Immunology (B.C.J.), Erasmus MC, University Medical Centre Rotterdam, the Netherlands.; Verschuuren J; From the Department of Neurology (H.A.-H., H.A., T.H.), Aarhus University Hospital, Denmark; Department of Neurology (A.Y.D., B.v.d.B., C.V., J.R., S.E.L., S. Arends, L.W.G.L., K.K., B.C.J.), Erasmus MC, University Medical Centre Rotterdam, the Netherlands; Department of Neurology (A.M.S.), University of Michigan School of Medicine, Ann Arbor; Department of Neurology (S.A.Z.), University of Pittsburgh Medical Center, PA; Department of Neurology (H.J.W., A.D.), College of Medical, Veterinary and Life Sciences, University of Glasgow, United Kingdom; Department of Neurology (D.R.C.), Johns Hopkins University School of Medicine, Baltimore, MD; Department of Neurology (K.C.G.), St. Elizabeth's Medical Centre, Tufts University, School of Medicine, Boston, MA; Laboratory of Gut-Brain Signaling (Z.I.); Laboratory Sciences and Services Division (LSSD) (Z.I.), icddr,b; National Institute of Neurosciences and Hospital (Q.D.M.), Dhaka, Bangladesh; Department of Neurology (S.H.S.), Odense University Hospital and University of Southern Denmark; Department of Neurology (S. Kusunoki), Kindai University Faculty of Medicine, Osaka-Sayama City, Japan; Department of Neurology (C.C.), Neuromuscular Unit, Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Division of Neurology (K.B.), Department of Medicine, Groote Schuur Hospital, University of Cape Town, South Africa; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, United Kingdom; Department of Neurology (B.v.d.B., H.K.), Franciscus Gasthuis & Vlietland (location: Vlietland Hospital), Schiedam; Department of Neurology (S. Arends, P.W.W.), Haga Hospital, Den Haag; Department of Neurology (L.W.G.L., L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (S. Kuwabara), Chiba University, Chuo-ku, Japan; Department of Neurology (P.V.d.B.), Neuromuscular Reference Centre, University Hospital Saint-Luc, University of Louvain, Brussels, Belgium; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Dysimmune Neuropathies Unit (G.A.M.), Department of Systems Medicine, Tor Vergata University Hospital, Rome, Italy; Department of Medicine (N.S.), University of Malaya, Kuala Lumpur, Malaysia; Department of Neurology (G.G.), University Hospital of Modena, Italy; Department of Clinical Neurophysiology (Y.P.), Reference Centre for NMD, CHU Nantes, Nantes, France; Department of Neurology (J.B.), Saarland University Medical School, Homburg (previous hospital), and MVZ Pfalzklinikum (J.B.), Kusel, Germany (current hospital); Department of Neurology (K.K., R.P.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (C.M.), Hospital Británico, Buenos Aires, Argentina; Department of Neurology (M.J.S.T.), Hospital Marques de Valdecilla, Santander; Department of Neurology (L.Q., L.M.-A.), Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, CIBERER and ERN-NMD, Spain; Department of Neurology (Y.W.), Affiliated Hospital of Jining Medical University, Shandong Province, China; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Research Hospital, Milan University, Italy; Nuffield Department of Clinical Neurosciences (S.R.), University of Oxford and Oxford University Hospitals NHS Foundation Trust, United Kingdom; Department of Neurosciences, Ophthalmology, Rehabilitation, Genetics and Maternal Sciences (A.S.), University of Genova, and IRCCS San Martino Hospital (A.S.), Genova, Italy; Department of Neurology (J.P.), Hospital Clínico de Santiago, Travesia Choupana, Santiago de Compostela (A Coruña), Spain; Department of Neurology (F.H.V.), Franciscus Gasthuis & Vlietland (location: Franciscus Gasthuis), Rotterdam, the Netherlands; Department of Neurology (W.W., N.K.), University of Vermont Medical Centre, Burlington; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (V.G., B.S.), Montefiore Medical Center, Bronx, NY; Department of Neurology (G.C.), University Milano-Bicocca, Monza, Italy; Department of Neurology (G.G.-G.), Hospital Universitario Infanta Sofía, San Sebastián de los Reyes, Spain; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, FLENI, Buenos Aires, Argentina; Department of Neurology (H.D.K.), University Health Network, University of Toronto, Ontario, Canada; Department of Neurology (E.D.), University Hospital of Larissa, Greece; Department of Neurology (S. Attarian), Reference Centre for NMD, CHU Timone ERN NMD, Marseille, France; Department of Neurology (A.J.v.d.K., F.E.), Amsterdam University Medical Centre, University of Amsterdam, Neuroscience Institute; Department of Neurology (J.P.A.S.), Maasstad Hospital, Rotterdam; Department of Neurology (H.J.G.), Reinier de Graaf Hospital, Reinier de Graafweg, Delft, the Netherlands; Department of Neurology (R.D.M.H.), King's College Hospital, Denmark Hill, London; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, United Kingdom; Department of Neurology (K.A.S.), University of Texas Health Science Centre at Houston; Department of Biology (N.K., S. Karafiath), Utah Valley University, Orem; Department of Neurology (M.V.), Lahey Hospital and Medical Center, Tufts University School of Medicine, Burlington, MA; Department of Neurology, Mental Health and Sensory Organs (NESMOS) (G.A.), Faculty of Medicine and Psychology, University of Rome 'Sapienza,' Sant' Andrea Hospital, Italy; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Alberta, Canada; Department of Neurology (C.F.), Maastricht University Medical Centre, the Netherlands; Department of Neurology (M.B.), Leeds Teaching Hospitals; Department of Neurology (R.C.R.), Addenbrooke's Hospital, Cambridge, United Kingdom; Department of Neurology (N.J.S.), University at Buffalo Jacobs School of Medicine and Biomedical Sciences, NY; Department of Neurology (R.F.), Scientific Institute San Raffaele, Milano, Italy; Department of Neurology (G.W.v.D.), Canisius Wilhelmina Hospital, Nijmegen; Department of Neurology (M.P.J.G.), Jeroen Bosch Hospital, 's-Hertogenbosch; Department of Neurology (J.V.), Leiden University Medical Centre; and Department of Immunology (B.C.J.), Erasmus MC, University Medical Centre Rotterdam, the Netherlands.; Harbo T; From the Department of Neurology (H.A.-H., H.A., T.H.), Aarhus University Hospital, Denmark; Department of Neurology (A.Y.D., B.v.d.B., C.V., J.R., S.E.L., S. Arends, L.W.G.L., K.K., B.C.J.), Erasmus MC, University Medical Centre Rotterdam, the Netherlands; Department of Neurology (A.M.S.), University of Michigan School of Medicine, Ann Arbor; Department of Neurology (S.A.Z.), University of Pittsburgh Medical Center, PA; Department of Neurology (H.J.W., A.D.), College of Medical, Veterinary and Life Sciences, University of Glasgow, United Kingdom; Department of Neurology (D.R.C.), Johns Hopkins University School of Medicine, Baltimore, MD; Department of Neurology (K.C.G.), St. Elizabeth's Medical Centre, Tufts University, School of Medicine, Boston, MA; Laboratory of Gut-Brain Signaling (Z.I.); Laboratory Sciences and Services Division (LSSD) (Z.I.), icddr,b; National Institute of Neurosciences and Hospital (Q.D.M.), Dhaka, Bangladesh; Department of Neurology (S.H.S.), Odense University Hospital and University of Southern Denmark; Department of Neurology (S. Kusunoki), Kindai University Faculty of Medicine, Osaka-Sayama City, Japan; Department of Neurology (C.C.), Neuromuscular Unit, Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Division of Neurology (K.B.), Department of Medicine, Groote Schuur Hospital, University of Cape Town, South Africa; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, United Kingdom; Department of Neurology (B.v.d.B., H.K.), Franciscus Gasthuis & Vlietland (location: Vlietland Hospital), Schiedam; Department of Neurology (S. Arends, P.W.W.), Haga Hospital, Den Haag; Department of Neurology (L.W.G.L., L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (S. Kuwabara), Chiba University, Chuo-ku, Japan; Department of Neurology (P.V.d.B.), Neuromuscular Reference Centre, University Hospital Saint-Luc, University of Louvain, Brussels, Belgium; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Dysimmune Neuropathies Unit (G.A.M.), Department of Systems Medicine, Tor Vergata University Hospital, Rome, Italy; Department of Medicine (N.S.), University of Malaya, Kuala Lumpur, Malaysia; Department of Neurology (G.G.), University Hospital of Modena, Italy; Department of Clinical Neurophysiology (Y.P.), Reference Centre for NMD, CHU Nantes, Nantes, France; Department of Neurology (J.B.), Saarland University Medical School, Homburg (previous hospital), and MVZ Pfalzklinikum (J.B.), Kusel, Germany (current hospital); Department of Neurology (K.K., R.P.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (C.M.), Hospital Británico, Buenos Aires, Argentina; Department of Neurology (M.J.S.T.), Hospital Marques de Valdecilla, Santander; Department of Neurology (L.Q., L.M.-A.), Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, CIBERER and ERN-NMD, Spain; Department of Neurology (Y.W.), Affiliated Hospital of Jining Medical University, Shandong Province, China; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Research Hospital, Milan University, Italy; Nuffield Department of Clinical Neurosciences (S.R.), University of Oxford and Oxford University Hospitals NHS Foundation Trust, United Kingdom; Department of Neurosciences, Ophthalmology, Rehabilitation, Genetics and Maternal Sciences (A.S.), University of Genova, and IRCCS San Martino Hospital (A.S.), Genova, Italy; Department of Neurology (J.P.), Hospital Clínico de Santiago, Travesia Choupana, Santiago de Compostela (A Coruña), Spain; Department of Neurology (F.H.V.), Franciscus Gasthuis & Vlietland (location: Franciscus Gasthuis), Rotterdam, the Netherlands; Department of Neurology (W.W., N.K.), University of Vermont Medical Centre, Burlington; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (V.G., B.S.), Montefiore Medical Center, Bronx, NY; Department of Neurology (G.C.), University Milano-Bicocca, Monza, Italy; Department of Neurology (G.G.-G.), Hospital Universitario Infanta Sofía, San Sebastián de los Reyes, Spain; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, FLENI, Buenos Aires, Argentina; Department of Neurology (H.D.K.), University Health Network, University of Toronto, Ontario, Canada; Department of Neurology (E.D.), University Hospital of Larissa, Greece; Department of Neurology (S. Attarian), Reference Centre for NMD, CHU Timone ERN NMD, Marseille, France; Department of Neurology (A.J.v.d.K., F.E.), Amsterdam University Medical Centre, University of Amsterdam, Neuroscience Institute; Department of Neurology (J.P.A.S.), Maasstad Hospital, Rotterdam; Department of Neurology (H.J.G.), Reinier de Graaf Hospital, Reinier de Graafweg, Delft, the Netherlands; Department of Neurology (R.D.M.H.), King's College Hospital, Denmark Hill, London; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, United Kingdom; Department of Neurology (K.A.S.), University of Texas Health Science Centre at Houston; Department of Biology (N.K., S. Karafiath), Utah Valley University, Orem; Department of Neurology (M.V.), Lahey Hospital and Medical Center, Tufts University School of Medicine, Burlington, MA; Department of Neurology, Mental Health and Sensory Organs (NESMOS) (G.A.), Faculty of Medicine and Psychology, University of Rome 'Sapienza,' Sant' Andrea Hospital, Italy; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Alberta, Canada; Department of Neurology (C.F.), Maastricht University Medical Centre, the Netherlands; Department of Neurology (M.B.), Leeds Teaching Hospitals; Department of Neurology (R.C.R.), Addenbrooke's Hospital, Cambridge, United Kingdom; Department of Neurology (N.J.S.), University at Buffalo Jacobs School of Medicine and Biomedical Sciences, NY; Department of Neurology (R.F.), Scientific Institute San Raffaele, Milano, Italy; Department of Neurology (G.W.v.D.), Canisius Wilhelmina Hospital, Nijmegen; Department of Neurology (M.P.J.G.), Jeroen Bosch Hospital, 's-Hertogenbosch; Department of Neurology (J.V.), Leiden University Medical Centre; and Department of Immunology (B.C.J.), Erasmus MC, University Medical Centre Rotterdam, the Netherlands.; Jacobs BC; From the Department of Neurology (H.A.-H., H.A., T.H.), Aarhus University Hospital, Denmark; Department of Neurology (A.Y.D., B.v.d.B., C.V., J.R., S.E.L., S. Arends, L.W.G.L., K.K., B.C.J.), Erasmus MC, University Medical Centre Rotterdam, the Netherlands; Department of Neurology (A.M.S.), University of Michigan School of Medicine, Ann Arbor; Department of Neurology (S.A.Z.), University of Pittsburgh Medical Center, PA; Department of Neurology (H.J.W., A.D.), College of Medical, Veterinary and Life Sciences, University of Glasgow, United Kingdom; Department of Neurology (D.R.C.), Johns Hopkins University School of Medicine, Baltimore, MD; Department of Neurology (K.C.G.), St. Elizabeth's Medical Centre, Tufts University, School of Medicine, Boston, MA; Laboratory of Gut-Brain Signaling (Z.I.); Laboratory Sciences and Services Division (LSSD) (Z.I.), icddr,b; National Institute of Neurosciences and Hospital (Q.D.M.), Dhaka, Bangladesh; Department of Neurology (S.H.S.), Odense University Hospital and University of Southern Denmark; Department of Neurology (S. Kusunoki), Kindai University Faculty of Medicine, Osaka-Sayama City, Japan; Department of Neurology (C.C.), Neuromuscular Unit, Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Division of Neurology (K.B.), Department of Medicine, Groote Schuur Hospital, University of Cape Town, South Africa; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, United Kingdom; Department of Neurology (B.v.d.B., H.K.), Franciscus Gasthuis & Vlietland (location: Vlietland Hospital), Schiedam; Department of Neurology (S. Arends, P.W.W.), Haga Hospital, Den Haag; Department of Neurology (L.W.G.L., L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (S. Kuwabara), Chiba University, Chuo-ku, Japan; Department of Neurology (P.V.d.B.), Neuromuscular Reference Centre, University Hospital Saint-Luc, University of Louvain, Brussels, Belgium; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Dysimmune Neuropathies Unit (G.A.M.), Department of Systems Medicine, Tor Vergata University Hospital, Rome, Italy; Department of Medicine (N.S.), University of Malaya, Kuala Lumpur, Malaysia; Department of Neurology (G.G.), University Hospital of Modena, Italy; Department of Clinical Neurophysiology (Y.P.), Reference Centre for NMD, CHU Nantes, Nantes, France; Department of Neurology (J.B.), Saarland University Medical School, Homburg (previous hospital), and MVZ Pfalzklinikum (J.B.), Kusel, Germany (current hospital); Department of Neurology (K.K., R.P.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (C.M.), Hospital Británico, Buenos Aires, Argentina; Department of Neurology (M.J.S.T.), Hospital Marques de Valdecilla, Santander; Department of Neurology (L.Q., L.M.-A.), Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, CIBERER and ERN-NMD, Spain; Department of Neurology (Y.W.), Affiliated Hospital of Jining Medical University, Shandong Province, China; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Research Hospital, Milan University, Italy; Nuffield Department of Clinical Neurosciences (S.R.), University of Oxford and Oxford University Hospitals NHS Foundation Trust, United Kingdom; Department of Neurosciences, Ophthalmology, Rehabilitation, Genetics and Maternal Sciences (A.S.), University of Genova, and IRCCS San Martino Hospital (A.S.), Genova, Italy; Department of Neurology (J.P.), Hospital Clínico de Santiago, Travesia Choupana, Santiago de Compostela (A Coruña), Spain; Department of Neurology (F.H.V.), Franciscus Gasthuis & Vlietland (location: Franciscus Gasthuis), Rotterdam, the Netherlands; Department of Neurology (W.W., N.K.), University of Vermont Medical Centre, Burlington; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (V.G., B.S.), Montefiore Medical Center, Bronx, NY; Department of Neurology (G.C.), University Milano-Bicocca, Monza, Italy; Department of Neurology (G.G.-G.), Hospital Universitario Infanta Sofía, San Sebastián de los Reyes, Spain; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, FLENI, Buenos Aires, Argentina; Department of Neurology (H.D.K.), University Health Network, University of Toronto, Ontario, Canada; Department of Neurology (E.D.), University Hospital of Larissa, Greece; Department of Neurology (S. Attarian), Reference Centre for NMD, CHU Timone ERN NMD, Marseille, France; Department of Neurology (A.J.v.d.K., F.E.), Amsterdam University Medical Centre, University of Amsterdam, Neuroscience Institute; Department of Neurology (J.P.A.S.), Maasstad Hospital, Rotterdam; Department of Neurology (H.J.G.), Reinier de Graaf Hospital, Reinier de Graafweg, Delft, the Netherlands; Department of Neurology (R.D.M.H.), King's College Hospital, Denmark Hill, London; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, United Kingdom; Department of Neurology (K.A.S.), University of Texas Health Science Centre at Houston; Department of Biology (N.K., S. Karafiath), Utah Valley University, Orem; Department of Neurology (M.V.), Lahey Hospital and Medical Center, Tufts University School of Medicine, Burlington, MA; Department of Neurology, Mental Health and Sensory Organs (NESMOS) (G.A.), Faculty of Medicine and Psychology, University of Rome 'Sapienza,' Sant' Andrea Hospital, Italy; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Alberta, Canada; Department of Neurology (C.F.), Maastricht University Medical Centre, the Netherlands; Department of Neurology (M.B.), Leeds Teaching Hospitals; Department of Neurology (R.C.R.), Addenbrooke's Hospital, Cambridge, United Kingdom; Department of Neurology (N.J.S.), University at Buffalo Jacobs School of Medicine and Biomedical Sciences, NY; Department of Neurology (R.F.), Scientific Institute San Raffaele, Milano, Italy; Department of Neurology (G.W.v.D.), Canisius Wilhelmina Hospital, Nijmegen; Department of Neurology (M.P.J.G.), Jeroen Bosch Hospital, 's-Hertogenbosch; Department of Neurology (J.V.), Leiden University Medical Centre; and Department of Immunology (B.C.J.), Erasmus MC, University Medical Centre Rotterdam, the Netherlands. b.jacobs@erasmusmc.nl.

Publisher: Lippincott Williams & Wilkins Country of Publication: United States NLM ID: 0401060 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1526-632X (Electronic) Linking ISSN: 00283878 NLM ISO Abbreviation: Neurology Subsets: MEDLINE

Paolicelli D; Department of Basic Medical Sciences, Neurosciences, and Sense Organs, Multiple Sclerosis Center, University of Bari 'Aldo Moro', Bari, Italy. damiano.paolicelli@uniba.it.; Lucisano G; Center for Outcomes Research and Clinical Epidemiology, Pescara, Italy.; Manni A; Department of Basic Medical Sciences, Neurosciences, and Sense Organs, Multiple Sclerosis Center, University of Bari 'Aldo Moro', Bari, Italy.; Avolio C; Department of Medical and Surgical Sciences, University of Foggia, Foggia, Italy.; Bonavita S; Department of Advanced Medical and Surgical Sciences, University of Campania 'Luigi Vanvitelli', Napoli, Italy.; Brescia Morra V; Department of Neurosciences, Reproductive and Odontostomatological Sciences, 'Federico II' University of Naples, Naples, Italy.; Capobianco M; Department of Neurology and Regional Multiple Sclerosis Centre, University Hospital San Luigi, Orbassano, TO, Italy.; Cocco E; Department of Medical Science and Public Health, University of Cagliari and Multiple Sclerosis Center, Cagliari, Italy.; Conte A; Department of Human Neurosciences, Sapienza, University of Rome, Rome, Italy.; IRCCS Neuromed, Pozzilli, IS, Italy.; De Luca G; Neurology Clinic, Multiple Sclerosis Centre, SS Annunziata Hospital, Chieti, Italy.; De Robertis F; Department of Neurology, Vito Fazzi Hospital, ASL, Lecce, Italy.; Gasperini C; Department of Neuroscience, San Camillo Hospital, Rome, Italy.; Gatto M; Neurology Unit, 'F. Miulli' Hospital, Acquaviva delle Fonti BA, Italy.; Gazzola P; Departemental Center for the Diagnosis and Treatment of Demyelinating Diseases, Sestri Ponente, Genoa, Italy.; Lus G; Department of Advanced Medical and Surgical Sciences, University of Campania 'Luigi Vanvitelli', Napoli, Italy.; Iaffaldano A; Department of Basic Medical Sciences, Neurosciences, and Sense Organs, Multiple Sclerosis Center, University of Bari 'Aldo Moro', Bari, Italy.; Iaffaldano P; Department of Basic Medical Sciences, Neurosciences, and Sense Organs, Multiple Sclerosis Center, University of Bari 'Aldo Moro', Bari, Italy.; Maimone D; Multiple Sclerosis Center, Garibaldi Hospital, Catania, Italy.; Mallucci G; Multiple Sclerosis Center of IRCCS Mondino Foundation, Pavia, Italy.; Maniscalco GT; Multiple Sclerosis Regional Center, A. Cardarelli Hospital, Naples, Italy.; Marfia GA; Department of Systems Medicine, Multiple Sclerosis Clinical and Research Center, University of Rome Tor Vergata, Rome, Italy.; Patti F; Department 'G.F. Ingrassia', Multiple Sclerosis Center, University of Catania, Catania, Italy.; Pesci I; Multiple Sclerosis Center, Ospedale di Vaio (I.P.), Fidenza, PR, Italy.; Pozzilli C; Multiple Sclerosis Center, Sant'Andrea Hospital, Sapienza University of Rome, Rome, Italy.; Department of Neurology, University La Sapienza, Rome, Italy.; Rovaris M; Multiple Sclerosis Center, IRCCS Fondazione Don Carlo Gnocchi, Milan, Italy.; Salemi G; Department of Biomedicine, Neuroscience and Advanced Diagnostics, Palermo University, Palermo, Italy.; Salvetti M; Department of Neuroscience, Mental Health and Sensory Organs, Sapienza University, Rome, Italy.; Istituto Neurologico Mediterraneo (INM) Neuromed, Pozzilli, Isernia, Italy.; Spitaleri D; UOC Neurology, AORN San G. Moscati, Avellino, Italy.; Totaro R; Department of Neurology, Demyelinating Disease Center, San Salvatore Hospital, L'Aquila, Italy.; Zaffaroni M; Multiple Sclerosis Center, Hospital of Gallarate, Gallarate, Italy.; Comi G; Department of Neurology, San Raffaele Hospital, Milan, Italy.; Amato MP; Department NEUROFARBA, University of Florence, Florence, Italy.; IRCCS and Fondazione Don Carlo Gnocchi, Florence, Italy.; Trojano M; Department of Basic Medical Sciences, Neurosciences, and Sense Organs, Multiple Sclerosis Center, University of Bari 'Aldo Moro', Bari, Italy.

Publisher: Springer-Verlag Country of Publication: Germany NLM ID: 0423161 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1432-1459 (Electronic) Linking ISSN: 03405354 NLM ISO Abbreviation: J Neurol Subsets: MEDLINE

Stampanoni Bassi M; Unit of Neurology and Neurorehabilitation, IRCCS Neuromed, Pozzilli (IS), Italy.; Tor Vergata University, Department of Systems Medicine, Via Montpellier 1, Rome, Italy.; Iezzi E; Unit of Neurology and Neurorehabilitation, IRCCS Neuromed, Pozzilli (IS), Italy.; Mori F; Tor Vergata University, Department of Systems Medicine, Via Montpellier 1, Rome, Italy.; Simonelli I; Fondazione Fatebenefratelli per la Ricerca e la Formazione Sanitaria e Sociale, Rome, Italy.; Gilio L; Unit of Neurology and Neurorehabilitation, IRCCS Neuromed, Pozzilli (IS), Italy.; Tor Vergata University, Department of Systems Medicine, Via Montpellier 1, Rome, Italy.; Buttari F; Unit of Neurology and Neurorehabilitation, IRCCS Neuromed, Pozzilli (IS), Italy.; Sica F; Unit of Neurology and Neurorehabilitation, IRCCS Neuromed, Pozzilli (IS), Italy.; De Paolis N; Unit of Neurology and Neurorehabilitation, IRCCS Neuromed, Pozzilli (IS), Italy.; Mandolesi G; Laboratory of Synaptic Immunopathology, IRCCS San Raffaele Pisana, Via di Val Cannuta 247, Rome, Italy.; San Raffaele University, Via di Val Cannuta 247, Rome, Italy.; Musella A; Laboratory of Synaptic Immunopathology, IRCCS San Raffaele Pisana, Via di Val Cannuta 247, Rome, Italy.; San Raffaele University, Via di Val Cannuta 247, Rome, Italy.; De Vito F; Unit of Neurology and Neurorehabilitation, IRCCS Neuromed, Pozzilli (IS), Italy.; Dolcetti E; Tor Vergata University, Department of Systems Medicine, Via Montpellier 1, Rome, Italy.; Bruno A; Tor Vergata University, Department of Systems Medicine, Via Montpellier 1, Rome, Italy.; Furlan R; San Raffaele Scientific Institute, Milan, Italy.; Finardi A; San Raffaele Scientific Institute, Milan, Italy.; Marfia GA; Tor Vergata University, Department of Systems Medicine, Via Montpellier 1, Rome, Italy.; Centonze D; Unit of Neurology and Neurorehabilitation, IRCCS Neuromed, Pozzilli (IS), Italy.; Tor Vergata University, Department of Systems Medicine, Via Montpellier 1, Rome, Italy.; Rizzo FR; Tor Vergata University, Department of Systems Medicine, Via Montpellier 1, Rome, Italy.

Publisher: Sage Publications Country of Publication: United States NLM ID: 100892086 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1552-6844 (Electronic) Linking ISSN: 15459683 NLM ISO Abbreviation: Neurorehabil Neural Repair Subsets: MEDLINE

Massa R; Unit Malattie Neuromuscolari, Dipartimento Medicina dei Sistemi, Università di Roma Tor Vergata, Rome, Italy. massa@uniroma2.it.; Greco G; Unit Malattie Neuromuscolari, Dipartimento Medicina dei Sistemi, Università di Roma Tor Vergata, Rome, Italy.; Testi M; Unit Genetica Medica, Azienda Ospedaliera San Camillo-Forlanini, Rome, Italy.; Rastelli E; Unit Malattie Neuromuscolari, Dipartimento Medicina dei Sistemi, Università di Roma Tor Vergata, Rome, Italy.; Terracciano C; Unit Malattie Neuromuscolari, Dipartimento Medicina dei Sistemi, Università di Roma Tor Vergata, Rome, Italy.; Frezza E; Unit Malattie Neuromuscolari, Dipartimento Medicina dei Sistemi, Università di Roma Tor Vergata, Rome, Italy.; Garibaldi M; Neurofisiopatologia, Dipartimento NESMOS, Ospedale S. Andrea, Sapienza Università di Roma, Rome, Italy.; Marfia GA; Neurologia, Dipartimento Medicina dei Sistemi, Università di Roma Tor Vergata, Rome, Italy.; Locatelli F; Laboratorio d'Immunogenetica dei Trapianti, Dipartimento di Oncoematologia e Terapia Cellulare e Genica, IRCCS OPBG, Rome, Italy.; Mercuri NB; Neurologia, Dipartimento Medicina dei Sistemi, Università di Roma Tor Vergata, Rome, Italy.; Pompeo E; Dipartimento Chirurgia Toracica, Università di Roma Tor Vergata, Rome, Italy.; Antonini G; Neurofisiopatologia, Dipartimento NESMOS, Ospedale S. Andrea, Sapienza Università di Roma, Rome, Italy.; Andreani M; Laboratorio d'Immunogenetica dei Trapianti, Dipartimento di Oncoematologia e Terapia Cellulare e Genica, IRCCS OPBG, Rome, Italy.

Publisher: Springer-Verlag Country of Publication: Germany NLM ID: 0423161 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1432-1459 (Electronic) Linking ISSN: 03405354 NLM ISO Abbreviation: J Neurol Subsets: MEDLINE

Stampanoni Bassi M; Unit of Neurology and Neurorehabilitation, IRCCS Neuromed, Pozzilli, Italy.; Gentile A; Laboratory of Synaptic Immunopathology, Department of Systems Medicine, Tor Vergata University, Rome, Italy.; Iezzi E; Unit of Neurology and Neurorehabilitation, IRCCS Neuromed, Pozzilli, Italy.; Zagaglia S; Clinica Neurologica, Università Politecnica delle Marche, Ancona, Italy.; Musella A; Laboratory of Neuroimmunology and Synaptic Plasticity, University & IRCCS San Raffaele, Rome, Italy.; Simonelli I; Servizio di Statistica Medica & Information Technology, Fondazione Fatebenefratelli per la Ricerca e la Formazione Sanitaria e Sociale, Rome, Italy.; Gilio L; Laboratory of Synaptic Immunopathology, Department of Systems Medicine, Tor Vergata University, Rome, Italy.; Furlan R; Neuroimmunology Unit, Division of Neuroscience, Institute of Experimental Neurology, San Raffaele Scientific Institute, Milan, Italy.; Finardi A; Neuroimmunology Unit, Division of Neuroscience, Institute of Experimental Neurology, San Raffaele Scientific Institute, Milan, Italy.; Marfia GA; Laboratory of Synaptic Immunopathology, Department of Systems Medicine, Tor Vergata University, Rome, Italy.; Guadalupi L; Laboratory of Neuroimmunology and Synaptic Plasticity, University & IRCCS San Raffaele, Rome, Italy.; Bullitta S; Laboratory of Synaptic Immunopathology, Department of Systems Medicine, Tor Vergata University, Rome, Italy.; Mandolesi G; Laboratory of Neuroimmunology and Synaptic Plasticity, University & IRCCS San Raffaele, Rome, Italy.; Centonze D; Unit of Neurology and Neurorehabilitation, IRCCS Neuromed, Pozzilli, Italy.; Laboratory of Synaptic Immunopathology, Department of Systems Medicine, Tor Vergata University, Rome, Italy.; Buttari F; Unit of Neurology and Neurorehabilitation, IRCCS Neuromed, Pozzilli, Italy.

Publisher: Frontiers Research Foundation Country of Publication: Switzerland NLM ID: 101546899 Publication Model: eCollection Cited Medium: Print ISSN: 1664-2295 (Print) Linking ISSN: 16642295 NLM ISO Abbreviation: Front Neurol Subsets: PubMed not MEDLINE

Doneddu, Pietro E; Bianchi, Elisa; Cocito, Dario; Manganelli, Fiore; Fazio, Raffaella; Filosto, Massimiliano; Mazzeo, Anna; Cosentino, Giuseppe; Cortese, Andrea; Jann, Stefano; Clerici, Angelo M; Antonini, Giovanni; Siciliano, Gabriele; Luigetti, Marco; Marfia, Girolama A; Briani, Chiara; Lauria, Giuseppe; Rosso, Tiziana; Cavaletti, Guido; Carpo, Marinella; Benedetti, Luana; Beghi, Ettore; Liberatore, Giuseppe; Santoro, Lucio; Peci, Erdita; Tronci, Stefano; Piccinelli, Stefano Cotti; Toscano, Antonio; Piccolo, Laura; Verrengia, Elena P; Leonardi, Luca; Schirinzi, Erika; Mataluni, Giorgia; Ruiz, Marta; Dacci, Patrizia; Nobile-Orazio, Eduardo

Stampanoni Bassi M; Unit of Neurology and Neurorehabilitation, IRCCS Neuromed, Via Atinense 18, 86077, Pozzilli, IS, Italy.; Multiple Sclerosis Research Unit, Department of Systems Medicine, Tor Vergata University, Via Montpellier 1, 00133, Rome, Italy.; Iezzi E; Unit of Neurology and Neurorehabilitation, IRCCS Neuromed, Via Atinense 18, 86077, Pozzilli, IS, Italy.; Landi D; Multiple Sclerosis Research Unit, Department of Systems Medicine, Tor Vergata University, Via Montpellier 1, 00133, Rome, Italy.; Monteleone F; Multiple Sclerosis Research Unit, Department of Systems Medicine, Tor Vergata University, Via Montpellier 1, 00133, Rome, Italy.; Gilio L; Unit of Neurology and Neurorehabilitation, IRCCS Neuromed, Via Atinense 18, 86077, Pozzilli, IS, Italy.; Multiple Sclerosis Research Unit, Department of Systems Medicine, Tor Vergata University, Via Montpellier 1, 00133, Rome, Italy.; Simonelli I; Service of Medical Statistics and Information Technology, Fatebenefratelli Foundation for Health Research and Education, Rome, Italy.; Musella A; Laboratory of Neuroimmunology and Synaptic Plasticity, IRCCS San Raffaele Pisana, Via di Val Cannuta 247, 00163, Rome, Italy.; Mandolesi G; Laboratory of Neuroimmunology and Synaptic Plasticity, IRCCS San Raffaele Pisana, Via di Val Cannuta 247, 00163, Rome, Italy.; De Vito F; Laboratory of Neuroimmunology and Synaptic Plasticity, IRCCS San Raffaele Pisana, Via di Val Cannuta 247, 00163, Rome, Italy.; Furlan R; Neuroimmunology Unit, Division of Neuroscience, Institute of Experimental Neurology (INSpe), San Raffaele Scientific Institute, Milan, Italy.; Finardi A; Neuroimmunology Unit, Division of Neuroscience, Institute of Experimental Neurology (INSpe), San Raffaele Scientific Institute, Milan, Italy.; Marfia GA; Unit of Neurology and Neurorehabilitation, IRCCS Neuromed, Via Atinense 18, 86077, Pozzilli, IS, Italy.; Multiple Sclerosis Research Unit, Department of Systems Medicine, Tor Vergata University, Via Montpellier 1, 00133, Rome, Italy.; Centonze D; Unit of Neurology and Neurorehabilitation, IRCCS Neuromed, Via Atinense 18, 86077, Pozzilli, IS, Italy. centonze@uniroma2.i.; Multiple Sclerosis Research Unit, Department of Systems Medicine, Tor Vergata University, Via Montpellier 1, 00133, Rome, Italy. centonze@uniroma2.i.; Buttari F; Unit of Neurology and Neurorehabilitation, IRCCS Neuromed, Via Atinense 18, 86077, Pozzilli, IS, Italy.

Publisher: Springer-Verlag Country of Publication: Germany NLM ID: 0423161 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1432-1459 (Electronic) Linking ISSN: 03405354 NLM ISO Abbreviation: J Neurol Subsets: MEDLINE

Stampanoni Bassi, Mario; Iezzi, Ennio; Marfia, Girolama A; Simonelli, Ilaria; Musella, Alessandra; Mandolesi, Georgia; Fresegna, Diego; Pasqualetti, Patrizio; Furlan, Roberto; Finardi, Annamaria; Mataluni, Giorgia; Landi, Doriana; Gilio, Luana; Centonze, Diego; Buttari, Fabio

J Neuroinflammation
Journal of Neuroinflammation, Vol 15, Iss 1, Pp 1-9 (2018)

Arends S; Department of Neurology, Erasmus University Medical Center, Rotterdam, the Netherlands; Department of Neurology, Haga Teaching Hospital The Hague, The Hague, the Netherlands. Electronic address: s.arends@erasmusmc.nl.; Drenthen J; Department of Neurology, Erasmus University Medical Center, Rotterdam, the Netherlands. Electronic address: j.drenthen@erasmusmc.nl.; van den Bergh P; Department of Neurology, University Hospital St-Luc, Brussels, Belgium. Electronic address: peter.vandenbergh@uclouvain.be.; Franssen H; Department of Neurology, University Medical Center Utrecht, Utrecht, the Netherlands.; Hadden RDM; Department of Neurology, King's College Hospital, London, United Kingdom. Electronic address: robert.hadden@nhs.net.; Islam B; Laboratory Sciences and Services Division (LSSD), International Centre for Diarrhoeal Disease Research (icddr,b) Dhaka, Bangladesh. Electronic address: badrul.islam@icddrb.org.; Kuwabara S; Department of Neurology, Chiba University Hospital, Chiba, Japan. Electronic address: kuwabara-s@faculty.chiba-u.jp.; Reisin RC; Department of Neurology, Hospital Británico, Buenos Aires, Argentina. Electronic address: rcreisin@intramed.net.; Shahrizaila N; Department of Neurology, University of Malaya, Kuala Lumpur, Malaysia. Electronic address: nortina@um.edu.my.; Amino H; Department of Neurology, Chiba University Hospital, Chiba, Japan.; Antonini G; Department of Neuroscience, Mental Health and Sensory Organs (NESMOS), Sapienza University, Sant'Andrea Hospital, Rome, Italy.; Attarian S; Department Neuromuscular Disorders, Hôpital de La Timone, Marseille, France. Electronic address: shahram.attarian@ap-hm.fr.; Balducci C; Department of Neurology, San Gerardo Hospital, University of Milano-Bicocca, Monza, Italy.; Barroso F; Department of Neurology, Fleni Hospital, Buenos Aires, Argentina. Electronic address: fbarroso@fleni.org.ar.; Bertorini T; Department of Neurology, The University of Tennessee Health Science Center, Memphis, USA. Electronic address: tbertori@uthsc.edu.; Binda D; Department of Neurology, Valduce Hospital, Como, Italy.; Brannagan TH; Department of Neurology, Columbia University, New York City, USA. Electronic address: tb2325@cumc.columbia.edu.; Buermann J; Department of Neurology, University Hospital of Saarland, Homburg, Germany; Department of Neurology, MVZ Pfalzklinikum, Kusel, Germany. Electronic address: jan.buermann@mvz.pfalzklinikum.de.; Casasnovas C; Department of Neurology, Hospital Universitari de Bellvitge-IDIBELL and CIBERER, Barcelona, Spain. Electronic address: carloscasasnovas@bellvitgehospital.cat.; Cavaletti G; Department of Neurology, San Gerardo Hospital, University of Milano-Bicocca, Monza, Italy. Electronic address: guido.cavaletti@unimib.it.; Chao CC; Department of Neurology, National Taiwan University Hospital, Taipei, Taiwan. Electronic address: b1401019@ms17.hinet.net.; Dimachkie MM; Department of Neurology, The University of Kansas Medical Center, Kansas City, USA. Electronic address: mdimachkie@kumc.edu.; Fulgenzi EA; Department of Neurology, Hospital Cesar Milstein, Buenos Aires, Argentina. Electronic address: efulgenzi@intramed.net.; Galassi G; Department of Neurology, University Hospital of Modena, Modena, Italy. Electronic address: giulianagalassi@alice.it.; Gutiérrez Gutiérrez G; Department of Neurology, Hospital Universitario Infanta Sofia, San Sebastian de los Reyes, Spain.; Harbo T; Department of Neurology, Aarhus University Hospital, Aarhus, Denmark. Electronic address: tharbo@dadlnet.dk.; Hartung HP; Department of Neurology, University of Dusseldorf, Dusseldorf, Germany. Electronic address: hans-peter.hartung@uni-duesseldorf.de.; Hsieh ST; Department of Neurology, National Taiwan University Hospital, Taipei, Taiwan. Electronic address: shsieh@ntu.edu.tw.; Kiers L; Clinical Neurophysiology, Department of Neurology, The Royal Melbourne Hospital, Parkville, Australia. Electronic address: lynette.kiers@mh.org.au.; Lehmann HC; Department of Neurology, University Hospital of Cologne, Cologne, Germany. Electronic address: helmar.lehmann@uk-koeln.de.; Manganelli F; Department of Neuroscience, Reproductive Sciences and Odontostomatology, University of Naples 'Federico II', Naples, Italy.; Marfia GA; Department of System Medicine, Dysimmune Neuropathies Unit, Policlinico Tor Vergata, Roma, Italy. Electronic address: marfia@uniroma2.it.; Mataluni G; Department of System Medicine, Dysimmune Neuropathies Unit, Policlinico Tor Vergata, Roma, Italy.; Pardo J; Department of Neurology, Complejo Hospitalario Universitario de Santiago, Santiago de Compostela, Spain. Electronic address: julio.pardo.fernandez@sergas.es.; Péréon Y; Department of Clinical Neurophysiology, Reference Centre for Neuromuscular Disorders AOC, Filnemus, Euro-NMD, University of Nantes, Nantes, France. Electronic address: yann.pereon@univ-nantes.fr.; Rajabally YA; Department of Neurology, Queen Elizabeth Hospital, Birmingham, United Kingdom. Electronic address: y.rajabally@aston.ac.uk.; Santoro L; Department of Neuroscience, Reproductive Sciences and Odontostomatology, University of Naples 'Federico II', Naples, Italy. Electronic address: lusantor@unina.it.; Sekiguchi Y; Department of Neurology, Chiba University Hospital, Chiba, Japan. Electronic address: syukari536@chiba-u.jp.; Stein B; Department of Neurology, St. Joseph's Regional Medical Center, Paterson, USA. Electronic address: steinb@sjhmc.org.; Stettner M; Department of Neurology and Center for Translational Neuro- and Behavioral Sciences (C-TNBS), University Medicine Essen, University of Duisburg-Essen, Essen, Germany. Electronic address: mark.stettner@uk-essen.de.; Uncini A; Department of Neuroscience, Imaging and Clinical Sciences, University 'G. D'Annunzio', Chieti, Italy. Electronic address: uncini@unich.it.; Verboon C; Department of Neurology, Erasmus University Medical Center, Rotterdam, the Netherlands. Electronic address: j.verboon@erasmusmc.nl.; Verhamme C; Department of Neurology, Amsterdam Neuroscience, Amsterdam University Medical Centers, University of Amsterdam, Amsterdam, the Netherlands. Electronic address: c.verhamme@amsterdamumc.nl.; Vytopil M; Department of Neurology, Lahey Hospital and Medical Center, Burlington, MA, USA. Electronic address: michal.vytopil@lahey.org.; Waheed W; Department of Neurology, University of Vermont Medical Centre, Burlington, USA. Electronic address: waqar.waheed@uvmhealth.org.; Wang M; Department of Neurology, Affiliated Hospital of Jining Medical University, Jining, Shandong, China. Electronic address: emgwangmin@126.com.; Zivkovic S; Department of Neurology, University of Pittsburgh Medical Center, Pittsburgh, USA. Electronic address: zivksx@upmc.edu.; Jacobs BC; Department of Neurology, Erasmus University Medical Center, Rotterdam, the Netherlands; Department of Immunology, Erasmus University Medical Center, Rotterdam, the Netherlands. Electronic address: j.drenthen@erasmusmc.nl.; Cornblath DR; Department of Neurology, Johns Hopkins University, Baltimore, MD, USA. Electronic address: dcornbl@jhmi.edu.

Publisher: Elsevier Country of Publication: Netherlands NLM ID: 100883319 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1872-8952 (Electronic) Linking ISSN: 13882457 NLM ISO Abbreviation: Clin Neurophysiol Subsets: MEDLINE

Stampanoni Bassi M; Unit of Neurology & Unit of Neurorehabilitation, IRCCS Istituto Neurologico Mediterraneo Neuromed, Pozzilli, Italy.; Multiple Sclerosis Research Unit, Department of Systems Medicine, Tor Vergata University, Rome, Italy.; Gilio L; Unit of Neurology & Unit of Neurorehabilitation, IRCCS Istituto Neurologico Mediterraneo Neuromed, Pozzilli, Italy.; Multiple Sclerosis Research Unit, Department of Systems Medicine, Tor Vergata University, Rome, Italy.; Buttari F; Unit of Neurology & Unit of Neurorehabilitation, IRCCS Istituto Neurologico Mediterraneo Neuromed, Pozzilli, Italy.; Multiple Sclerosis Research Unit, Department of Systems Medicine, Tor Vergata University, Rome, Italy.; Maffei P; Unit of Neurology & Unit of Neurorehabilitation, IRCCS Istituto Neurologico Mediterraneo Neuromed, Pozzilli, Italy.; Marfia GA; Multiple Sclerosis Research Unit, Department of Systems Medicine, Tor Vergata University, Rome, Italy.; Restivo DA; Department of Neurology, Nuovo Garibaldi Hospital, Catania, Italy.; Centonze D; Unit of Neurology & Unit of Neurorehabilitation, IRCCS Istituto Neurologico Mediterraneo Neuromed, Pozzilli, Italy.; Multiple Sclerosis Research Unit, Department of Systems Medicine, Tor Vergata University, Rome, Italy.; Iezzi E; Unit of Neurology & Unit of Neurorehabilitation, IRCCS Istituto Neurologico Mediterraneo Neuromed, Pozzilli, Italy.

Publisher: Frontiers Research Foundation Country of Publication: Switzerland NLM ID: 101478481 Publication Model: eCollection Cited Medium: Print ISSN: 1662-4548 (Print) Linking ISSN: 1662453X NLM ISO Abbreviation: Front Neurosci Subsets: PubMed not MEDLINE

Doets AY; From the Departments of Neurology (A.Y.D., C.W., B.v.d.B., C.V., J.R., S.E.L., K.K., B.C.J.), Public Health (H.F.L.), and Immunology (B.C.J.), Erasmus MC, University Medical Centre Rotterdam; Department of Neurology (C.W., J.P.A.S.), Maasstad Hospital, Rotterdam, the Netherlands; Laboratory of Gut-Brain Signaling (B.I., N.P., Z.I.), Laboratory Sciences and Services Division, Dhaka, Bangladesh; Department of Neurology (A.D., G. Chavada, H.J.W.), College of Medical, Veterinary and Life Sciences, University of Glasgow, UK; Department of Neurology (Y.Y., S. Kusunoki), Kindai University Faculty of Medicine, Osaka-Sayama City, Osaka, Japan; Department of Neurology (M.M.D.), University of Kansas Medical Center, Kansas City; Department of Neurology (W.W., N.K.), University of Vermont Medical Centre, Burlington; National Institute of Neurosciences and Hospital (Q.D.M.), Agargoan, Bangladesh; Department of Neurology (T.H.), Aarhus University Hospital; Department of Neurology (S.H.S.), Odense University Hospital and University of Southern Denmark, Odense, Denmark; Department of Neurology, Neuromuscular Unit (C.C.), Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Department of Neurology (K.B.), Groote Schuur Hospital, University of Cape Town, South Africa; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle, UK; Department of Neurology (B.v.d.B., C.J.G.), Franciscus Vlietland Hospital, Schiedam, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (S. Kuwabara), Chiba University, Japan; Department of Neurology (P.V.d.B.), Neuromuscular Reference Centre, University Hospital Saint-Luc, University of Louvain, Brussels, Belgium; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Dysimmune Neuropathies Unit, Department of Systems Medicine (G.A.M.), Tor Vergata University Hospital, Rome, Italy; Department of Medicine (N.S.), University of Malaya, Kuala Lumpur; Department of Neurology (G.G.), University Hospital of Modena, Italy; Department of Clinical Neurophysiology, Reference Centre for NMD (Y.P.), CHU Nantes, France; Department of Neurology (J.B.), Saarland University Medical School, Homburg-Saarland (previous affiliation); MVZ Pfalzklinikum (J.B.), Kusel, Germany (current affiliation); Department of Neurology (K.K., R.P.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (C.M.), Hospital Británico, Buenos Aires, Argentina; Department of Neurology (M.J.S.T.), Hospital Marques de Valdecilla, Santander; Department of Neurology (L.Q., I.I.), Hospital de la Santa Creu i Santa Pau, U.A.B. CIBERER and ERN-NMD, Barcelona, Spain; Department of Neurology (Y.W.), Affiliated Hospital of Jining Medical University, Shandong Province, China; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Clinical and Research Institute, Milan University, Rozzano, Italy; Nuffield Department of Clinical Neurosciences (S.R.), University of Oxford and Oxford University Hospitals NHS Foundation Trust, UK; Department of Neurosciences, Ophthalmology, Rehabilitation, Genetics and Maternal Sciences (A.S.), University of Genova; IRCCS San Martino Hospital (A.S.), Genova, Italy; Department of Neurology (J.P.), Hospital Clínico de Santiago, Santiago de Compostela (A Coruña), Spain; Department of Neurology (F.H.V.), Franciscus Vlietland Hospital (location: Franciscus Gasthuis), Rotterdam, the Netherlands; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (V.G.), Montefiore Medical Centre, Bronx, NY; Department of Neurology (G. Cavaletti), University Milano-Bicocca, Monza, Italy; Department of Neurology (G.G.-G.), Hospital Universitario Infanta Sofía, San Sebastián de los Reyes, Spain; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, Buenos Aires, Argentina; Department of Neurology (L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (H.D.K.), University Health Network, University of Toronto, Canada; Department of Neurology (E.D.), University Hospital of Larissa, Greece; Department of Neurology, Reference Centre for NMD (S.A.), CHU Timone, Marseille, France; Department of Neurology (A.J.v.d.K., F.E.), Amsterdam University Medical Centre, University of Amsterdam, Neuroscience Institute, Netherlands Neuromuscular Centre, Euro-NMD; Department of Neurology (P.W.W.), Haga Hospital, Den Haag; Department of Neurology (H.J.G.), Reinier de Graaf Hospital, Delft, the Netherlands; Department of Neurology (R.D.M.H.), King's College Hospital, London; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, UK; Department of Neurology (K.A.S.), University of Texas Health Science Centre at Houston; Department of Neurology (S. Karafiath), University of Utah School of Medicine, Salt Lake City; Department of Neurology (M.V.), Lahey Hospital and Medical Center, Tufts University School of Medicine, Burlington, MA; Department of Neurology (G.A.), Mental Health and Sensory Organs (NESMOS), University of Rome 'Sapienza,' Sant'Andrea Hospital, Rome, Italy; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Canada; Department of Neurology (C.G.F.), Maastricht University Medical Centre, the Netherlands; Department of Neurology (M.B.), Leeds Teaching Hospitals; Department of Neurology (R.C.R.), Addenbrooke's Hospital, Cambridge, UK; Department of Neurology (N.J.S.), University at Buffalo Jacobs School of Medicine and Biomedical Sciences, NY; Department of Neurology (R.F.), Scientific Institute San Raffaele, Milan, Italy; Department of Neurology (G.W.v.D.), Canisius Wilhelmina Hospital, Nijmegen; Department of Neurology (M.P.J.G.), Jeroen Bosch Hospital, 's-Hertogenbosch; Department of Neurology (C.S.M.S.), Leiden University Medical Centre, the Netherlands; and Department of Neurology (K.C.G.), St. Elizabeth's Medical Centre, Tufts University, School of Medicine, Boston, MA.; Lingsma HF; From the Departments of Neurology (A.Y.D., C.W., B.v.d.B., C.V., J.R., S.E.L., K.K., B.C.J.), Public Health (H.F.L.), and Immunology (B.C.J.), Erasmus MC, University Medical Centre Rotterdam; Department of Neurology (C.W., J.P.A.S.), Maasstad Hospital, Rotterdam, the Netherlands; Laboratory of Gut-Brain Signaling (B.I., N.P., Z.I.), Laboratory Sciences and Services Division, Dhaka, Bangladesh; Department of Neurology (A.D., G. Chavada, H.J.W.), College of Medical, Veterinary and Life Sciences, University of Glasgow, UK; Department of Neurology (Y.Y., S. Kusunoki), Kindai University Faculty of Medicine, Osaka-Sayama City, Osaka, Japan; Department of Neurology (M.M.D.), University of Kansas Medical Center, Kansas City; Department of Neurology (W.W., N.K.), University of Vermont Medical Centre, Burlington; National Institute of Neurosciences and Hospital (Q.D.M.), Agargoan, Bangladesh; Department of Neurology (T.H.), Aarhus University Hospital; Department of Neurology (S.H.S.), Odense University Hospital and University of Southern Denmark, Odense, Denmark; Department of Neurology, Neuromuscular Unit (C.C.), Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Department of Neurology (K.B.), Groote Schuur Hospital, University of Cape Town, South Africa; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle, UK; Department of Neurology (B.v.d.B., C.J.G.), Franciscus Vlietland Hospital, Schiedam, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (S. Kuwabara), Chiba University, Japan; Department of Neurology (P.V.d.B.), Neuromuscular Reference Centre, University Hospital Saint-Luc, University of Louvain, Brussels, Belgium; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Dysimmune Neuropathies Unit, Department of Systems Medicine (G.A.M.), Tor Vergata University Hospital, Rome, Italy; Department of Medicine (N.S.), University of Malaya, Kuala Lumpur; Department of Neurology (G.G.), University Hospital of Modena, Italy; Department of Clinical Neurophysiology, Reference Centre for NMD (Y.P.), CHU Nantes, France; Department of Neurology (J.B.), Saarland University Medical School, Homburg-Saarland (previous affiliation); MVZ Pfalzklinikum (J.B.), Kusel, Germany (current affiliation); Department of Neurology (K.K., R.P.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (C.M.), Hospital Británico, Buenos Aires, Argentina; Department of Neurology (M.J.S.T.), Hospital Marques de Valdecilla, Santander; Department of Neurology (L.Q., I.I.), Hospital de la Santa Creu i Santa Pau, U.A.B. CIBERER and ERN-NMD, Barcelona, Spain; Department of Neurology (Y.W.), Affiliated Hospital of Jining Medical University, Shandong Province, China; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Clinical and Research Institute, Milan University, Rozzano, Italy; Nuffield Department of Clinical Neurosciences (S.R.), University of Oxford and Oxford University Hospitals NHS Foundation Trust, UK; Department of Neurosciences, Ophthalmology, Rehabilitation, Genetics and Maternal Sciences (A.S.), University of Genova; IRCCS San Martino Hospital (A.S.), Genova, Italy; Department of Neurology (J.P.), Hospital Clínico de Santiago, Santiago de Compostela (A Coruña), Spain; Department of Neurology (F.H.V.), Franciscus Vlietland Hospital (location: Franciscus Gasthuis), Rotterdam, the Netherlands; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (V.G.), Montefiore Medical Centre, Bronx, NY; Department of Neurology (G. Cavaletti), University Milano-Bicocca, Monza, Italy; Department of Neurology (G.G.-G.), Hospital Universitario Infanta Sofía, San Sebastián de los Reyes, Spain; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, Buenos Aires, Argentina; Department of Neurology (L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (H.D.K.), University Health Network, University of Toronto, Canada; Department of Neurology (E.D.), University Hospital of Larissa, Greece; Department of Neurology, Reference Centre for NMD (S.A.), CHU Timone, Marseille, France; Department of Neurology (A.J.v.d.K., F.E.), Amsterdam University Medical Centre, University of Amsterdam, Neuroscience Institute, Netherlands Neuromuscular Centre, Euro-NMD; Department of Neurology (P.W.W.), Haga Hospital, Den Haag; Department of Neurology (H.J.G.), Reinier de Graaf Hospital, Delft, the Netherlands; Department of Neurology (R.D.M.H.), King's College Hospital, London; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, UK; Department of Neurology (K.A.S.), University of Texas Health Science Centre at Houston; Department of Neurology (S. Karafiath), University of Utah School of Medicine, Salt Lake City; Department of Neurology (M.V.), Lahey Hospital and Medical Center, Tufts University School of Medicine, Burlington, MA; Department of Neurology (G.A.), Mental Health and Sensory Organs (NESMOS), University of Rome 'Sapienza,' Sant'Andrea Hospital, Rome, Italy; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Canada; Department of Neurology (C.G.F.), Maastricht University Medical Centre, the Netherlands; Department of Neurology (M.B.), Leeds Teaching Hospitals; Department of Neurology (R.C.R.), Addenbrooke's Hospital, Cambridge, UK; Department of Neurology (N.J.S.), University at Buffalo Jacobs School of Medicine and Biomedical Sciences, NY; Department of Neurology (R.F.), Scientific Institute San Raffaele, Milan, Italy; Department of Neurology (G.W.v.D.), Canisius Wilhelmina Hospital, Nijmegen; Department of Neurology (M.P.J.G.), Jeroen Bosch Hospital, 's-Hertogenbosch; Department of Neurology (C.S.M.S.), Leiden University Medical Centre, the Netherlands; and Department of Neurology (K.C.G.), St. Elizabeth's Medical Centre, Tufts University, School of Medicine, Boston, MA.; Walgaard C; From the Departments of Neurology (A.Y.D., C.W., B.v.d.B., C.V., J.R., S.E.L., K.K., B.C.J.), Public Health (H.F.L.), and Immunology (B.C.J.), Erasmus MC, University Medical Centre Rotterdam; Department of Neurology (C.W., J.P.A.S.), Maasstad Hospital, Rotterdam, the Netherlands; Laboratory of Gut-Brain Signaling (B.I., N.P., Z.I.), Laboratory Sciences and Services Division, Dhaka, Bangladesh; Department of Neurology (A.D., G. Chavada, H.J.W.), College of Medical, Veterinary and Life Sciences, University of Glasgow, UK; Department of Neurology (Y.Y., S. Kusunoki), Kindai University Faculty of Medicine, Osaka-Sayama City, Osaka, Japan; Department of Neurology (M.M.D.), University of Kansas Medical Center, Kansas City; Department of Neurology (W.W., N.K.), University of Vermont Medical Centre, Burlington; National Institute of Neurosciences and Hospital (Q.D.M.), Agargoan, Bangladesh; Department of Neurology (T.H.), Aarhus University Hospital; Department of Neurology (S.H.S.), Odense University Hospital and University of Southern Denmark, Odense, Denmark; Department of Neurology, Neuromuscular Unit (C.C.), Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Department of Neurology (K.B.), Groote Schuur Hospital, University of Cape Town, South Africa; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle, UK; Department of Neurology (B.v.d.B., C.J.G.), Franciscus Vlietland Hospital, Schiedam, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (S. Kuwabara), Chiba University, Japan; Department of Neurology (P.V.d.B.), Neuromuscular Reference Centre, University Hospital Saint-Luc, University of Louvain, Brussels, Belgium; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Dysimmune Neuropathies Unit, Department of Systems Medicine (G.A.M.), Tor Vergata University Hospital, Rome, Italy; Department of Medicine (N.S.), University of Malaya, Kuala Lumpur; Department of Neurology (G.G.), University Hospital of Modena, Italy; Department of Clinical Neurophysiology, Reference Centre for NMD (Y.P.), CHU Nantes, France; Department of Neurology (J.B.), Saarland University Medical School, Homburg-Saarland (previous affiliation); MVZ Pfalzklinikum (J.B.), Kusel, Germany (current affiliation); Department of Neurology (K.K., R.P.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (C.M.), Hospital Británico, Buenos Aires, Argentina; Department of Neurology (M.J.S.T.), Hospital Marques de Valdecilla, Santander; Department of Neurology (L.Q., I.I.), Hospital de la Santa Creu i Santa Pau, U.A.B. CIBERER and ERN-NMD, Barcelona, Spain; Department of Neurology (Y.W.), Affiliated Hospital of Jining Medical University, Shandong Province, China; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Clinical and Research Institute, Milan University, Rozzano, Italy; Nuffield Department of Clinical Neurosciences (S.R.), University of Oxford and Oxford University Hospitals NHS Foundation Trust, UK; Department of Neurosciences, Ophthalmology, Rehabilitation, Genetics and Maternal Sciences (A.S.), University of Genova; IRCCS San Martino Hospital (A.S.), Genova, Italy; Department of Neurology (J.P.), Hospital Clínico de Santiago, Santiago de Compostela (A Coruña), Spain; Department of Neurology (F.H.V.), Franciscus Vlietland Hospital (location: Franciscus Gasthuis), Rotterdam, the Netherlands; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (V.G.), Montefiore Medical Centre, Bronx, NY; Department of Neurology (G. Cavaletti), University Milano-Bicocca, Monza, Italy; Department of Neurology (G.G.-G.), Hospital Universitario Infanta Sofía, San Sebastián de los Reyes, Spain; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, Buenos Aires, Argentina; Department of Neurology (L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (H.D.K.), University Health Network, University of Toronto, Canada; Department of Neurology (E.D.), University Hospital of Larissa, Greece; Department of Neurology, Reference Centre for NMD (S.A.), CHU Timone, Marseille, France; Department of Neurology (A.J.v.d.K., F.E.), Amsterdam University Medical Centre, University of Amsterdam, Neuroscience Institute, Netherlands Neuromuscular Centre, Euro-NMD; Department of Neurology (P.W.W.), Haga Hospital, Den Haag; Department of Neurology (H.J.G.), Reinier de Graaf Hospital, Delft, the Netherlands; Department of Neurology (R.D.M.H.), King's College Hospital, London; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, UK; Department of Neurology (K.A.S.), University of Texas Health Science Centre at Houston; Department of Neurology (S. Karafiath), University of Utah School of Medicine, Salt Lake City; Department of Neurology (M.V.), Lahey Hospital and Medical Center, Tufts University School of Medicine, Burlington, MA; Department of Neurology (G.A.), Mental Health and Sensory Organs (NESMOS), University of Rome 'Sapienza,' Sant'Andrea Hospital, Rome, Italy; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Canada; Department of Neurology (C.G.F.), Maastricht University Medical Centre, the Netherlands; Department of Neurology (M.B.), Leeds Teaching Hospitals; Department of Neurology (R.C.R.), Addenbrooke's Hospital, Cambridge, UK; Department of Neurology (N.J.S.), University at Buffalo Jacobs School of Medicine and Biomedical Sciences, NY; Department of Neurology (R.F.), Scientific Institute San Raffaele, Milan, Italy; Department of Neurology (G.W.v.D.), Canisius Wilhelmina Hospital, Nijmegen; Department of Neurology (M.P.J.G.), Jeroen Bosch Hospital, 's-Hertogenbosch; Department of Neurology (C.S.M.S.), Leiden University Medical Centre, the Netherlands; and Department of Neurology (K.C.G.), St. Elizabeth's Medical Centre, Tufts University, School of Medicine, Boston, MA.; Islam B; From the Departments of Neurology (A.Y.D., C.W., B.v.d.B., C.V., J.R., S.E.L., K.K., B.C.J.), Public Health (H.F.L.), and Immunology (B.C.J.), Erasmus MC, University Medical Centre Rotterdam; Department of Neurology (C.W., J.P.A.S.), Maasstad Hospital, Rotterdam, the Netherlands; Laboratory of Gut-Brain Signaling (B.I., N.P., Z.I.), Laboratory Sciences and Services Division, Dhaka, Bangladesh; Department of Neurology (A.D., G. Chavada, H.J.W.), College of Medical, Veterinary and Life Sciences, University of Glasgow, UK; Department of Neurology (Y.Y., S. Kusunoki), Kindai University Faculty of Medicine, Osaka-Sayama City, Osaka, Japan; Department of Neurology (M.M.D.), University of Kansas Medical Center, Kansas City; Department of Neurology (W.W., N.K.), University of Vermont Medical Centre, Burlington; National Institute of Neurosciences and Hospital (Q.D.M.), Agargoan, Bangladesh; Department of Neurology (T.H.), Aarhus University Hospital; Department of Neurology (S.H.S.), Odense University Hospital and University of Southern Denmark, Odense, Denmark; Department of Neurology, Neuromuscular Unit (C.C.), Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Department of Neurology (K.B.), Groote Schuur Hospital, University of Cape Town, South Africa; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle, UK; Department of Neurology (B.v.d.B., C.J.G.), Franciscus Vlietland Hospital, Schiedam, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (S. Kuwabara), Chiba University, Japan; Department of Neurology (P.V.d.B.), Neuromuscular Reference Centre, University Hospital Saint-Luc, University of Louvain, Brussels, Belgium; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Dysimmune Neuropathies Unit, Department of Systems Medicine (G.A.M.), Tor Vergata University Hospital, Rome, Italy; Department of Medicine (N.S.), University of Malaya, Kuala Lumpur; Department of Neurology (G.G.), University Hospital of Modena, Italy; Department of Clinical Neurophysiology, Reference Centre for NMD (Y.P.), CHU Nantes, France; Department of Neurology (J.B.), Saarland University Medical School, Homburg-Saarland (previous affiliation); MVZ Pfalzklinikum (J.B.), Kusel, Germany (current affiliation); Department of Neurology (K.K., R.P.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (C.M.), Hospital Británico, Buenos Aires, Argentina; Department of Neurology (M.J.S.T.), Hospital Marques de Valdecilla, Santander; Department of Neurology (L.Q., I.I.), Hospital de la Santa Creu i Santa Pau, U.A.B. CIBERER and ERN-NMD, Barcelona, Spain; Department of Neurology (Y.W.), Affiliated Hospital of Jining Medical University, Shandong Province, China; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Clinical and Research Institute, Milan University, Rozzano, Italy; Nuffield Department of Clinical Neurosciences (S.R.), University of Oxford and Oxford University Hospitals NHS Foundation Trust, UK; Department of Neurosciences, Ophthalmology, Rehabilitation, Genetics and Maternal Sciences (A.S.), University of Genova; IRCCS San Martino Hospital (A.S.), Genova, Italy; Department of Neurology (J.P.), Hospital Clínico de Santiago, Santiago de Compostela (A Coruña), Spain; Department of Neurology (F.H.V.), Franciscus Vlietland Hospital (location: Franciscus Gasthuis), Rotterdam, the Netherlands; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (V.G.), Montefiore Medical Centre, Bronx, NY; Department of Neurology (G. Cavaletti), University Milano-Bicocca, Monza, Italy; Department of Neurology (G.G.-G.), Hospital Universitario Infanta Sofía, San Sebastián de los Reyes, Spain; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, Buenos Aires, Argentina; Department of Neurology (L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (H.D.K.), University Health Network, University of Toronto, Canada; Department of Neurology (E.D.), University Hospital of Larissa, Greece; Department of Neurology, Reference Centre for NMD (S.A.), CHU Timone, Marseille, France; Department of Neurology (A.J.v.d.K., F.E.), Amsterdam University Medical Centre, University of Amsterdam, Neuroscience Institute, Netherlands Neuromuscular Centre, Euro-NMD; Department of Neurology (P.W.W.), Haga Hospital, Den Haag; Department of Neurology (H.J.G.), Reinier de Graaf Hospital, Delft, the Netherlands; Department of Neurology (R.D.M.H.), King's College Hospital, London; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, UK; Department of Neurology (K.A.S.), University of Texas Health Science Centre at Houston; Department of Neurology (S. Karafiath), University of Utah School of Medicine, Salt Lake City; Department of Neurology (M.V.), Lahey Hospital and Medical Center, Tufts University School of Medicine, Burlington, MA; Department of Neurology (G.A.), Mental Health and Sensory Organs (NESMOS), University of Rome 'Sapienza,' Sant'Andrea Hospital, Rome, Italy; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Canada; Department of Neurology (C.G.F.), Maastricht University Medical Centre, the Netherlands; Department of Neurology (M.B.), Leeds Teaching Hospitals; Department of Neurology (R.C.R.), Addenbrooke's Hospital, Cambridge, UK; Department of Neurology (N.J.S.), University at Buffalo Jacobs School of Medicine and Biomedical Sciences, NY; Department of Neurology (R.F.), Scientific Institute San Raffaele, Milan, Italy; Department of Neurology (G.W.v.D.), Canisius Wilhelmina Hospital, Nijmegen; Department of Neurology (M.P.J.G.), Jeroen Bosch Hospital, 's-Hertogenbosch; Department of Neurology (C.S.M.S.), Leiden University Medical Centre, the Netherlands; and Department of Neurology (K.C.G.), St. Elizabeth's Medical Centre, Tufts University, School of Medicine, Boston, MA.; Papri N; From the Departments of Neurology (A.Y.D., C.W., B.v.d.B., C.V., J.R., S.E.L., K.K., B.C.J.), Public Health (H.F.L.), and Immunology (B.C.J.), Erasmus MC, University Medical Centre Rotterdam; Department of Neurology (C.W., J.P.A.S.), Maasstad Hospital, Rotterdam, the Netherlands; Laboratory of Gut-Brain Signaling (B.I., N.P., Z.I.), Laboratory Sciences and Services Division, Dhaka, Bangladesh; Department of Neurology (A.D., G. Chavada, H.J.W.), College of Medical, Veterinary and Life Sciences, University of Glasgow, UK; Department of Neurology (Y.Y., S. Kusunoki), Kindai University Faculty of Medicine, Osaka-Sayama City, Osaka, Japan; Department of Neurology (M.M.D.), University of Kansas Medical Center, Kansas City; Department of Neurology (W.W., N.K.), University of Vermont Medical Centre, Burlington; National Institute of Neurosciences and Hospital (Q.D.M.), Agargoan, Bangladesh; Department of Neurology (T.H.), Aarhus University Hospital; Department of Neurology (S.H.S.), Odense University Hospital and University of Southern Denmark, Odense, Denmark; Department of Neurology, Neuromuscular Unit (C.C.), Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Department of Neurology (K.B.), Groote Schuur Hospital, University of Cape Town, South Africa; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle, UK; Department of Neurology (B.v.d.B., C.J.G.), Franciscus Vlietland Hospital, Schiedam, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (S. Kuwabara), Chiba University, Japan; Department of Neurology (P.V.d.B.), Neuromuscular Reference Centre, University Hospital Saint-Luc, University of Louvain, Brussels, Belgium; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Dysimmune Neuropathies Unit, Department of Systems Medicine (G.A.M.), Tor Vergata University Hospital, Rome, Italy; Department of Medicine (N.S.), University of Malaya, Kuala Lumpur; Department of Neurology (G.G.), University Hospital of Modena, Italy; Department of Clinical Neurophysiology, Reference Centre for NMD (Y.P.), CHU Nantes, France; Department of Neurology (J.B.), Saarland University Medical School, Homburg-Saarland (previous affiliation); MVZ Pfalzklinikum (J.B.), Kusel, Germany (current affiliation); Department of Neurology (K.K., R.P.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (C.M.), Hospital Británico, Buenos Aires, Argentina; Department of Neurology (M.J.S.T.), Hospital Marques de Valdecilla, Santander; Department of Neurology (L.Q., I.I.), Hospital de la Santa Creu i Santa Pau, U.A.B. CIBERER and ERN-NMD, Barcelona, Spain; Department of Neurology (Y.W.), Affiliated Hospital of Jining Medical University, Shandong Province, China; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Clinical and Research Institute, Milan University, Rozzano, Italy; Nuffield Department of Clinical Neurosciences (S.R.), University of Oxford and Oxford University Hospitals NHS Foundation Trust, UK; Department of Neurosciences, Ophthalmology, Rehabilitation, Genetics and Maternal Sciences (A.S.), University of Genova; IRCCS San Martino Hospital (A.S.), Genova, Italy; Department of Neurology (J.P.), Hospital Clínico de Santiago, Santiago de Compostela (A Coruña), Spain; Department of Neurology (F.H.V.), Franciscus Vlietland Hospital (location: Franciscus Gasthuis), Rotterdam, the Netherlands; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (V.G.), Montefiore Medical Centre, Bronx, NY; Department of Neurology (G. Cavaletti), University Milano-Bicocca, Monza, Italy; Department of Neurology (G.G.-G.), Hospital Universitario Infanta Sofía, San Sebastián de los Reyes, Spain; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, Buenos Aires, Argentina; Department of Neurology (L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (H.D.K.), University Health Network, University of Toronto, Canada; Department of Neurology (E.D.), University Hospital of Larissa, Greece; Department of Neurology, Reference Centre for NMD (S.A.), CHU Timone, Marseille, France; Department of Neurology (A.J.v.d.K., F.E.), Amsterdam University Medical Centre, University of Amsterdam, Neuroscience Institute, Netherlands Neuromuscular Centre, Euro-NMD; Department of Neurology (P.W.W.), Haga Hospital, Den Haag; Department of Neurology (H.J.G.), Reinier de Graaf Hospital, Delft, the Netherlands; Department of Neurology (R.D.M.H.), King's College Hospital, London; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, UK; Department of Neurology (K.A.S.), University of Texas Health Science Centre at Houston; Department of Neurology (S. Karafiath), University of Utah School of Medicine, Salt Lake City; Department of Neurology (M.V.), Lahey Hospital and Medical Center, Tufts University School of Medicine, Burlington, MA; Department of Neurology (G.A.), Mental Health and Sensory Organs (NESMOS), University of Rome 'Sapienza,' Sant'Andrea Hospital, Rome, Italy; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Canada; Department of Neurology (C.G.F.), Maastricht University Medical Centre, the Netherlands; Department of Neurology (M.B.), Leeds Teaching Hospitals; Department of Neurology (R.C.R.), Addenbrooke's Hospital, Cambridge, UK; Department of Neurology (N.J.S.), University at Buffalo Jacobs School of Medicine and Biomedical Sciences, NY; Department of Neurology (R.F.), Scientific Institute San Raffaele, Milan, Italy; Department of Neurology (G.W.v.D.), Canisius Wilhelmina Hospital, Nijmegen; Department of Neurology (M.P.J.G.), Jeroen Bosch Hospital, 's-Hertogenbosch; Department of Neurology (C.S.M.S.), Leiden University Medical Centre, the Netherlands; and Department of Neurology (K.C.G.), St. Elizabeth's Medical Centre, Tufts University, School of Medicine, Boston, MA.; Davidson A; From the Departments of Neurology (A.Y.D., C.W., B.v.d.B., C.V., J.R., S.E.L., K.K., B.C.J.), Public Health (H.F.L.), and Immunology (B.C.J.), Erasmus MC, University Medical Centre Rotterdam; Department of Neurology (C.W., J.P.A.S.), Maasstad Hospital, Rotterdam, the Netherlands; Laboratory of Gut-Brain Signaling (B.I., N.P., Z.I.), Laboratory Sciences and Services Division, Dhaka, Bangladesh; Department of Neurology (A.D., G. Chavada, H.J.W.), College of Medical, Veterinary and Life Sciences, University of Glasgow, UK; Department of Neurology (Y.Y., S. Kusunoki), Kindai University Faculty of Medicine, Osaka-Sayama City, Osaka, Japan; Department of Neurology (M.M.D.), University of Kansas Medical Center, Kansas City; Department of Neurology (W.W., N.K.), University of Vermont Medical Centre, Burlington; National Institute of Neurosciences and Hospital (Q.D.M.), Agargoan, Bangladesh; Department of Neurology (T.H.), Aarhus University Hospital; Department of Neurology (S.H.S.), Odense University Hospital and University of Southern Denmark, Odense, Denmark; Department of Neurology, Neuromuscular Unit (C.C.), Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Department of Neurology (K.B.), Groote Schuur Hospital, University of Cape Town, South Africa; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle, UK; Department of Neurology (B.v.d.B., C.J.G.), Franciscus Vlietland Hospital, Schiedam, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (S. Kuwabara), Chiba University, Japan; Department of Neurology (P.V.d.B.), Neuromuscular Reference Centre, University Hospital Saint-Luc, University of Louvain, Brussels, Belgium; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Dysimmune Neuropathies Unit, Department of Systems Medicine (G.A.M.), Tor Vergata University Hospital, Rome, Italy; Department of Medicine (N.S.), University of Malaya, Kuala Lumpur; Department of Neurology (G.G.), University Hospital of Modena, Italy; Department of Clinical Neurophysiology, Reference Centre for NMD (Y.P.), CHU Nantes, France; Department of Neurology (J.B.), Saarland University Medical School, Homburg-Saarland (previous affiliation); MVZ Pfalzklinikum (J.B.), Kusel, Germany (current affiliation); Department of Neurology (K.K., R.P.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (C.M.), Hospital Británico, Buenos Aires, Argentina; Department of Neurology (M.J.S.T.), Hospital Marques de Valdecilla, Santander; Department of Neurology (L.Q., I.I.), Hospital de la Santa Creu i Santa Pau, U.A.B. CIBERER and ERN-NMD, Barcelona, Spain; Department of Neurology (Y.W.), Affiliated Hospital of Jining Medical University, Shandong Province, China; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Clinical and Research Institute, Milan University, Rozzano, Italy; Nuffield Department of Clinical Neurosciences (S.R.), University of Oxford and Oxford University Hospitals NHS Foundation Trust, UK; Department of Neurosciences, Ophthalmology, Rehabilitation, Genetics and Maternal Sciences (A.S.), University of Genova; IRCCS San Martino Hospital (A.S.), Genova, Italy; Department of Neurology (J.P.), Hospital Clínico de Santiago, Santiago de Compostela (A Coruña), Spain; Department of Neurology (F.H.V.), Franciscus Vlietland Hospital (location: Franciscus Gasthuis), Rotterdam, the Netherlands; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (V.G.), Montefiore Medical Centre, Bronx, NY; Department of Neurology (G. Cavaletti), University Milano-Bicocca, Monza, Italy; Department of Neurology (G.G.-G.), Hospital Universitario Infanta Sofía, San Sebastián de los Reyes, Spain; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, Buenos Aires, Argentina; Department of Neurology (L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (H.D.K.), University Health Network, University of Toronto, Canada; Department of Neurology (E.D.), University Hospital of Larissa, Greece; Department of Neurology, Reference Centre for NMD (S.A.), CHU Timone, Marseille, France; Department of Neurology (A.J.v.d.K., F.E.), Amsterdam University Medical Centre, University of Amsterdam, Neuroscience Institute, Netherlands Neuromuscular Centre, Euro-NMD; Department of Neurology (P.W.W.), Haga Hospital, Den Haag; Department of Neurology (H.J.G.), Reinier de Graaf Hospital, Delft, the Netherlands; Department of Neurology (R.D.M.H.), King's College Hospital, London; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, UK; Department of Neurology (K.A.S.), University of Texas Health Science Centre at Houston; Department of Neurology (S. Karafiath), University of Utah School of Medicine, Salt Lake City; Department of Neurology (M.V.), Lahey Hospital and Medical Center, Tufts University School of Medicine, Burlington, MA; Department of Neurology (G.A.), Mental Health and Sensory Organs (NESMOS), University of Rome 'Sapienza,' Sant'Andrea Hospital, Rome, Italy; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Canada; Department of Neurology (C.G.F.), Maastricht University Medical Centre, the Netherlands; Department of Neurology (M.B.), Leeds Teaching Hospitals; Department of Neurology (R.C.R.), Addenbrooke's Hospital, Cambridge, UK; Department of Neurology (N.J.S.), University at Buffalo Jacobs School of Medicine and Biomedical Sciences, NY; Department of Neurology (R.F.), Scientific Institute San Raffaele, Milan, Italy; Department of Neurology (G.W.v.D.), Canisius Wilhelmina Hospital, Nijmegen; Department of Neurology (M.P.J.G.), Jeroen Bosch Hospital, 's-Hertogenbosch; Department of Neurology (C.S.M.S.), Leiden University Medical Centre, the Netherlands; and Department of Neurology (K.C.G.), St. Elizabeth's Medical Centre, Tufts University, School of Medicine, Boston, MA.; Yamagishi Y; From the Departments of Neurology (A.Y.D., C.W., B.v.d.B., C.V., J.R., S.E.L., K.K., B.C.J.), Public Health (H.F.L.), and Immunology (B.C.J.), Erasmus MC, University Medical Centre Rotterdam; Department of Neurology (C.W., J.P.A.S.), Maasstad Hospital, Rotterdam, the Netherlands; Laboratory of Gut-Brain Signaling (B.I., N.P., Z.I.), Laboratory Sciences and Services Division, Dhaka, Bangladesh; Department of Neurology (A.D., G. Chavada, H.J.W.), College of Medical, Veterinary and Life Sciences, University of Glasgow, UK; Department of Neurology (Y.Y., S. Kusunoki), Kindai University Faculty of Medicine, Osaka-Sayama City, Osaka, Japan; Department of Neurology (M.M.D.), University of Kansas Medical Center, Kansas City; Department of Neurology (W.W., N.K.), University of Vermont Medical Centre, Burlington; National Institute of Neurosciences and Hospital (Q.D.M.), Agargoan, Bangladesh; Department of Neurology (T.H.), Aarhus University Hospital; Department of Neurology (S.H.S.), Odense University Hospital and University of Southern Denmark, Odense, Denmark; Department of Neurology, Neuromuscular Unit (C.C.), Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Department of Neurology (K.B.), Groote Schuur Hospital, University of Cape Town, South Africa; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle, UK; Department of Neurology (B.v.d.B., C.J.G.), Franciscus Vlietland Hospital, Schiedam, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (S. Kuwabara), Chiba University, Japan; Department of Neurology (P.V.d.B.), Neuromuscular Reference Centre, University Hospital Saint-Luc, University of Louvain, Brussels, Belgium; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Dysimmune Neuropathies Unit, Department of Systems Medicine (G.A.M.), Tor Vergata University Hospital, Rome, Italy; Department of Medicine (N.S.), University of Malaya, Kuala Lumpur; Department of Neurology (G.G.), University Hospital of Modena, Italy; Department of Clinical Neurophysiology, Reference Centre for NMD (Y.P.), CHU Nantes, France; Department of Neurology (J.B.), Saarland University Medical School, Homburg-Saarland (previous affiliation); MVZ Pfalzklinikum (J.B.), Kusel, Germany (current affiliation); Department of Neurology (K.K., R.P.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (C.M.), Hospital Británico, Buenos Aires, Argentina; Department of Neurology (M.J.S.T.), Hospital Marques de Valdecilla, Santander; Department of Neurology (L.Q., I.I.), Hospital de la Santa Creu i Santa Pau, U.A.B. CIBERER and ERN-NMD, Barcelona, Spain; Department of Neurology (Y.W.), Affiliated Hospital of Jining Medical University, Shandong Province, China; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Clinical and Research Institute, Milan University, Rozzano, Italy; Nuffield Department of Clinical Neurosciences (S.R.), University of Oxford and Oxford University Hospitals NHS Foundation Trust, UK; Department of Neurosciences, Ophthalmology, Rehabilitation, Genetics and Maternal Sciences (A.S.), University of Genova; IRCCS San Martino Hospital (A.S.), Genova, Italy; Department of Neurology (J.P.), Hospital Clínico de Santiago, Santiago de Compostela (A Coruña), Spain; Department of Neurology (F.H.V.), Franciscus Vlietland Hospital (location: Franciscus Gasthuis), Rotterdam, the Netherlands; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (V.G.), Montefiore Medical Centre, Bronx, NY; Department of Neurology (G. Cavaletti), University Milano-Bicocca, Monza, Italy; Department of Neurology (G.G.-G.), Hospital Universitario Infanta Sofía, San Sebastián de los Reyes, Spain; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, Buenos Aires, Argentina; Department of Neurology (L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (H.D.K.), University Health Network, University of Toronto, Canada; Department of Neurology (E.D.), University Hospital of Larissa, Greece; Department of Neurology, Reference Centre for NMD (S.A.), CHU Timone, Marseille, France; Department of Neurology (A.J.v.d.K., F.E.), Amsterdam University Medical Centre, University of Amsterdam, Neuroscience Institute, Netherlands Neuromuscular Centre, Euro-NMD; Department of Neurology (P.W.W.), Haga Hospital, Den Haag; Department of Neurology (H.J.G.), Reinier de Graaf Hospital, Delft, the Netherlands; Department of Neurology (R.D.M.H.), King's College Hospital, London; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, UK; Department of Neurology (K.A.S.), University of Texas Health Science Centre at Houston; Department of Neurology (S. Karafiath), University of Utah School of Medicine, Salt Lake City; Department of Neurology (M.V.), Lahey Hospital and Medical Center, Tufts University School of Medicine, Burlington, MA; Department of Neurology (G.A.), Mental Health and Sensory Organs (NESMOS), University of Rome 'Sapienza,' Sant'Andrea Hospital, Rome, Italy; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Canada; Department of Neurology (C.G.F.), Maastricht University Medical Centre, the Netherlands; Department of Neurology (M.B.), Leeds Teaching Hospitals; Department of Neurology (R.C.R.), Addenbrooke's Hospital, Cambridge, UK; Department of Neurology (N.J.S.), University at Buffalo Jacobs School of Medicine and Biomedical Sciences, NY; Department of Neurology (R.F.), Scientific Institute San Raffaele, Milan, Italy; Department of Neurology (G.W.v.D.), Canisius Wilhelmina Hospital, Nijmegen; Department of Neurology (M.P.J.G.), Jeroen Bosch Hospital, 's-Hertogenbosch; Department of Neurology (C.S.M.S.), Leiden University Medical Centre, the Netherlands; and Department of Neurology (K.C.G.), St. Elizabeth's Medical Centre, Tufts University, School of Medicine, Boston, MA.; Kusunoki S; From the Departments of Neurology (A.Y.D., C.W., B.v.d.B., C.V., J.R., S.E.L., K.K., B.C.J.), Public Health (H.F.L.), and Immunology (B.C.J.), Erasmus MC, University Medical Centre Rotterdam; Department of Neurology (C.W., J.P.A.S.), Maasstad Hospital, Rotterdam, the Netherlands; Laboratory of Gut-Brain Signaling (B.I., N.P., Z.I.), Laboratory Sciences and Services Division, Dhaka, Bangladesh; Department of Neurology (A.D., G. Chavada, H.J.W.), College of Medical, Veterinary and Life Sciences, University of Glasgow, UK; Department of Neurology (Y.Y., S. Kusunoki), Kindai University Faculty of Medicine, Osaka-Sayama City, Osaka, Japan; Department of Neurology (M.M.D.), University of Kansas Medical Center, Kansas City; Department of Neurology (W.W., N.K.), University of Vermont Medical Centre, Burlington; National Institute of Neurosciences and Hospital (Q.D.M.), Agargoan, Bangladesh; Department of Neurology (T.H.), Aarhus University Hospital; Department of Neurology (S.H.S.), Odense University Hospital and University of Southern Denmark, Odense, Denmark; Department of Neurology, Neuromuscular Unit (C.C.), Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Department of Neurology (K.B.), Groote Schuur Hospital, University of Cape Town, South Africa; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle, UK; Department of Neurology (B.v.d.B., C.J.G.), Franciscus Vlietland Hospital, Schiedam, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (S. Kuwabara), Chiba University, Japan; Department of Neurology (P.V.d.B.), Neuromuscular Reference Centre, University Hospital Saint-Luc, University of Louvain, Brussels, Belgium; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Dysimmune Neuropathies Unit, Department of Systems Medicine (G.A.M.), Tor Vergata University Hospital, Rome, Italy; Department of Medicine (N.S.), University of Malaya, Kuala Lumpur; Department of Neurology (G.G.), University Hospital of Modena, Italy; Department of Clinical Neurophysiology, Reference Centre for NMD (Y.P.), CHU Nantes, France; Department of Neurology (J.B.), Saarland University Medical School, Homburg-Saarland (previous affiliation); MVZ Pfalzklinikum (J.B.), Kusel, Germany (current affiliation); Department of Neurology (K.K., R.P.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (C.M.), Hospital Británico, Buenos Aires, Argentina; Department of Neurology (M.J.S.T.), Hospital Marques de Valdecilla, Santander; Department of Neurology (L.Q., I.I.), Hospital de la Santa Creu i Santa Pau, U.A.B. CIBERER and ERN-NMD, Barcelona, Spain; Department of Neurology (Y.W.), Affiliated Hospital of Jining Medical University, Shandong Province, China; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Clinical and Research Institute, Milan University, Rozzano, Italy; Nuffield Department of Clinical Neurosciences (S.R.), University of Oxford and Oxford University Hospitals NHS Foundation Trust, UK; Department of Neurosciences, Ophthalmology, Rehabilitation, Genetics and Maternal Sciences (A.S.), University of Genova; IRCCS San Martino Hospital (A.S.), Genova, Italy; Department of Neurology (J.P.), Hospital Clínico de Santiago, Santiago de Compostela (A Coruña), Spain; Department of Neurology (F.H.V.), Franciscus Vlietland Hospital (location: Franciscus Gasthuis), Rotterdam, the Netherlands; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (V.G.), Montefiore Medical Centre, Bronx, NY; Department of Neurology (G. Cavaletti), University Milano-Bicocca, Monza, Italy; Department of Neurology (G.G.-G.), Hospital Universitario Infanta Sofía, San Sebastián de los Reyes, Spain; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, Buenos Aires, Argentina; Department of Neurology (L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (H.D.K.), University Health Network, University of Toronto, Canada; Department of Neurology (E.D.), University Hospital of Larissa, Greece; Department of Neurology, Reference Centre for NMD (S.A.), CHU Timone, Marseille, France; Department of Neurology (A.J.v.d.K., F.E.), Amsterdam University Medical Centre, University of Amsterdam, Neuroscience Institute, Netherlands Neuromuscular Centre, Euro-NMD; Department of Neurology (P.W.W.), Haga Hospital, Den Haag; Department of Neurology (H.J.G.), Reinier de Graaf Hospital, Delft, the Netherlands; Department of Neurology (R.D.M.H.), King's College Hospital, London; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, UK; Department of Neurology (K.A.S.), University of Texas Health Science Centre at Houston; Department of Neurology (S. Karafiath), University of Utah School of Medicine, Salt Lake City; Department of Neurology (M.V.), Lahey Hospital and Medical Center, Tufts University School of Medicine, Burlington, MA; Department of Neurology (G.A.), Mental Health and Sensory Organs (NESMOS), University of Rome 'Sapienza,' Sant'Andrea Hospital, Rome, Italy; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Canada; Department of Neurology (C.G.F.), Maastricht University Medical Centre, the Netherlands; Department of Neurology (M.B.), Leeds Teaching Hospitals; Department of Neurology (R.C.R.), Addenbrooke's Hospital, Cambridge, UK; Department of Neurology (N.J.S.), University at Buffalo Jacobs School of Medicine and Biomedical Sciences, NY; Department of Neurology (R.F.), Scientific Institute San Raffaele, Milan, Italy; Department of Neurology (G.W.v.D.), Canisius Wilhelmina Hospital, Nijmegen; Department of Neurology (M.P.J.G.), Jeroen Bosch Hospital, 's-Hertogenbosch; Department of Neurology (C.S.M.S.), Leiden University Medical Centre, the Netherlands; and Department of Neurology (K.C.G.), St. Elizabeth's Medical Centre, Tufts University, School of Medicine, Boston, MA.; Dimachkie MM; From the Departments of Neurology (A.Y.D., C.W., B.v.d.B., C.V., J.R., S.E.L., K.K., B.C.J.), Public Health (H.F.L.), and Immunology (B.C.J.), Erasmus MC, University Medical Centre Rotterdam; Department of Neurology (C.W., J.P.A.S.), Maasstad Hospital, Rotterdam, the Netherlands; Laboratory of Gut-Brain Signaling (B.I., N.P., Z.I.), Laboratory Sciences and Services Division, Dhaka, Bangladesh; Department of Neurology (A.D., G. Chavada, H.J.W.), College of Medical, Veterinary and Life Sciences, University of Glasgow, UK; Department of Neurology (Y.Y., S. Kusunoki), Kindai University Faculty of Medicine, Osaka-Sayama City, Osaka, Japan; Department of Neurology (M.M.D.), University of Kansas Medical Center, Kansas City; Department of Neurology (W.W., N.K.), University of Vermont Medical Centre, Burlington; National Institute of Neurosciences and Hospital (Q.D.M.), Agargoan, Bangladesh; Department of Neurology (T.H.), Aarhus University Hospital; Department of Neurology (S.H.S.), Odense University Hospital and University of Southern Denmark, Odense, Denmark; Department of Neurology, Neuromuscular Unit (C.C.), Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Department of Neurology (K.B.), Groote Schuur Hospital, University of Cape Town, South Africa; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle, UK; Department of Neurology (B.v.d.B., C.J.G.), Franciscus Vlietland Hospital, Schiedam, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (S. Kuwabara), Chiba University, Japan; Department of Neurology (P.V.d.B.), Neuromuscular Reference Centre, University Hospital Saint-Luc, University of Louvain, Brussels, Belgium; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Dysimmune Neuropathies Unit, Department of Systems Medicine (G.A.M.), Tor Vergata University Hospital, Rome, Italy; Department of Medicine (N.S.), University of Malaya, Kuala Lumpur; Department of Neurology (G.G.), University Hospital of Modena, Italy; Department of Clinical Neurophysiology, Reference Centre for NMD (Y.P.), CHU Nantes, France; Department of Neurology (J.B.), Saarland University Medical School, Homburg-Saarland (previous affiliation); MVZ Pfalzklinikum (J.B.), Kusel, Germany (current affiliation); Department of Neurology (K.K., R.P.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (C.M.), Hospital Británico, Buenos Aires, Argentina; Department of Neurology (M.J.S.T.), Hospital Marques de Valdecilla, Santander; Department of Neurology (L.Q., I.I.), Hospital de la Santa Creu i Santa Pau, U.A.B. CIBERER and ERN-NMD, Barcelona, Spain; Department of Neurology (Y.W.), Affiliated Hospital of Jining Medical University, Shandong Province, China; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Clinical and Research Institute, Milan University, Rozzano, Italy; Nuffield Department of Clinical Neurosciences (S.R.), University of Oxford and Oxford University Hospitals NHS Foundation Trust, UK; Department of Neurosciences, Ophthalmology, Rehabilitation, Genetics and Maternal Sciences (A.S.), University of Genova; IRCCS San Martino Hospital (A.S.), Genova, Italy; Department of Neurology (J.P.), Hospital Clínico de Santiago, Santiago de Compostela (A Coruña), Spain; Department of Neurology (F.H.V.), Franciscus Vlietland Hospital (location: Franciscus Gasthuis), Rotterdam, the Netherlands; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (V.G.), Montefiore Medical Centre, Bronx, NY; Department of Neurology (G. Cavaletti), University Milano-Bicocca, Monza, Italy; Department of Neurology (G.G.-G.), Hospital Universitario Infanta Sofía, San Sebastián de los Reyes, Spain; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, Buenos Aires, Argentina; Department of Neurology (L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (H.D.K.), University Health Network, University of Toronto, Canada; Department of Neurology (E.D.), University Hospital of Larissa, Greece; Department of Neurology, Reference Centre for NMD (S.A.), CHU Timone, Marseille, France; Department of Neurology (A.J.v.d.K., F.E.), Amsterdam University Medical Centre, University of Amsterdam, Neuroscience Institute, Netherlands Neuromuscular Centre, Euro-NMD; Department of Neurology (P.W.W.), Haga Hospital, Den Haag; Department of Neurology (H.J.G.), Reinier de Graaf Hospital, Delft, the Netherlands; Department of Neurology (R.D.M.H.), King's College Hospital, London; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, UK; Department of Neurology (K.A.S.), University of Texas Health Science Centre at Houston; Department of Neurology (S. Karafiath), University of Utah School of Medicine, Salt Lake City; Department of Neurology (M.V.), Lahey Hospital and Medical Center, Tufts University School of Medicine, Burlington, MA; Department of Neurology (G.A.), Mental Health and Sensory Organs (NESMOS), University of Rome 'Sapienza,' Sant'Andrea Hospital, Rome, Italy; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Canada; Department of Neurology (C.G.F.), Maastricht University Medical Centre, the Netherlands; Department of Neurology (M.B.), Leeds Teaching Hospitals; Department of Neurology (R.C.R.), Addenbrooke's Hospital, Cambridge, UK; Department of Neurology (N.J.S.), University at Buffalo Jacobs School of Medicine and Biomedical Sciences, NY; Department of Neurology (R.F.), Scientific Institute San Raffaele, Milan, Italy; Department of Neurology (G.W.v.D.), Canisius Wilhelmina Hospital, Nijmegen; Department of Neurology (M.P.J.G.), Jeroen Bosch Hospital, 's-Hertogenbosch; Department of Neurology (C.S.M.S.), Leiden University Medical Centre, the Netherlands; and Department of Neurology (K.C.G.), St. Elizabeth's Medical Centre, Tufts University, School of Medicine, Boston, MA.; Waheed W; From the Departments of Neurology (A.Y.D., C.W., B.v.d.B., C.V., J.R., S.E.L., K.K., B.C.J.), Public Health (H.F.L.), and Immunology (B.C.J.), Erasmus MC, University Medical Centre Rotterdam; Department of Neurology (C.W., J.P.A.S.), Maasstad Hospital, Rotterdam, the Netherlands; Laboratory of Gut-Brain Signaling (B.I., N.P., Z.I.), Laboratory Sciences and Services Division, Dhaka, Bangladesh; Department of Neurology (A.D., G. Chavada, H.J.W.), College of Medical, Veterinary and Life Sciences, University of Glasgow, UK; Department of Neurology (Y.Y., S. Kusunoki), Kindai University Faculty of Medicine, Osaka-Sayama City, Osaka, Japan; Department of Neurology (M.M.D.), University of Kansas Medical Center, Kansas City; Department of Neurology (W.W., N.K.), University of Vermont Medical Centre, Burlington; National Institute of Neurosciences and Hospital (Q.D.M.), Agargoan, Bangladesh; Department of Neurology (T.H.), Aarhus University Hospital; Department of Neurology (S.H.S.), Odense University Hospital and University of Southern Denmark, Odense, Denmark; Department of Neurology, Neuromuscular Unit (C.C.), Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Department of Neurology (K.B.), Groote Schuur Hospital, University of Cape Town, South Africa; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle, UK; Department of Neurology (B.v.d.B., C.J.G.), Franciscus Vlietland Hospital, Schiedam, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (S. Kuwabara), Chiba University, Japan; Department of Neurology (P.V.d.B.), Neuromuscular Reference Centre, University Hospital Saint-Luc, University of Louvain, Brussels, Belgium; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Dysimmune Neuropathies Unit, Department of Systems Medicine (G.A.M.), Tor Vergata University Hospital, Rome, Italy; Department of Medicine (N.S.), University of Malaya, Kuala Lumpur; Department of Neurology (G.G.), University Hospital of Modena, Italy; Department of Clinical Neurophysiology, Reference Centre for NMD (Y.P.), CHU Nantes, France; Department of Neurology (J.B.), Saarland University Medical School, Homburg-Saarland (previous affiliation); MVZ Pfalzklinikum (J.B.), Kusel, Germany (current affiliation); Department of Neurology (K.K., R.P.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (C.M.), Hospital Británico, Buenos Aires, Argentina; Department of Neurology (M.J.S.T.), Hospital Marques de Valdecilla, Santander; Department of Neurology (L.Q., I.I.), Hospital de la Santa Creu i Santa Pau, U.A.B. CIBERER and ERN-NMD, Barcelona, Spain; Department of Neurology (Y.W.), Affiliated Hospital of Jining Medical University, Shandong Province, China; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Clinical and Research Institute, Milan University, Rozzano, Italy; Nuffield Department of Clinical Neurosciences (S.R.), University of Oxford and Oxford University Hospitals NHS Foundation Trust, UK; Department of Neurosciences, Ophthalmology, Rehabilitation, Genetics and Maternal Sciences (A.S.), University of Genova; IRCCS San Martino Hospital (A.S.), Genova, Italy; Department of Neurology (J.P.), Hospital Clínico de Santiago, Santiago de Compostela (A Coruña), Spain; Department of Neurology (F.H.V.), Franciscus Vlietland Hospital (location: Franciscus Gasthuis), Rotterdam, the Netherlands; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (V.G.), Montefiore Medical Centre, Bronx, NY; Department of Neurology (G. Cavaletti), University Milano-Bicocca, Monza, Italy; Department of Neurology (G.G.-G.), Hospital Universitario Infanta Sofía, San Sebastián de los Reyes, Spain; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, Buenos Aires, Argentina; Department of Neurology (L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (H.D.K.), University Health Network, University of Toronto, Canada; Department of Neurology (E.D.), University Hospital of Larissa, Greece; Department of Neurology, Reference Centre for NMD (S.A.), CHU Timone, Marseille, France; Department of Neurology (A.J.v.d.K., F.E.), Amsterdam University Medical Centre, University of Amsterdam, Neuroscience Institute, Netherlands Neuromuscular Centre, Euro-NMD; Department of Neurology (P.W.W.), Haga Hospital, Den Haag; Department of Neurology (H.J.G.), Reinier de Graaf Hospital, Delft, the Netherlands; Department of Neurology (R.D.M.H.), King's College Hospital, London; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, UK; Department of Neurology (K.A.S.), University of Texas Health Science Centre at Houston; Department of Neurology (S. Karafiath), University of Utah School of Medicine, Salt Lake City; Department of Neurology (M.V.), Lahey Hospital and Medical Center, Tufts University School of Medicine, Burlington, MA; Department of Neurology (G.A.), Mental Health and Sensory Organs (NESMOS), University of Rome 'Sapienza,' Sant'Andrea Hospital, Rome, Italy; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Canada; Department of Neurology (C.G.F.), Maastricht University Medical Centre, the Netherlands; Department of Neurology (M.B.), Leeds Teaching Hospitals; Department of Neurology (R.C.R.), Addenbrooke's Hospital, Cambridge, UK; Department of Neurology (N.J.S.), University at Buffalo Jacobs School of Medicine and Biomedical Sciences, NY; Department of Neurology (R.F.), Scientific Institute San Raffaele, Milan, Italy; Department of Neurology (G.W.v.D.), Canisius Wilhelmina Hospital, Nijmegen; Department of Neurology (M.P.J.G.), Jeroen Bosch Hospital, 's-Hertogenbosch; Department of Neurology (C.S.M.S.), Leiden University Medical Centre, the Netherlands; and Department of Neurology (K.C.G.), St. Elizabeth's Medical Centre, Tufts University, School of Medicine, Boston, MA.; Kolb N; From the Departments of Neurology (A.Y.D., C.W., B.v.d.B., C.V., J.R., S.E.L., K.K., B.C.J.), Public Health (H.F.L.), and Immunology (B.C.J.), Erasmus MC, University Medical Centre Rotterdam; Department of Neurology (C.W., J.P.A.S.), Maasstad Hospital, Rotterdam, the Netherlands; Laboratory of Gut-Brain Signaling (B.I., N.P., Z.I.), Laboratory Sciences and Services Division, Dhaka, Bangladesh; Department of Neurology (A.D., G. Chavada, H.J.W.), College of Medical, Veterinary and Life Sciences, University of Glasgow, UK; Department of Neurology (Y.Y., S. Kusunoki), Kindai University Faculty of Medicine, Osaka-Sayama City, Osaka, Japan; Department of Neurology (M.M.D.), University of Kansas Medical Center, Kansas City; Department of Neurology (W.W., N.K.), University of Vermont Medical Centre, Burlington; National Institute of Neurosciences and Hospital (Q.D.M.), Agargoan, Bangladesh; Department of Neurology (T.H.), Aarhus University Hospital; Department of Neurology (S.H.S.), Odense University Hospital and University of Southern Denmark, Odense, Denmark; Department of Neurology, Neuromuscular Unit (C.C.), Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Department of Neurology (K.B.), Groote Schuur Hospital, University of Cape Town, South Africa; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle, UK; Department of Neurology (B.v.d.B., C.J.G.), Franciscus Vlietland Hospital, Schiedam, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (S. Kuwabara), Chiba University, Japan; Department of Neurology (P.V.d.B.), Neuromuscular Reference Centre, University Hospital Saint-Luc, University of Louvain, Brussels, Belgium; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Dysimmune Neuropathies Unit, Department of Systems Medicine (G.A.M.), Tor Vergata University Hospital, Rome, Italy; Department of Medicine (N.S.), University of Malaya, Kuala Lumpur; Department of Neurology (G.G.), University Hospital of Modena, Italy; Department of Clinical Neurophysiology, Reference Centre for NMD (Y.P.), CHU Nantes, France; Department of Neurology (J.B.), Saarland University Medical School, Homburg-Saarland (previous affiliation); MVZ Pfalzklinikum (J.B.), Kusel, Germany (current affiliation); Department of Neurology (K.K., R.P.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (C.M.), Hospital Británico, Buenos Aires, Argentina; Department of Neurology (M.J.S.T.), Hospital Marques de Valdecilla, Santander; Department of Neurology (L.Q., I.I.), Hospital de la Santa Creu i Santa Pau, U.A.B. CIBERER and ERN-NMD, Barcelona, Spain; Department of Neurology (Y.W.), Affiliated Hospital of Jining Medical University, Shandong Province, China; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Clinical and Research Institute, Milan University, Rozzano, Italy; Nuffield Department of Clinical Neurosciences (S.R.), University of Oxford and Oxford University Hospitals NHS Foundation Trust, UK; Department of Neurosciences, Ophthalmology, Rehabilitation, Genetics and Maternal Sciences (A.S.), University of Genova; IRCCS San Martino Hospital (A.S.), Genova, Italy; Department of Neurology (J.P.), Hospital Clínico de Santiago, Santiago de Compostela (A Coruña), Spain; Department of Neurology (F.H.V.), Franciscus Vlietland Hospital (location: Franciscus Gasthuis), Rotterdam, the Netherlands; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (V.G.), Montefiore Medical Centre, Bronx, NY; Department of Neurology (G. Cavaletti), University Milano-Bicocca, Monza, Italy; Department of Neurology (G.G.-G.), Hospital Universitario Infanta Sofía, San Sebastián de los Reyes, Spain; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, Buenos Aires, Argentina; Department of Neurology (L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (H.D.K.), University Health Network, University of Toronto, Canada; Department of Neurology (E.D.), University Hospital of Larissa, Greece; Department of Neurology, Reference Centre for NMD (S.A.), CHU Timone, Marseille, France; Department of Neurology (A.J.v.d.K., F.E.), Amsterdam University Medical Centre, University of Amsterdam, Neuroscience Institute, Netherlands Neuromuscular Centre, Euro-NMD; Department of Neurology (P.W.W.), Haga Hospital, Den Haag; Department of Neurology (H.J.G.), Reinier de Graaf Hospital, Delft, the Netherlands; Department of Neurology (R.D.M.H.), King's College Hospital, London; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, UK; Department of Neurology (K.A.S.), University of Texas Health Science Centre at Houston; Department of Neurology (S. Karafiath), University of Utah School of Medicine, Salt Lake City; Department of Neurology (M.V.), Lahey Hospital and Medical Center, Tufts University School of Medicine, Burlington, MA; Department of Neurology (G.A.), Mental Health and Sensory Organs (NESMOS), University of Rome 'Sapienza,' Sant'Andrea Hospital, Rome, Italy; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Canada; Department of Neurology (C.G.F.), Maastricht University Medical Centre, the Netherlands; Department of Neurology (M.B.), Leeds Teaching Hospitals; Department of Neurology (R.C.R.), Addenbrooke's Hospital, Cambridge, UK; Department of Neurology (N.J.S.), University at Buffalo Jacobs School of Medicine and Biomedical Sciences, NY; Department of Neurology (R.F.), Scientific Institute San Raffaele, Milan, Italy; Department of Neurology (G.W.v.D.), Canisius Wilhelmina Hospital, Nijmegen; Department of Neurology (M.P.J.G.), Jeroen Bosch Hospital, 's-Hertogenbosch; Department of Neurology (C.S.M.S.), Leiden University Medical Centre, the Netherlands; and Department of Neurology (K.C.G.), St. Elizabeth's Medical Centre, Tufts University, School of Medicine, Boston, MA.; Islam Z; From the Departments of Neurology (A.Y.D., C.W., B.v.d.B., C.V., J.R., S.E.L., K.K., B.C.J.), Public Health (H.F.L.), and Immunology (B.C.J.), Erasmus MC, University Medical Centre Rotterdam; Department of Neurology (C.W., J.P.A.S.), Maasstad Hospital, Rotterdam, the Netherlands; Laboratory of Gut-Brain Signaling (B.I., N.P., Z.I.), Laboratory Sciences and Services Division, Dhaka, Bangladesh; Department of Neurology (A.D., G. Chavada, H.J.W.), College of Medical, Veterinary and Life Sciences, University of Glasgow, UK; Department of Neurology (Y.Y., S. Kusunoki), Kindai University Faculty of Medicine, Osaka-Sayama City, Osaka, Japan; Department of Neurology (M.M.D.), University of Kansas Medical Center, Kansas City; Department of Neurology (W.W., N.K.), University of Vermont Medical Centre, Burlington; National Institute of Neurosciences and Hospital (Q.D.M.), Agargoan, Bangladesh; Department of Neurology (T.H.), Aarhus University Hospital; Department of Neurology (S.H.S.), Odense University Hospital and University of Southern Denmark, Odense, Denmark; Department of Neurology, Neuromuscular Unit (C.C.), Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Department of Neurology (K.B.), Groote Schuur Hospital, University of Cape Town, South Africa; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle, UK; Department of Neurology (B.v.d.B., C.J.G.), Franciscus Vlietland Hospital, Schiedam, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (S. Kuwabara), Chiba University, Japan; Department of Neurology (P.V.d.B.), Neuromuscular Reference Centre, University Hospital Saint-Luc, University of Louvain, Brussels, Belgium; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Dysimmune Neuropathies Unit, Department of Systems Medicine (G.A.M.), Tor Vergata University Hospital, Rome, Italy; Department of Medicine (N.S.), University of Malaya, Kuala Lumpur; Department of Neurology (G.G.), University Hospital of Modena, Italy; Department of Clinical Neurophysiology, Reference Centre for NMD (Y.P.), CHU Nantes, France; Department of Neurology (J.B.), Saarland University Medical School, Homburg-Saarland (previous affiliation); MVZ Pfalzklinikum (J.B.), Kusel, Germany (current affiliation); Department of Neurology (K.K., R.P.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (C.M.), Hospital Británico, Buenos Aires, Argentina; Department of Neurology (M.J.S.T.), Hospital Marques de Valdecilla, Santander; Department of Neurology (L.Q., I.I.), Hospital de la Santa Creu i Santa Pau, U.A.B. CIBERER and ERN-NMD, Barcelona, Spain; Department of Neurology (Y.W.), Affiliated Hospital of Jining Medical University, Shandong Province, China; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Clinical and Research Institute, Milan University, Rozzano, Italy; Nuffield Department of Clinical Neurosciences (S.R.), University of Oxford and Oxford University Hospitals NHS Foundation Trust, UK; Department of Neurosciences, Ophthalmology, Rehabilitation, Genetics and Maternal Sciences (A.S.), University of Genova; IRCCS San Martino Hospital (A.S.), Genova, Italy; Department of Neurology (J.P.), Hospital Clínico de Santiago, Santiago de Compostela (A Coruña), Spain; Department of Neurology (F.H.V.), Franciscus Vlietland Hospital (location: Franciscus Gasthuis), Rotterdam, the Netherlands; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (V.G.), Montefiore Medical Centre, Bronx, NY; Department of Neurology (G. Cavaletti), University Milano-Bicocca, Monza, Italy; Department of Neurology (G.G.-G.), Hospital Universitario Infanta Sofía, San Sebastián de los Reyes, Spain; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, Buenos Aires, Argentina; Department of Neurology (L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (H.D.K.), University Health Network, University of Toronto, Canada; Department of Neurology (E.D.), University Hospital of Larissa, Greece; Department of Neurology, Reference Centre for NMD (S.A.), CHU Timone, Marseille, France; Department of Neurology (A.J.v.d.K., F.E.), Amsterdam University Medical Centre, University of Amsterdam, Neuroscience Institute, Netherlands Neuromuscular Centre, Euro-NMD; Department of Neurology (P.W.W.), Haga Hospital, Den Haag; Department of Neurology (H.J.G.), Reinier de Graaf Hospital, Delft, the Netherlands; Department of Neurology (R.D.M.H.), King's College Hospital, London; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, UK; Department of Neurology (K.A.S.), University of Texas Health Science Centre at Houston; Department of Neurology (S. Karafiath), University of Utah School of Medicine, Salt Lake City; Department of Neurology (M.V.), Lahey Hospital and Medical Center, Tufts University School of Medicine, Burlington, MA; Department of Neurology (G.A.), Mental Health and Sensory Organs (NESMOS), University of Rome 'Sapienza,' Sant'Andrea Hospital, Rome, Italy; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Canada; Department of Neurology (C.G.F.), Maastricht University Medical Centre, the Netherlands; Department of Neurology (M.B.), Leeds Teaching Hospitals; Department of Neurology (R.C.R.), Addenbrooke's Hospital, Cambridge, UK; Department of Neurology (N.J.S.), University at Buffalo Jacobs School of Medicine and Biomedical Sciences, NY; Department of Neurology (R.F.), Scientific Institute San Raffaele, Milan, Italy; Department of Neurology (G.W.v.D.), Canisius Wilhelmina Hospital, Nijmegen; Department of Neurology (M.P.J.G.), Jeroen Bosch Hospital, 's-Hertogenbosch; Department of Neurology (C.S.M.S.), Leiden University Medical Centre, the Netherlands; and Department of Neurology (K.C.G.), St. Elizabeth's Medical Centre, Tufts University, School of Medicine, Boston, MA.; Mohammad QD; From the Departments of Neurology (A.Y.D., C.W., B.v.d.B., C.V., J.R., S.E.L., K.K., B.C.J.), Public Health (H.F.L.), and Immunology (B.C.J.), Erasmus MC, University Medical Centre Rotterdam; Department of Neurology (C.W., J.P.A.S.), Maasstad Hospital, Rotterdam, the Netherlands; Laboratory of Gut-Brain Signaling (B.I., N.P., Z.I.), Laboratory Sciences and Services Division, Dhaka, Bangladesh; Department of Neurology (A.D., G. Chavada, H.J.W.), College of Medical, Veterinary and Life Sciences, University of Glasgow, UK; Department of Neurology (Y.Y., S. Kusunoki), Kindai University Faculty of Medicine, Osaka-Sayama City, Osaka, Japan; Department of Neurology (M.M.D.), University of Kansas Medical Center, Kansas City; Department of Neurology (W.W., N.K.), University of Vermont Medical Centre, Burlington; National Institute of Neurosciences and Hospital (Q.D.M.), Agargoan, Bangladesh; Department of Neurology (T.H.), Aarhus University Hospital; Department of Neurology (S.H.S.), Odense University Hospital and University of Southern Denmark, Odense, Denmark; Department of Neurology, Neuromuscular Unit (C.C.), Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Department of Neurology (K.B.), Groote Schuur Hospital, University of Cape Town, South Africa; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle, UK; Department of Neurology (B.v.d.B., C.J.G.), Franciscus Vlietland Hospital, Schiedam, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (S. Kuwabara), Chiba University, Japan; Department of Neurology (P.V.d.B.), Neuromuscular Reference Centre, University Hospital Saint-Luc, University of Louvain, Brussels, Belgium; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Dysimmune Neuropathies Unit, Department of Systems Medicine (G.A.M.), Tor Vergata University Hospital, Rome, Italy; Department of Medicine (N.S.), University of Malaya, Kuala Lumpur; Department of Neurology (G.G.), University Hospital of Modena, Italy; Department of Clinical Neurophysiology, Reference Centre for NMD (Y.P.), CHU Nantes, France; Department of Neurology (J.B.), Saarland University Medical School, Homburg-Saarland (previous affiliation); MVZ Pfalzklinikum (J.B.), Kusel, Germany (current affiliation); Department of Neurology (K.K., R.P.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (C.M.), Hospital Británico, Buenos Aires, Argentina; Department of Neurology (M.J.S.T.), Hospital Marques de Valdecilla, Santander; Department of Neurology (L.Q., I.I.), Hospital de la Santa Creu i Santa Pau, U.A.B. CIBERER and ERN-NMD, Barcelona, Spain; Department of Neurology (Y.W.), Affiliated Hospital of Jining Medical University, Shandong Province, China; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Clinical and Research Institute, Milan University, Rozzano, Italy; Nuffield Department of Clinical Neurosciences (S.R.), University of Oxford and Oxford University Hospitals NHS Foundation Trust, UK; Department of Neurosciences, Ophthalmology, Rehabilitation, Genetics and Maternal Sciences (A.S.), University of Genova; IRCCS San Martino Hospital (A.S.), Genova, Italy; Department of Neurology (J.P.), Hospital Clínico de Santiago, Santiago de Compostela (A Coruña), Spain; Department of Neurology (F.H.V.), Franciscus Vlietland Hospital (location: Franciscus Gasthuis), Rotterdam, the Netherlands; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (V.G.), Montefiore Medical Centre, Bronx, NY; Department of Neurology (G. Cavaletti), University Milano-Bicocca, Monza, Italy; Department of Neurology (G.G.-G.), Hospital Universitario Infanta Sofía, San Sebastián de los Reyes, Spain; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, Buenos Aires, Argentina; Department of Neurology (L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (H.D.K.), University Health Network, University of Toronto, Canada; Department of Neurology (E.D.), University Hospital of Larissa, Greece; Department of Neurology, Reference Centre for NMD (S.A.), CHU Timone, Marseille, France; Department of Neurology (A.J.v.d.K., F.E.), Amsterdam University Medical Centre, University of Amsterdam, Neuroscience Institute, Netherlands Neuromuscular Centre, Euro-NMD; Department of Neurology (P.W.W.), Haga Hospital, Den Haag; Department of Neurology (H.J.G.), Reinier de Graaf Hospital, Delft, the Netherlands; Department of Neurology (R.D.M.H.), King's College Hospital, London; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, UK; Department of Neurology (K.A.S.), University of Texas Health Science Centre at Houston; Department of Neurology (S. Karafiath), University of Utah School of Medicine, Salt Lake City; Department of Neurology (M.V.), Lahey Hospital and Medical Center, Tufts University School of Medicine, Burlington, MA; Department of Neurology (G.A.), Mental Health and Sensory Organs (NESMOS), University of Rome 'Sapienza,' Sant'Andrea Hospital, Rome, Italy; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Canada; Department of Neurology (C.G.F.), Maastricht University Medical Centre, the Netherlands; Department of Neurology (M.B.), Leeds Teaching Hospitals; Department of Neurology (R.C.R.), Addenbrooke's Hospital, Cambridge, UK; Department of Neurology (N.J.S.), University at Buffalo Jacobs School of Medicine and Biomedical Sciences, NY; Department of Neurology (R.F.), Scientific Institute San Raffaele, Milan, Italy; Department of Neurology (G.W.v.D.), Canisius Wilhelmina Hospital, Nijmegen; Department of Neurology (M.P.J.G.), Jeroen Bosch Hospital, 's-Hertogenbosch; Department of Neurology (C.S.M.S.), Leiden University Medical Centre, the Netherlands; and Department of Neurology (K.C.G.), St. Elizabeth's Medical Centre, Tufts University, School of Medicine, Boston, MA.; Harbo T; From the Departments of Neurology (A.Y.D., C.W., B.v.d.B., C.V., J.R., S.E.L., K.K., B.C.J.), Public Health (H.F.L.), and Immunology (B.C.J.), Erasmus MC, University Medical Centre Rotterdam; Department of Neurology (C.W., J.P.A.S.), Maasstad Hospital, Rotterdam, the Netherlands; Laboratory of Gut-Brain Signaling (B.I., N.P., Z.I.), Laboratory Sciences and Services Division, Dhaka, Bangladesh; Department of Neurology (A.D., G. Chavada, H.J.W.), College of Medical, Veterinary and Life Sciences, University of Glasgow, UK; Department of Neurology (Y.Y., S. Kusunoki), Kindai University Faculty of Medicine, Osaka-Sayama City, Osaka, Japan; Department of Neurology (M.M.D.), University of Kansas Medical Center, Kansas City; Department of Neurology (W.W., N.K.), University of Vermont Medical Centre, Burlington; National Institute of Neurosciences and Hospital (Q.D.M.), Agargoan, Bangladesh; Department of Neurology (T.H.), Aarhus University Hospital; Department of Neurology (S.H.S.), Odense University Hospital and University of Southern Denmark, Odense, Denmark; Department of Neurology, Neuromuscular Unit (C.C.), Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Department of Neurology (K.B.), Groote Schuur Hospital, University of Cape Town, South Africa; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle, UK; Department of Neurology (B.v.d.B., C.J.G.), Franciscus Vlietland Hospital, Schiedam, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (S. Kuwabara), Chiba University, Japan; Department of Neurology (P.V.d.B.), Neuromuscular Reference Centre, University Hospital Saint-Luc, University of Louvain, Brussels, Belgium; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Dysimmune Neuropathies Unit, Department of Systems Medicine (G.A.M.), Tor Vergata University Hospital, Rome, Italy; Department of Medicine (N.S.), University of Malaya, Kuala Lumpur; Department of Neurology (G.G.), University Hospital of Modena, Italy; Department of Clinical Neurophysiology, Reference Centre for NMD (Y.P.), CHU Nantes, France; Department of Neurology (J.B.), Saarland University Medical School, Homburg-Saarland (previous affiliation); MVZ Pfalzklinikum (J.B.), Kusel, Germany (current affiliation); Department of Neurology (K.K., R.P.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (C.M.), Hospital Británico, Buenos Aires, Argentina; Department of Neurology (M.J.S.T.), Hospital Marques de Valdecilla, Santander; Department of Neurology (L.Q., I.I.), Hospital de la Santa Creu i Santa Pau, U.A.B. CIBERER and ERN-NMD, Barcelona, Spain; Department of Neurology (Y.W.), Affiliated Hospital of Jining Medical University, Shandong Province, China; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Clinical and Research Institute, Milan University, Rozzano, Italy; Nuffield Department of Clinical Neurosciences (S.R.), University of Oxford and Oxford University Hospitals NHS Foundation Trust, UK; Department of Neurosciences, Ophthalmology, Rehabilitation, Genetics and Maternal Sciences (A.S.), University of Genova; IRCCS San Martino Hospital (A.S.), Genova, Italy; Department of Neurology (J.P.), Hospital Clínico de Santiago, Santiago de Compostela (A Coruña), Spain; Department of Neurology (F.H.V.), Franciscus Vlietland Hospital (location: Franciscus Gasthuis), Rotterdam, the Netherlands; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (V.G.), Montefiore Medical Centre, Bronx, NY; Department of Neurology (G. Cavaletti), University Milano-Bicocca, Monza, Italy; Department of Neurology (G.G.-G.), Hospital Universitario Infanta Sofía, San Sebastián de los Reyes, Spain; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, Buenos Aires, Argentina; Department of Neurology (L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (H.D.K.), University Health Network, University of Toronto, Canada; Department of Neurology (E.D.), University Hospital of Larissa, Greece; Department of Neurology, Reference Centre for NMD (S.A.), CHU Timone, Marseille, France; Department of Neurology (A.J.v.d.K., F.E.), Amsterdam University Medical Centre, University of Amsterdam, Neuroscience Institute, Netherlands Neuromuscular Centre, Euro-NMD; Department of Neurology (P.W.W.), Haga Hospital, Den Haag; Department of Neurology (H.J.G.), Reinier de Graaf Hospital, Delft, the Netherlands; Department of Neurology (R.D.M.H.), King's College Hospital, London; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, UK; Department of Neurology (K.A.S.), University of Texas Health Science Centre at Houston; Department of Neurology (S. Karafiath), University of Utah School of Medicine, Salt Lake City; Department of Neurology (M.V.), Lahey Hospital and Medical Center, Tufts University School of Medicine, Burlington, MA; Department of Neurology (G.A.), Mental Health and Sensory Organs (NESMOS), University of Rome 'Sapienza,' Sant'Andrea Hospital, Rome, Italy; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Canada; Department of Neurology (C.G.F.), Maastricht University Medical Centre, the Netherlands; Department of Neurology (M.B.), Leeds Teaching Hospitals; Department of Neurology (R.C.R.), Addenbrooke's Hospital, Cambridge, UK; Department of Neurology (N.J.S.), University at Buffalo Jacobs School of Medicine and Biomedical Sciences, NY; Department of Neurology (R.F.), Scientific Institute San Raffaele, Milan, Italy; Department of Neurology (G.W.v.D.), Canisius Wilhelmina Hospital, Nijmegen; Department of Neurology (M.P.J.G.), Jeroen Bosch Hospital, 's-Hertogenbosch; Department of Neurology (C.S.M.S.), Leiden University Medical Centre, the Netherlands; and Department of Neurology (K.C.G.), St. Elizabeth's Medical Centre, Tufts University, School of Medicine, Boston, MA.; Sindrup SH; From the Departments of Neurology (A.Y.D., C.W., B.v.d.B., C.V., J.R., S.E.L., K.K., B.C.J.), Public Health (H.F.L.), and Immunology (B.C.J.), Erasmus MC, University Medical Centre Rotterdam; Department of Neurology (C.W., J.P.A.S.), Maasstad Hospital, Rotterdam, the Netherlands; Laboratory of Gut-Brain Signaling (B.I., N.P., Z.I.), Laboratory Sciences and Services Division, Dhaka, Bangladesh; Department of Neurology (A.D., G. Chavada, H.J.W.), College of Medical, Veterinary and Life Sciences, University of Glasgow, UK; Department of Neurology (Y.Y., S. Kusunoki), Kindai University Faculty of Medicine, Osaka-Sayama City, Osaka, Japan; Department of Neurology (M.M.D.), University of Kansas Medical Center, Kansas City; Department of Neurology (W.W., N.K.), University of Vermont Medical Centre, Burlington; National Institute of Neurosciences and Hospital (Q.D.M.), Agargoan, Bangladesh; Department of Neurology (T.H.), Aarhus University Hospital; Department of Neurology (S.H.S.), Odense University Hospital and University of Southern Denmark, Odense, Denmark; Department of Neurology, Neuromuscular Unit (C.C.), Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Department of Neurology (K.B.), Groote Schuur Hospital, University of Cape Town, South Africa; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle, UK; Department of Neurology (B.v.d.B., C.J.G.), Franciscus Vlietland Hospital, Schiedam, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (S. Kuwabara), Chiba University, Japan; Department of Neurology (P.V.d.B.), Neuromuscular Reference Centre, University Hospital Saint-Luc, University of Louvain, Brussels, Belgium; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Dysimmune Neuropathies Unit, Department of Systems Medicine (G.A.M.), Tor Vergata University Hospital, Rome, Italy; Department of Medicine (N.S.), University of Malaya, Kuala Lumpur; Department of Neurology (G.G.), University Hospital of Modena, Italy; Department of Clinical Neurophysiology, Reference Centre for NMD (Y.P.), CHU Nantes, France; Department of Neurology (J.B.), Saarland University Medical School, Homburg-Saarland (previous affiliation); MVZ Pfalzklinikum (J.B.), Kusel, Germany (current affiliation); Department of Neurology (K.K., R.P.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (C.M.), Hospital Británico, Buenos Aires, Argentina; Department of Neurology (M.J.S.T.), Hospital Marques de Valdecilla, Santander; Department of Neurology (L.Q., I.I.), Hospital de la Santa Creu i Santa Pau, U.A.B. CIBERER and ERN-NMD, Barcelona, Spain; Department of Neurology (Y.W.), Affiliated Hospital of Jining Medical University, Shandong Province, China; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Clinical and Research Institute, Milan University, Rozzano, Italy; Nuffield Department of Clinical Neurosciences (S.R.), University of Oxford and Oxford University Hospitals NHS Foundation Trust, UK; Department of Neurosciences, Ophthalmology, Rehabilitation, Genetics and Maternal Sciences (A.S.), University of Genova; IRCCS San Martino Hospital (A.S.), Genova, Italy; Department of Neurology (J.P.), Hospital Clínico de Santiago, Santiago de Compostela (A Coruña), Spain; Department of Neurology (F.H.V.), Franciscus Vlietland Hospital (location: Franciscus Gasthuis), Rotterdam, the Netherlands; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (V.G.), Montefiore Medical Centre, Bronx, NY; Department of Neurology (G. Cavaletti), University Milano-Bicocca, Monza, Italy; Department of Neurology (G.G.-G.), Hospital Universitario Infanta Sofía, San Sebastián de los Reyes, Spain; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, Buenos Aires, Argentina; Department of Neurology (L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (H.D.K.), University Health Network, University of Toronto, Canada; Department of Neurology (E.D.), University Hospital of Larissa, Greece; Department of Neurology, Reference Centre for NMD (S.A.), CHU Timone, Marseille, France; Department of Neurology (A.J.v.d.K., F.E.), Amsterdam University Medical Centre, University of Amsterdam, Neuroscience Institute, Netherlands Neuromuscular Centre, Euro-NMD; Department of Neurology (P.W.W.), Haga Hospital, Den Haag; Department of Neurology (H.J.G.), Reinier de Graaf Hospital, Delft, the Netherlands; Department of Neurology (R.D.M.H.), King's College Hospital, London; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, UK; Department of Neurology (K.A.S.), University of Texas Health Science Centre at Houston; Department of Neurology (S. Karafiath), University of Utah School of Medicine, Salt Lake City; Department of Neurology (M.V.), Lahey Hospital and Medical Center, Tufts University School of Medicine, Burlington, MA; Department of Neurology (G.A.), Mental Health and Sensory Organs (NESMOS), University of Rome 'Sapienza,' Sant'Andrea Hospital, Rome, Italy; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Canada; Department of Neurology (C.G.F.), Maastricht University Medical Centre, the Netherlands; Department of Neurology (M.B.), Leeds Teaching Hospitals; Department of Neurology (R.C.R.), Addenbrooke's Hospital, Cambridge, UK; Department of Neurology (N.J.S.), University at Buffalo Jacobs School of Medicine and Biomedical Sciences, NY; Department of Neurology (R.F.), Scientific Institute San Raffaele, Milan, Italy; Department of Neurology (G.W.v.D.), Canisius Wilhelmina Hospital, Nijmegen; Department of Neurology (M.P.J.G.), Jeroen Bosch Hospital, 's-Hertogenbosch; Department of Neurology (C.S.M.S.), Leiden University Medical Centre, the Netherlands; and Department of Neurology (K.C.G.), St. Elizabeth's Medical Centre, Tufts University, School of Medicine, Boston, MA.; Chavada G; From the Departments of Neurology (A.Y.D., C.W., B.v.d.B., C.V., J.R., S.E.L., K.K., B.C.J.), Public Health (H.F.L.), and Immunology (B.C.J.), Erasmus MC, University Medical Centre Rotterdam; Department of Neurology (C.W., J.P.A.S.), Maasstad Hospital, Rotterdam, the Netherlands; Laboratory of Gut-Brain Signaling (B.I., N.P., Z.I.), Laboratory Sciences and Services Division, Dhaka, Bangladesh; Department of Neurology (A.D., G. Chavada, H.J.W.), College of Medical, Veterinary and Life Sciences, University of Glasgow, UK; Department of Neurology (Y.Y., S. Kusunoki), Kindai University Faculty of Medicine, Osaka-Sayama City, Osaka, Japan; Department of Neurology (M.M.D.), University of Kansas Medical Center, Kansas City; Department of Neurology (W.W., N.K.), University of Vermont Medical Centre, Burlington; National Institute of Neurosciences and Hospital (Q.D.M.), Agargoan, Bangladesh; Department of Neurology (T.H.), Aarhus University Hospital; Department of Neurology (S.H.S.), Odense University Hospital and University of Southern Denmark, Odense, Denmark; Department of Neurology, Neuromuscular Unit (C.C.), Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Department of Neurology (K.B.), Groote Schuur Hospital, University of Cape Town, South Africa; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle, UK; Department of Neurology (B.v.d.B., C.J.G.), Franciscus Vlietland Hospital, Schiedam, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (S. Kuwabara), Chiba University, Japan; Department of Neurology (P.V.d.B.), Neuromuscular Reference Centre, University Hospital Saint-Luc, University of Louvain, Brussels, Belgium; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Dysimmune Neuropathies Unit, Department of Systems Medicine (G.A.M.), Tor Vergata University Hospital, Rome, Italy; Department of Medicine (N.S.), University of Malaya, Kuala Lumpur; Department of Neurology (G.G.), University Hospital of Modena, Italy; Department of Clinical Neurophysiology, Reference Centre for NMD (Y.P.), CHU Nantes, France; Department of Neurology (J.B.), Saarland University Medical School, Homburg-Saarland (previous affiliation); MVZ Pfalzklinikum (J.B.), Kusel, Germany (current affiliation); Department of Neurology (K.K., R.P.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (C.M.), Hospital Británico, Buenos Aires, Argentina; Department of Neurology (M.J.S.T.), Hospital Marques de Valdecilla, Santander; Department of Neurology (L.Q., I.I.), Hospital de la Santa Creu i Santa Pau, U.A.B. CIBERER and ERN-NMD, Barcelona, Spain; Department of Neurology (Y.W.), Affiliated Hospital of Jining Medical University, Shandong Province, China; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Clinical and Research Institute, Milan University, Rozzano, Italy; Nuffield Department of Clinical Neurosciences (S.R.), University of Oxford and Oxford University Hospitals NHS Foundation Trust, UK; Department of Neurosciences, Ophthalmology, Rehabilitation, Genetics and Maternal Sciences (A.S.), University of Genova; IRCCS San Martino Hospital (A.S.), Genova, Italy; Department of Neurology (J.P.), Hospital Clínico de Santiago, Santiago de Compostela (A Coruña), Spain; Department of Neurology (F.H.V.), Franciscus Vlietland Hospital (location: Franciscus Gasthuis), Rotterdam, the Netherlands; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (V.G.), Montefiore Medical Centre, Bronx, NY; Department of Neurology (G. Cavaletti), University Milano-Bicocca, Monza, Italy; Department of Neurology (G.G.-G.), Hospital Universitario Infanta Sofía, San Sebastián de los Reyes, Spain; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, Buenos Aires, Argentina; Department of Neurology (L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (H.D.K.), University Health Network, University of Toronto, Canada; Department of Neurology (E.D.), University Hospital of Larissa, Greece; Department of Neurology, Reference Centre for NMD (S.A.), CHU Timone, Marseille, France; Department of Neurology (A.J.v.d.K., F.E.), Amsterdam University Medical Centre, University of Amsterdam, Neuroscience Institute, Netherlands Neuromuscular Centre, Euro-NMD; Department of Neurology (P.W.W.), Haga Hospital, Den Haag; Department of Neurology (H.J.G.), Reinier de Graaf Hospital, Delft, the Netherlands; Department of Neurology (R.D.M.H.), King's College Hospital, London; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, UK; Department of Neurology (K.A.S.), University of Texas Health Science Centre at Houston; Department of Neurology (S. Karafiath), University of Utah School of Medicine, Salt Lake City; Department of Neurology (M.V.), Lahey Hospital and Medical Center, Tufts University School of Medicine, Burlington, MA; Department of Neurology (G.A.), Mental Health and Sensory Organs (NESMOS), University of Rome 'Sapienza,' Sant'Andrea Hospital, Rome, Italy; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Canada; Department of Neurology (C.G.F.), Maastricht University Medical Centre, the Netherlands; Department of Neurology (M.B.), Leeds Teaching Hospitals; Department of Neurology (R.C.R.), Addenbrooke's Hospital, Cambridge, UK; Department of Neurology (N.J.S.), University at Buffalo Jacobs School of Medicine and Biomedical Sciences, NY; Department of Neurology (R.F.), Scientific Institute San Raffaele, Milan, Italy; Department of Neurology (G.W.v.D.), Canisius Wilhelmina Hospital, Nijmegen; Department of Neurology (M.P.J.G.), Jeroen Bosch Hospital, 's-Hertogenbosch; Department of Neurology (C.S.M.S.), Leiden University Medical Centre, the Netherlands; and Department of Neurology (K.C.G.), St. Elizabeth's Medical Centre, Tufts University, School of Medicine, Boston, MA.; Willison HJ; From the Departments of Neurology (A.Y.D., C.W., B.v.d.B., C.V., J.R., S.E.L., K.K., B.C.J.), Public Health (H.F.L.), and Immunology (B.C.J.), Erasmus MC, University Medical Centre Rotterdam; Department of Neurology (C.W., J.P.A.S.), Maasstad Hospital, Rotterdam, the Netherlands; Laboratory of Gut-Brain Signaling (B.I., N.P., Z.I.), Laboratory Sciences and Services Division, Dhaka, Bangladesh; Department of Neurology (A.D., G. Chavada, H.J.W.), College of Medical, Veterinary and Life Sciences, University of Glasgow, UK; Department of Neurology (Y.Y., S. Kusunoki), Kindai University Faculty of Medicine, Osaka-Sayama City, Osaka, Japan; Department of Neurology (M.M.D.), University of Kansas Medical Center, Kansas City; Department of Neurology (W.W., N.K.), University of Vermont Medical Centre, Burlington; National Institute of Neurosciences and Hospital (Q.D.M.), Agargoan, Bangladesh; Department of Neurology (T.H.), Aarhus University Hospital; Department of Neurology (S.H.S.), Odense University Hospital and University of Southern Denmark, Odense, Denmark; Department of Neurology, Neuromuscular Unit (C.C.), Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Department of Neurology (K.B.), Groote Schuur Hospital, University of Cape Town, South Africa; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle, UK; Department of Neurology (B.v.d.B., C.J.G.), Franciscus Vlietland Hospital, Schiedam, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (S. Kuwabara), Chiba University, Japan; Department of Neurology (P.V.d.B.), Neuromuscular Reference Centre, University Hospital Saint-Luc, University of Louvain, Brussels, Belgium; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Dysimmune Neuropathies Unit, Department of Systems Medicine (G.A.M.), Tor Vergata University Hospital, Rome, Italy; Department of Medicine (N.S.), University of Malaya, Kuala Lumpur; Department of Neurology (G.G.), University Hospital of Modena, Italy; Department of Clinical Neurophysiology, Reference Centre for NMD (Y.P.), CHU Nantes, France; Department of Neurology (J.B.), Saarland University Medical School, Homburg-Saarland (previous affiliation); MVZ Pfalzklinikum (J.B.), Kusel, Germany (current affiliation); Department of Neurology (K.K., R.P.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (C.M.), Hospital Británico, Buenos Aires, Argentina; Department of Neurology (M.J.S.T.), Hospital Marques de Valdecilla, Santander; Department of Neurology (L.Q., I.I.), Hospital de la Santa Creu i Santa Pau, U.A.B. CIBERER and ERN-NMD, Barcelona, Spain; Department of Neurology (Y.W.), Affiliated Hospital of Jining Medical University, Shandong Province, China; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Clinical and Research Institute, Milan University, Rozzano, Italy; Nuffield Department of Clinical Neurosciences (S.R.), University of Oxford and Oxford University Hospitals NHS Foundation Trust, UK; Department of Neurosciences, Ophthalmology, Rehabilitation, Genetics and Maternal Sciences (A.S.), University of Genova; IRCCS San Martino Hospital (A.S.), Genova, Italy; Department of Neurology (J.P.), Hospital Clínico de Santiago, Santiago de Compostela (A Coruña), Spain; Department of Neurology (F.H.V.), Franciscus Vlietland Hospital (location: Franciscus Gasthuis), Rotterdam, the Netherlands; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (V.G.), Montefiore Medical Centre, Bronx, NY; Department of Neurology (G. Cavaletti), University Milano-Bicocca, Monza, Italy; Department of Neurology (G.G.-G.), Hospital Universitario Infanta Sofía, San Sebastián de los Reyes, Spain; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, Buenos Aires, Argentina; Department of Neurology (L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (H.D.K.), University Health Network, University of Toronto, Canada; Department of Neurology (E.D.), University Hospital of Larissa, Greece; Department of Neurology, Reference Centre for NMD (S.A.), CHU Timone, Marseille, France; Department of Neurology (A.J.v.d.K., F.E.), Amsterdam University Medical Centre, University of Amsterdam, Neuroscience Institute, Netherlands Neuromuscular Centre, Euro-NMD; Department of Neurology (P.W.W.), Haga Hospital, Den Haag; Department of Neurology (H.J.G.), Reinier de Graaf Hospital, Delft, the Netherlands; Department of Neurology (R.D.M.H.), King's College Hospital, London; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, UK; Department of Neurology (K.A.S.), University of Texas Health Science Centre at Houston; Department of Neurology (S. Karafiath), University of Utah School of Medicine, Salt Lake City; Department of Neurology (M.V.), Lahey Hospital and Medical Center, Tufts University School of Medicine, Burlington, MA; Department of Neurology (G.A.), Mental Health and Sensory Organs (NESMOS), University of Rome 'Sapienza,' Sant'Andrea Hospital, Rome, Italy; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Canada; Department of Neurology (C.G.F.), Maastricht University Medical Centre, the Netherlands; Department of Neurology (M.B.), Leeds Teaching Hospitals; Department of Neurology (R.C.R.), Addenbrooke's Hospital, Cambridge, UK; Department of Neurology (N.J.S.), University at Buffalo Jacobs School of Medicine and Biomedical Sciences, NY; Department of Neurology (R.F.), Scientific Institute San Raffaele, Milan, Italy; Department of Neurology (G.W.v.D.), Canisius Wilhelmina Hospital, Nijmegen; Department of Neurology (M.P.J.G.), Jeroen Bosch Hospital, 's-Hertogenbosch; Department of Neurology (C.S.M.S.), Leiden University Medical Centre, the Netherlands; and Department of Neurology (K.C.G.), St. Elizabeth's Medical Centre, Tufts University, School of Medicine, Boston, MA.; Casasnovas C; From the Departments of Neurology (A.Y.D., C.W., B.v.d.B., C.V., J.R., S.E.L., K.K., B.C.J.), Public Health (H.F.L.), and Immunology (B.C.J.), Erasmus MC, University Medical Centre Rotterdam; Department of Neurology (C.W., J.P.A.S.), Maasstad Hospital, Rotterdam, the Netherlands; Laboratory of Gut-Brain Signaling (B.I., N.P., Z.I.), Laboratory Sciences and Services Division, Dhaka, Bangladesh; Department of Neurology (A.D., G. Chavada, H.J.W.), College of Medical, Veterinary and Life Sciences, University of Glasgow, UK; Department of Neurology (Y.Y., S. Kusunoki), Kindai University Faculty of Medicine, Osaka-Sayama City, Osaka, Japan; Department of Neurology (M.M.D.), University of Kansas Medical Center, Kansas City; Department of Neurology (W.W., N.K.), University of Vermont Medical Centre, Burlington; National Institute of Neurosciences and Hospital (Q.D.M.), Agargoan, Bangladesh; Department of Neurology (T.H.), Aarhus University Hospital; Department of Neurology (S.H.S.), Odense University Hospital and University of Southern Denmark, Odense, Denmark; Department of Neurology, Neuromuscular Unit (C.C.), Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Department of Neurology (K.B.), Groote Schuur Hospital, University of Cape Town, South Africa; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle, UK; Department of Neurology (B.v.d.B., C.J.G.), Franciscus Vlietland Hospital, Schiedam, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (S. Kuwabara), Chiba University, Japan; Department of Neurology (P.V.d.B.), Neuromuscular Reference Centre, University Hospital Saint-Luc, University of Louvain, Brussels, Belgium; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Dysimmune Neuropathies Unit, Department of Systems Medicine (G.A.M.), Tor Vergata University Hospital, Rome, Italy; Department of Medicine (N.S.), University of Malaya, Kuala Lumpur; Department of Neurology (G.G.), University Hospital of Modena, Italy; Department of Clinical Neurophysiology, Reference Centre for NMD (Y.P.), CHU Nantes, France; Department of Neurology (J.B.), Saarland University Medical School, Homburg-Saarland (previous affiliation); MVZ Pfalzklinikum (J.B.), Kusel, Germany (current affiliation); Department of Neurology (K.K., R.P.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (C.M.), Hospital Británico, Buenos Aires, Argentina; Department of Neurology (M.J.S.T.), Hospital Marques de Valdecilla, Santander; Department of Neurology (L.Q., I.I.), Hospital de la Santa Creu i Santa Pau, U.A.B. CIBERER and ERN-NMD, Barcelona, Spain; Department of Neurology (Y.W.), Affiliated Hospital of Jining Medical University, Shandong Province, China; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Clinical and Research Institute, Milan University, Rozzano, Italy; Nuffield Department of Clinical Neurosciences (S.R.), University of Oxford and Oxford University Hospitals NHS Foundation Trust, UK; Department of Neurosciences, Ophthalmology, Rehabilitation, Genetics and Maternal Sciences (A.S.), University of Genova; IRCCS San Martino Hospital (A.S.), Genova, Italy; Department of Neurology (J.P.), Hospital Clínico de Santiago, Santiago de Compostela (A Coruña), Spain; Department of Neurology (F.H.V.), Franciscus Vlietland Hospital (location: Franciscus Gasthuis), Rotterdam, the Netherlands; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (V.G.), Montefiore Medical Centre, Bronx, NY; Department of Neurology (G. Cavaletti), University Milano-Bicocca, Monza, Italy; Department of Neurology (G.G.-G.), Hospital Universitario Infanta Sofía, San Sebastián de los Reyes, Spain; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, Buenos Aires, Argentina; Department of Neurology (L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (H.D.K.), University Health Network, University of Toronto, Canada; Department of Neurology (E.D.), University Hospital of Larissa, Greece; Department of Neurology, Reference Centre for NMD (S.A.), CHU Timone, Marseille, France; Department of Neurology (A.J.v.d.K., F.E.), Amsterdam University Medical Centre, University of Amsterdam, Neuroscience Institute, Netherlands Neuromuscular Centre, Euro-NMD; Department of Neurology (P.W.W.), Haga Hospital, Den Haag; Department of Neurology (H.J.G.), Reinier de Graaf Hospital, Delft, the Netherlands; Department of Neurology (R.D.M.H.), King's College Hospital, London; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, UK; Department of Neurology (K.A.S.), University of Texas Health Science Centre at Houston; Department of Neurology (S. Karafiath), University of Utah School of Medicine, Salt Lake City; Department of Neurology (M.V.), Lahey Hospital and Medical Center, Tufts University School of Medicine, Burlington, MA; Department of Neurology (G.A.), Mental Health and Sensory Organs (NESMOS), University of Rome 'Sapienza,' Sant'Andrea Hospital, Rome, Italy; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Canada; Department of Neurology (C.G.F.), Maastricht University Medical Centre, the Netherlands; Department of Neurology (M.B.), Leeds Teaching Hospitals; Department of Neurology (R.C.R.), Addenbrooke's Hospital, Cambridge, UK; Department of Neurology (N.J.S.), University at Buffalo Jacobs School of Medicine and Biomedical Sciences, NY; Department of Neurology (R.F.), Scientific Institute San Raffaele, Milan, Italy; Department of Neurology (G.W.v.D.), Canisius Wilhelmina Hospital, Nijmegen; Department of Neurology (M.P.J.G.), Jeroen Bosch Hospital, 's-Hertogenbosch; Department of Neurology (C.S.M.S.), Leiden University Medical Centre, the Netherlands; and Department of Neurology (K.C.G.), St. Elizabeth's Medical Centre, Tufts University, School of Medicine, Boston, MA.; Bateman K; From the Departments of Neurology (A.Y.D., C.W., B.v.d.B., C.V., J.R., S.E.L., K.K., B.C.J.), Public Health (H.F.L.), and Immunology (B.C.J.), Erasmus MC, University Medical Centre Rotterdam; Department of Neurology (C.W., J.P.A.S.), Maasstad Hospital, Rotterdam, the Netherlands; Laboratory of Gut-Brain Signaling (B.I., N.P., Z.I.), Laboratory Sciences and Services Division, Dhaka, Bangladesh; Department of Neurology (A.D., G. Chavada, H.J.W.), College of Medical, Veterinary and Life Sciences, University of Glasgow, UK; Department of Neurology (Y.Y., S. Kusunoki), Kindai University Faculty of Medicine, Osaka-Sayama City, Osaka, Japan; Department of Neurology (M.M.D.), University of Kansas Medical Center, Kansas City; Department of Neurology (W.W., N.K.), University of Vermont Medical Centre, Burlington; National Institute of Neurosciences and Hospital (Q.D.M.), Agargoan, Bangladesh; Department of Neurology (T.H.), Aarhus University Hospital; Department of Neurology (S.H.S.), Odense University Hospital and University of Southern Denmark, Odense, Denmark; Department of Neurology, Neuromuscular Unit (C.C.), Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Department of Neurology (K.B.), Groote Schuur Hospital, University of Cape Town, South Africa; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle, UK; Department of Neurology (B.v.d.B., C.J.G.), Franciscus Vlietland Hospital, Schiedam, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (S. Kuwabara), Chiba University, Japan; Department of Neurology (P.V.d.B.), Neuromuscular Reference Centre, University Hospital Saint-Luc, University of Louvain, Brussels, Belgium; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Dysimmune Neuropathies Unit, Department of Systems Medicine (G.A.M.), Tor Vergata University Hospital, Rome, Italy; Department of Medicine (N.S.), University of Malaya, Kuala Lumpur; Department of Neurology (G.G.), University Hospital of Modena, Italy; Department of Clinical Neurophysiology, Reference Centre for NMD (Y.P.), CHU Nantes, France; Department of Neurology (J.B.), Saarland University Medical School, Homburg-Saarland (previous affiliation); MVZ Pfalzklinikum (J.B.), Kusel, Germany (current affiliation); Department of Neurology (K.K., R.P.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (C.M.), Hospital Británico, Buenos Aires, Argentina; Department of Neurology (M.J.S.T.), Hospital Marques de Valdecilla, Santander; Department of Neurology (L.Q., I.I.), Hospital de la Santa Creu i Santa Pau, U.A.B. CIBERER and ERN-NMD, Barcelona, Spain; Department of Neurology (Y.W.), Affiliated Hospital of Jining Medical University, Shandong Province, China; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Clinical and Research Institute, Milan University, Rozzano, Italy; Nuffield Department of Clinical Neurosciences (S.R.), University of Oxford and Oxford University Hospitals NHS Foundation Trust, UK; Department of Neurosciences, Ophthalmology, Rehabilitation, Genetics and Maternal Sciences (A.S.), University of Genova; IRCCS San Martino Hospital (A.S.), Genova, Italy; Department of Neurology (J.P.), Hospital Clínico de Santiago, Santiago de Compostela (A Coruña), Spain; Department of Neurology (F.H.V.), Franciscus Vlietland Hospital (location: Franciscus Gasthuis), Rotterdam, the Netherlands; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (V.G.), Montefiore Medical Centre, Bronx, NY; Department of Neurology (G. Cavaletti), University Milano-Bicocca, Monza, Italy; Department of Neurology (G.G.-G.), Hospital Universitario Infanta Sofía, San Sebastián de los Reyes, Spain; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, Buenos Aires, Argentina; Department of Neurology (L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (H.D.K.), University Health Network, University of Toronto, Canada; Department of Neurology (E.D.), University Hospital of Larissa, Greece; Department of Neurology, Reference Centre for NMD (S.A.), CHU Timone, Marseille, France; Department of Neurology (A.J.v.d.K., F.E.), Amsterdam University Medical Centre, University of Amsterdam, Neuroscience Institute, Netherlands Neuromuscular Centre, Euro-NMD; Department of Neurology (P.W.W.), Haga Hospital, Den Haag; Department of Neurology (H.J.G.), Reinier de Graaf Hospital, Delft, the Netherlands; Department of Neurology (R.D.M.H.), King's College Hospital, London; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, UK; Department of Neurology (K.A.S.), University of Texas Health Science Centre at Houston; Department of Neurology (S. Karafiath), University of Utah School of Medicine, Salt Lake City; Department of Neurology (M.V.), Lahey Hospital and Medical Center, Tufts University School of Medicine, Burlington, MA; Department of Neurology (G.A.), Mental Health and Sensory Organs (NESMOS), University of Rome 'Sapienza,' Sant'Andrea Hospital, Rome, Italy; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Canada; Department of Neurology (C.G.F.), Maastricht University Medical Centre, the Netherlands; Department of Neurology (M.B.), Leeds Teaching Hospitals; Department of Neurology (R.C.R.), Addenbrooke's Hospital, Cambridge, UK; Department of Neurology (N.J.S.), University at Buffalo Jacobs School of Medicine and Biomedical Sciences, NY; Department of Neurology (R.F.), Scientific Institute San Raffaele, Milan, Italy; Department of Neurology (G.W.v.D.), Canisius Wilhelmina Hospital, Nijmegen; Department of Neurology (M.P.J.G.), Jeroen Bosch Hospital, 's-Hertogenbosch; Department of Neurology (C.S.M.S.), Leiden University Medical Centre, the Netherlands; and Department of Neurology (K.C.G.), St. Elizabeth's Medical Centre, Tufts University, School of Medicine, Boston, MA.; Miller JAL; From the Departments of Neurology (A.Y.D., C.W., B.v.d.B., C.V., J.R., S.E.L., K.K., B.C.J.), Public Health (H.F.L.), and Immunology (B.C.J.), Erasmus MC, University Medical Centre Rotterdam; Department of Neurology (C.W., J.P.A.S.), Maasstad Hospital, Rotterdam, the Netherlands; Laboratory of Gut-Brain Signaling (B.I., N.P., Z.I.), Laboratory Sciences and Services Division, Dhaka, Bangladesh; Department of Neurology (A.D., G. Chavada, H.J.W.), College of Medical, Veterinary and Life Sciences, University of Glasgow, UK; Department of Neurology (Y.Y., S. Kusunoki), Kindai University Faculty of Medicine, Osaka-Sayama City, Osaka, Japan; Department of Neurology (M.M.D.), University of Kansas Medical Center, Kansas City; Department of Neurology (W.W., N.K.), University of Vermont Medical Centre, Burlington; National Institute of Neurosciences and Hospital (Q.D.M.), Agargoan, Bangladesh; Department of Neurology (T.H.), Aarhus University Hospital; Department of Neurology (S.H.S.), Odense University Hospital and University of Southern Denmark, Odense, Denmark; Department of Neurology, Neuromuscular Unit (C.C.), Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Department of Neurology (K.B.), Groote Schuur Hospital, University of Cape Town, South Africa; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle, UK; Department of Neurology (B.v.d.B., C.J.G.), Franciscus Vlietland Hospital, Schiedam, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (S. Kuwabara), Chiba University, Japan; Department of Neurology (P.V.d.B.), Neuromuscular Reference Centre, University Hospital Saint-Luc, University of Louvain, Brussels, Belgium; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Dysimmune Neuropathies Unit, Department of Systems Medicine (G.A.M.), Tor Vergata University Hospital, Rome, Italy; Department of Medicine (N.S.), University of Malaya, Kuala Lumpur; Department of Neurology (G.G.), University Hospital of Modena, Italy; Department of Clinical Neurophysiology, Reference Centre for NMD (Y.P.), CHU Nantes, France; Department of Neurology (J.B.), Saarland University Medical School, Homburg-Saarland (previous affiliation); MVZ Pfalzklinikum (J.B.), Kusel, Germany (current affiliation); Department of Neurology (K.K., R.P.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (C.M.), Hospital Británico, Buenos Aires, Argentina; Department of Neurology (M.J.S.T.), Hospital Marques de Valdecilla, Santander; Department of Neurology (L.Q., I.I.), Hospital de la Santa Creu i Santa Pau, U.A.B. CIBERER and ERN-NMD, Barcelona, Spain; Department of Neurology (Y.W.), Affiliated Hospital of Jining Medical University, Shandong Province, China; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Clinical and Research Institute, Milan University, Rozzano, Italy; Nuffield Department of Clinical Neurosciences (S.R.), University of Oxford and Oxford University Hospitals NHS Foundation Trust, UK; Department of Neurosciences, Ophthalmology, Rehabilitation, Genetics and Maternal Sciences (A.S.), University of Genova; IRCCS San Martino Hospital (A.S.), Genova, Italy; Department of Neurology (J.P.), Hospital Clínico de Santiago, Santiago de Compostela (A Coruña), Spain; Department of Neurology (F.H.V.), Franciscus Vlietland Hospital (location: Franciscus Gasthuis), Rotterdam, the Netherlands; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (V.G.), Montefiore Medical Centre, Bronx, NY; Department of Neurology (G. Cavaletti), University Milano-Bicocca, Monza, Italy; Department of Neurology (G.G.-G.), Hospital Universitario Infanta Sofía, San Sebastián de los Reyes, Spain; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, Buenos Aires, Argentina; Department of Neurology (L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (H.D.K.), University Health Network, University of Toronto, Canada; Department of Neurology (E.D.), University Hospital of Larissa, Greece; Department of Neurology, Reference Centre for NMD (S.A.), CHU Timone, Marseille, France; Department of Neurology (A.J.v.d.K., F.E.), Amsterdam University Medical Centre, University of Amsterdam, Neuroscience Institute, Netherlands Neuromuscular Centre, Euro-NMD; Department of Neurology (P.W.W.), Haga Hospital, Den Haag; Department of Neurology (H.J.G.), Reinier de Graaf Hospital, Delft, the Netherlands; Department of Neurology (R.D.M.H.), King's College Hospital, London; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, UK; Department of Neurology (K.A.S.), University of Texas Health Science Centre at Houston; Department of Neurology (S. Karafiath), University of Utah School of Medicine, Salt Lake City; Department of Neurology (M.V.), Lahey Hospital and Medical Center, Tufts University School of Medicine, Burlington, MA; Department of Neurology (G.A.), Mental Health and Sensory Organs (NESMOS), University of Rome 'Sapienza,' Sant'Andrea Hospital, Rome, Italy; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Canada; Department of Neurology (C.G.F.), Maastricht University Medical Centre, the Netherlands; Department of Neurology (M.B.), Leeds Teaching Hospitals; Department of Neurology (R.C.R.), Addenbrooke's Hospital, Cambridge, UK; Department of Neurology (N.J.S.), University at Buffalo Jacobs School of Medicine and Biomedical Sciences, NY; Department of Neurology (R.F.), Scientific Institute San Raffaele, Milan, Italy; Department of Neurology (G.W.v.D.), Canisius Wilhelmina Hospital, Nijmegen; Department of Neurology (M.P.J.G.), Jeroen Bosch Hospital, 's-Hertogenbosch; Department of Neurology (C.S.M.S.), Leiden University Medical Centre, the Netherlands; and Department of Neurology (K.C.G.), St. Elizabeth's Medical Centre, Tufts University, School of Medicine, Boston, MA.; van den Berg B; From the Departments of Neurology (A.Y.D., C.W., B.v.d.B., C.V., J.R., S.E.L., K.K., B.C.J.), Public Health (H.F.L.), and Immunology (B.C.J.), Erasmus MC, University Medical Centre Rotterdam; Department of Neurology (C.W., J.P.A.S.), Maasstad Hospital, Rotterdam, the Netherlands; Laboratory of Gut-Brain Signaling (B.I., N.P., Z.I.), Laboratory Sciences and Services Division, Dhaka, Bangladesh; Department of Neurology (A.D., G. Chavada, H.J.W.), College of Medical, Veterinary and Life Sciences, University of Glasgow, UK; Department of Neurology (Y.Y., S. Kusunoki), Kindai University Faculty of Medicine, Osaka-Sayama City, Osaka, Japan; Department of Neurology (M.M.D.), University of Kansas Medical Center, Kansas City; Department of Neurology (W.W., N.K.), University of Vermont Medical Centre, Burlington; National Institute of Neurosciences and Hospital (Q.D.M.), Agargoan, Bangladesh; Department of Neurology (T.H.), Aarhus University Hospital; Department of Neurology (S.H.S.), Odense University Hospital and University of Southern Denmark, Odense, Denmark; Department of Neurology, Neuromuscular Unit (C.C.), Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Department of Neurology (K.B.), Groote Schuur Hospital, University of Cape Town, South Africa; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle, UK; Department of Neurology (B.v.d.B., C.J.G.), Franciscus Vlietland Hospital, Schiedam, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (S. Kuwabara), Chiba University, Japan; Department of Neurology (P.V.d.B.), Neuromuscular Reference Centre, University Hospital Saint-Luc, University of Louvain, Brussels, Belgium; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Dysimmune Neuropathies Unit, Department of Systems Medicine (G.A.M.), Tor Vergata University Hospital, Rome, Italy; Department of Medicine (N.S.), University of Malaya, Kuala Lumpur; Department of Neurology (G.G.), University Hospital of Modena, Italy; Department of Clinical Neurophysiology, Reference Centre for NMD (Y.P.), CHU Nantes, France; Department of Neurology (J.B.), Saarland University Medical School, Homburg-Saarland (previous affiliation); MVZ Pfalzklinikum (J.B.), Kusel, Germany (current affiliation); Department of Neurology (K.K., R.P.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (C.M.), Hospital Británico, Buenos Aires, Argentina; Department of Neurology (M.J.S.T.), Hospital Marques de Valdecilla, Santander; Department of Neurology (L.Q., I.I.), Hospital de la Santa Creu i Santa Pau, U.A.B. CIBERER and ERN-NMD, Barcelona, Spain; Department of Neurology (Y.W.), Affiliated Hospital of Jining Medical University, Shandong Province, China; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Clinical and Research Institute, Milan University, Rozzano, Italy; Nuffield Department of Clinical Neurosciences (S.R.), University of Oxford and Oxford University Hospitals NHS Foundation Trust, UK; Department of Neurosciences, Ophthalmology, Rehabilitation, Genetics and Maternal Sciences (A.S.), University of Genova; IRCCS San Martino Hospital (A.S.), Genova, Italy; Department of Neurology (J.P.), Hospital Clínico de Santiago, Santiago de Compostela (A Coruña), Spain; Department of Neurology (F.H.V.), Franciscus Vlietland Hospital (location: Franciscus Gasthuis), Rotterdam, the Netherlands; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (V.G.), Montefiore Medical Centre, Bronx, NY; Department of Neurology (G. Cavaletti), University Milano-Bicocca, Monza, Italy; Department of Neurology (G.G.-G.), Hospital Universitario Infanta Sofía, San Sebastián de los Reyes, Spain; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, Buenos Aires, Argentina; Department of Neurology (L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (H.D.K.), University Health Network, University of Toronto, Canada; Department of Neurology (E.D.), University Hospital of Larissa, Greece; Department of Neurology, Reference Centre for NMD (S.A.), CHU Timone, Marseille, France; Department of Neurology (A.J.v.d.K., F.E.), Amsterdam University Medical Centre, University of Amsterdam, Neuroscience Institute, Netherlands Neuromuscular Centre, Euro-NMD; Department of Neurology (P.W.W.), Haga Hospital, Den Haag; Department of Neurology (H.J.G.), Reinier de Graaf Hospital, Delft, the Netherlands; Department of Neurology (R.D.M.H.), King's College Hospital, London; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, UK; Department of Neurology (K.A.S.), University of Texas Health Science Centre at Houston; Department of Neurology (S. Karafiath), University of Utah School of Medicine, Salt Lake City; Department of Neurology (M.V.), Lahey Hospital and Medical Center, Tufts University School of Medicine, Burlington, MA; Department of Neurology (G.A.), Mental Health and Sensory Organs (NESMOS), University of Rome 'Sapienza,' Sant'Andrea Hospital, Rome, Italy; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Canada; Department of Neurology (C.G.F.), Maastricht University Medical Centre, the Netherlands; Department of Neurology (M.B.), Leeds Teaching Hospitals; Department of Neurology (R.C.R.), Addenbrooke's Hospital, Cambridge, UK; Department of Neurology (N.J.S.), University at Buffalo Jacobs School of Medicine and Biomedical Sciences, NY; Department of Neurology (R.F.), Scientific Institute San Raffaele, Milan, Italy; Department of Neurology (G.W.v.D.), Canisius Wilhelmina Hospital, Nijmegen; Department of Neurology (M.P.J.G.), Jeroen Bosch Hospital, 's-Hertogenbosch; Department of Neurology (C.S.M.S.), Leiden University Medical Centre, the Netherlands; and Department of Neurology (K.C.G.), St. Elizabeth's Medical Centre, Tufts University, School of Medicine, Boston, MA.; Verboon C; From the Departments of Neurology (A.Y.D., C.W., B.v.d.B., C.V., J.R., S.E.L., K.K., B.C.J.), Public Health (H.F.L.), and Immunology (B.C.J.), Erasmus MC, University Medical Centre Rotterdam; Department of Neurology (C.W., J.P.A.S.), Maasstad Hospital, Rotterdam, the Netherlands; Laboratory of Gut-Brain Signaling (B.I., N.P., Z.I.), Laboratory Sciences and Services Division, Dhaka, Bangladesh; Department of Neurology (A.D., G. Chavada, H.J.W.), College of Medical, Veterinary and Life Sciences, University of Glasgow, UK; Department of Neurology (Y.Y., S. Kusunoki), Kindai University Faculty of Medicine, Osaka-Sayama City, Osaka, Japan; Department of Neurology (M.M.D.), University of Kansas Medical Center, Kansas City; Department of Neurology (W.W., N.K.), University of Vermont Medical Centre, Burlington; National Institute of Neurosciences and Hospital (Q.D.M.), Agargoan, Bangladesh; Department of Neurology (T.H.), Aarhus University Hospital; Department of Neurology (S.H.S.), Odense University Hospital and University of Southern Denmark, Odense, Denmark; Department of Neurology, Neuromuscular Unit (C.C.), Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Department of Neurology (K.B.), Groote Schuur Hospital, University of Cape Town, South Africa; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle, UK; Department of Neurology (B.v.d.B., C.J.G.), Franciscus Vlietland Hospital, Schiedam, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (S. Kuwabara), Chiba University, Japan; Department of Neurology (P.V.d.B.), Neuromuscular Reference Centre, University Hospital Saint-Luc, University of Louvain, Brussels, Belgium; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Dysimmune Neuropathies Unit, Department of Systems Medicine (G.A.M.), Tor Vergata University Hospital, Rome, Italy; Department of Medicine (N.S.), University of Malaya, Kuala Lumpur; Department of Neurology (G.G.), University Hospital of Modena, Italy; Department of Clinical Neurophysiology, Reference Centre for NMD (Y.P.), CHU Nantes, France; Department of Neurology (J.B.), Saarland University Medical School, Homburg-Saarland (previous affiliation); MVZ Pfalzklinikum (J.B.), Kusel, Germany (current affiliation); Department of Neurology (K.K., R.P.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (C.M.), Hospital Británico, Buenos Aires, Argentina; Department of Neurology (M.J.S.T.), Hospital Marques de Valdecilla, Santander; Department of Neurology (L.Q., I.I.), Hospital de la Santa Creu i Santa Pau, U.A.B. CIBERER and ERN-NMD, Barcelona, Spain; Department of Neurology (Y.W.), Affiliated Hospital of Jining Medical University, Shandong Province, China; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Clinical and Research Institute, Milan University, Rozzano, Italy; Nuffield Department of Clinical Neurosciences (S.R.), University of Oxford and Oxford University Hospitals NHS Foundation Trust, UK; Department of Neurosciences, Ophthalmology, Rehabilitation, Genetics and Maternal Sciences (A.S.), University of Genova; IRCCS San Martino Hospital (A.S.), Genova, Italy; Department of Neurology (J.P.), Hospital Clínico de Santiago, Santiago de Compostela (A Coruña), Spain; Department of Neurology (F.H.V.), Franciscus Vlietland Hospital (location: Franciscus Gasthuis), Rotterdam, the Netherlands; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (V.G.), Montefiore Medical Centre, Bronx, NY; Department of Neurology (G. Cavaletti), University Milano-Bicocca, Monza, Italy; Department of Neurology (G.G.-G.), Hospital Universitario Infanta Sofía, San Sebastián de los Reyes, Spain; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, Buenos Aires, Argentina; Department of Neurology (L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (H.D.K.), University Health Network, University of Toronto, Canada; Department of Neurology (E.D.), University Hospital of Larissa, Greece; Department of Neurology, Reference Centre for NMD (S.A.), CHU Timone, Marseille, France; Department of Neurology (A.J.v.d.K., F.E.), Amsterdam University Medical Centre, University of Amsterdam, Neuroscience Institute, Netherlands Neuromuscular Centre, Euro-NMD; Department of Neurology (P.W.W.), Haga Hospital, Den Haag; Department of Neurology (H.J.G.), Reinier de Graaf Hospital, Delft, the Netherlands; Department of Neurology (R.D.M.H.), King's College Hospital, London; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, UK; Department of Neurology (K.A.S.), University of Texas Health Science Centre at Houston; Department of Neurology (S. Karafiath), University of Utah School of Medicine, Salt Lake City; Department of Neurology (M.V.), Lahey Hospital and Medical Center, Tufts University School of Medicine, Burlington, MA; Department of Neurology (G.A.), Mental Health and Sensory Organs (NESMOS), University of Rome 'Sapienza,' Sant'Andrea Hospital, Rome, Italy; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Canada; Department of Neurology (C.G.F.), Maastricht University Medical Centre, the Netherlands; Department of Neurology (M.B.), Leeds Teaching Hospitals; Department of Neurology (R.C.R.), Addenbrooke's Hospital, Cambridge, UK; Department of Neurology (N.J.S.), University at Buffalo Jacobs School of Medicine and Biomedical Sciences, NY; Department of Neurology (R.F.), Scientific Institute San Raffaele, Milan, Italy; Department of Neurology (G.W.v.D.), Canisius Wilhelmina Hospital, Nijmegen; Department of Neurology (M.P.J.G.), Jeroen Bosch Hospital, 's-Hertogenbosch; Department of Neurology (C.S.M.S.), Leiden University Medical Centre, the Netherlands; and Department of Neurology (K.C.G.), St. Elizabeth's Medical Centre, Tufts University, School of Medicine, Boston, MA.; Roodbol J; From the Departments of Neurology (A.Y.D., C.W., B.v.d.B., C.V., J.R., S.E.L., K.K., B.C.J.), Public Health (H.F.L.), and Immunology (B.C.J.), Erasmus MC, University Medical Centre Rotterdam; Department of Neurology (C.W., J.P.A.S.), Maasstad Hospital, Rotterdam, the Netherlands; Laboratory of Gut-Brain Signaling (B.I., N.P., Z.I.), Laboratory Sciences and Services Division, Dhaka, Bangladesh; Department of Neurology (A.D., G. Chavada, H.J.W.), College of Medical, Veterinary and Life Sciences, University of Glasgow, UK; Department of Neurology (Y.Y., S. Kusunoki), Kindai University Faculty of Medicine, Osaka-Sayama City, Osaka, Japan; Department of Neurology (M.M.D.), University of Kansas Medical Center, Kansas City; Department of Neurology (W.W., N.K.), University of Vermont Medical Centre, Burlington; National Institute of Neurosciences and Hospital (Q.D.M.), Agargoan, Bangladesh; Department of Neurology (T.H.), Aarhus University Hospital; Department of Neurology (S.H.S.), Odense University Hospital and University of Southern Denmark, Odense, Denmark; Department of Neurology, Neuromuscular Unit (C.C.), Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Department of Neurology (K.B.), Groote Schuur Hospital, University of Cape Town, South Africa; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle, UK; Department of Neurology (B.v.d.B., C.J.G.), Franciscus Vlietland Hospital, Schiedam, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (S. Kuwabara), Chiba University, Japan; Department of Neurology (P.V.d.B.), Neuromuscular Reference Centre, University Hospital Saint-Luc, University of Louvain, Brussels, Belgium; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Dysimmune Neuropathies Unit, Department of Systems Medicine (G.A.M.), Tor Vergata University Hospital, Rome, Italy; Department of Medicine (N.S.), University of Malaya, Kuala Lumpur; Department of Neurology (G.G.), University Hospital of Modena, Italy; Department of Clinical Neurophysiology, Reference Centre for NMD (Y.P.), CHU Nantes, France; Department of Neurology (J.B.), Saarland University Medical School, Homburg-Saarland (previous affiliation); MVZ Pfalzklinikum (J.B.), Kusel, Germany (current affiliation); Department of Neurology (K.K., R.P.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (C.M.), Hospital Británico, Buenos Aires, Argentina; Department of Neurology (M.J.S.T.), Hospital Marques de Valdecilla, Santander; Department of Neurology (L.Q., I.I.), Hospital de la Santa Creu i Santa Pau, U.A.B. CIBERER and ERN-NMD, Barcelona, Spain; Department of Neurology (Y.W.), Affiliated Hospital of Jining Medical University, Shandong Province, China; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Clinical and Research Institute, Milan University, Rozzano, Italy; Nuffield Department of Clinical Neurosciences (S.R.), University of Oxford and Oxford University Hospitals NHS Foundation Trust, UK; Department of Neurosciences, Ophthalmology, Rehabilitation, Genetics and Maternal Sciences (A.S.), University of Genova; IRCCS San Martino Hospital (A.S.), Genova, Italy; Department of Neurology (J.P.), Hospital Clínico de Santiago, Santiago de Compostela (A Coruña), Spain; Department of Neurology (F.H.V.), Franciscus Vlietland Hospital (location: Franciscus Gasthuis), Rotterdam, the Netherlands; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (V.G.), Montefiore Medical Centre, Bronx, NY; Department of Neurology (G. Cavaletti), University Milano-Bicocca, Monza, Italy; Department of Neurology (G.G.-G.), Hospital Universitario Infanta Sofía, San Sebastián de los Reyes, Spain; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, Buenos Aires, Argentina; Department of Neurology (L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (H.D.K.), University Health Network, University of Toronto, Canada; Department of Neurology (E.D.), University Hospital of Larissa, Greece; Department of Neurology, Reference Centre for NMD (S.A.), CHU Timone, Marseille, France; Department of Neurology (A.J.v.d.K., F.E.), Amsterdam University Medical Centre, University of Amsterdam, Neuroscience Institute, Netherlands Neuromuscular Centre, Euro-NMD; Department of Neurology (P.W.W.), Haga Hospital, Den Haag; Department of Neurology (H.J.G.), Reinier de Graaf Hospital, Delft, the Netherlands; Department of Neurology (R.D.M.H.), King's College Hospital, London; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, UK; Department of Neurology (K.A.S.), University of Texas Health Science Centre at Houston; Department of Neurology (S. Karafiath), University of Utah School of Medicine, Salt Lake City; Department of Neurology (M.V.), Lahey Hospital and Medical Center, Tufts University School of Medicine, Burlington, MA; Department of Neurology (G.A.), Mental Health and Sensory Organs (NESMOS), University of Rome 'Sapienza,' Sant'Andrea Hospital, Rome, Italy; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Canada; Department of Neurology (C.G.F.), Maastricht University Medical Centre, the Netherlands; Department of Neurology (M.B.), Leeds Teaching Hospitals; Department of Neurology (R.C.R.), Addenbrooke's Hospital, Cambridge, UK; Department of Neurology (N.J.S.), University at Buffalo Jacobs School of Medicine and Biomedical Sciences, NY; Department of Neurology (R.F.), Scientific Institute San Raffaele, Milan, Italy; Department of Neurology (G.W.v.D.), Canisius Wilhelmina Hospital, Nijmegen; Department of Neurology (M.P.J.G.), Jeroen Bosch Hospital, 's-Hertogenbosch; Department of Neurology (C.S.M.S.), Leiden University Medical Centre, the Netherlands; and Department of Neurology (K.C.G.), St. Elizabeth's Medical Centre, Tufts University, School of Medicine, Boston, MA.; Leonhard SE; From the Departments of Neurology (A.Y.D., C.W., B.v.d.B., C.V., J.R., S.E.L., K.K., B.C.J.), Public Health (H.F.L.), and Immunology (B.C.J.), Erasmus MC, University Medical Centre Rotterdam; Department of Neurology (C.W., J.P.A.S.), Maasstad Hospital, Rotterdam, the Netherlands; Laboratory of Gut-Brain Signaling (B.I., N.P., Z.I.), Laboratory Sciences and Services Division, Dhaka, Bangladesh; Department of Neurology (A.D., G. Chavada, H.J.W.), College of Medical, Veterinary and Life Sciences, University of Glasgow, UK; Department of Neurology (Y.Y., S. Kusunoki), Kindai University Faculty of Medicine, Osaka-Sayama City, Osaka, Japan; Department of Neurology (M.M.D.), University of Kansas Medical Center, Kansas City; Department of Neurology (W.W., N.K.), University of Vermont Medical Centre, Burlington; National Institute of Neurosciences and Hospital (Q.D.M.), Agargoan, Bangladesh; Department of Neurology (T.H.), Aarhus University Hospital; Department of Neurology (S.H.S.), Odense University Hospital and University of Southern Denmark, Odense, Denmark; Department of Neurology, Neuromuscular Unit (C.C.), Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Department of Neurology (K.B.), Groote Schuur Hospital, University of Cape Town, South Africa; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle, UK; Department of Neurology (B.v.d.B., C.J.G.), Franciscus Vlietland Hospital, Schiedam, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (S. Kuwabara), Chiba University, Japan; Department of Neurology (P.V.d.B.), Neuromuscular Reference Centre, University Hospital Saint-Luc, University of Louvain, Brussels, Belgium; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Dysimmune Neuropathies Unit, Department of Systems Medicine (G.A.M.), Tor Vergata University Hospital, Rome, Italy; Department of Medicine (N.S.), University of Malaya, Kuala Lumpur; Department of Neurology (G.G.), University Hospital of Modena, Italy; Department of Clinical Neurophysiology, Reference Centre for NMD (Y.P.), CHU Nantes, France; Department of Neurology (J.B.), Saarland University Medical School, Homburg-Saarland (previous affiliation); MVZ Pfalzklinikum (J.B.), Kusel, Germany (current affiliation); Department of Neurology (K.K., R.P.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (C.M.), Hospital Británico, Buenos Aires, Argentina; Department of Neurology (M.J.S.T.), Hospital Marques de Valdecilla, Santander; Department of Neurology (L.Q., I.I.), Hospital de la Santa Creu i Santa Pau, U.A.B. CIBERER and ERN-NMD, Barcelona, Spain; Department of Neurology (Y.W.), Affiliated Hospital of Jining Medical University, Shandong Province, China; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Clinical and Research Institute, Milan University, Rozzano, Italy; Nuffield Department of Clinical Neurosciences (S.R.), University of Oxford and Oxford University Hospitals NHS Foundation Trust, UK; Department of Neurosciences, Ophthalmology, Rehabilitation, Genetics and Maternal Sciences (A.S.), University of Genova; IRCCS San Martino Hospital (A.S.), Genova, Italy; Department of Neurology (J.P.), Hospital Clínico de Santiago, Santiago de Compostela (A Coruña), Spain; Department of Neurology (F.H.V.), Franciscus Vlietland Hospital (location: Franciscus Gasthuis), Rotterdam, the Netherlands; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (V.G.), Montefiore Medical Centre, Bronx, NY; Department of Neurology (G. Cavaletti), University Milano-Bicocca, Monza, Italy; Department of Neurology (G.G.-G.), Hospital Universitario Infanta Sofía, San Sebastián de los Reyes, Spain; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, Buenos Aires, Argentina; Department of Neurology (L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (H.D.K.), University Health Network, University of Toronto, Canada; Department of Neurology (E.D.), University Hospital of Larissa, Greece; Department of Neurology, Reference Centre for NMD (S.A.), CHU Timone, Marseille, France; Department of Neurology (A.J.v.d.K., F.E.), Amsterdam University Medical Centre, University of Amsterdam, Neuroscience Institute, Netherlands Neuromuscular Centre, Euro-NMD; Department of Neurology (P.W.W.), Haga Hospital, Den Haag; Department of Neurology (H.J.G.), Reinier de Graaf Hospital, Delft, the Netherlands; Department of Neurology (R.D.M.H.), King's College Hospital, London; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, UK; Department of Neurology (K.A.S.), University of Texas Health Science Centre at Houston; Department of Neurology (S. Karafiath), University of Utah School of Medicine, Salt Lake City; Department of Neurology (M.V.), Lahey Hospital and Medical Center, Tufts University School of Medicine, Burlington, MA; Department of Neurology (G.A.), Mental Health and Sensory Organs (NESMOS), University of Rome 'Sapienza,' Sant'Andrea Hospital, Rome, Italy; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Canada; Department of Neurology (C.G.F.), Maastricht University Medical Centre, the Netherlands; Department of Neurology (M.B.), Leeds Teaching Hospitals; Department of Neurology (R.C.R.), Addenbrooke's Hospital, Cambridge, UK; Department of Neurology (N.J.S.), University at Buffalo Jacobs School of Medicine and Biomedical Sciences, NY; Department of Neurology (R.F.), Scientific Institute San Raffaele, Milan, Italy; Department of Neurology (G.W.v.D.), Canisius Wilhelmina Hospital, Nijmegen; Department of Neurology (M.P.J.G.), Jeroen Bosch Hospital, 's-Hertogenbosch; Department of Neurology (C.S.M.S.), Leiden University Medical Centre, the Netherlands; and Department of Neurology (K.C.G.), St. Elizabeth's Medical Centre, Tufts University, School of Medicine, Boston, MA.; Benedetti L; From the Departments of Neurology (A.Y.D., C.W., B.v.d.B., C.V., J.R., S.E.L., K.K., B.C.J.), Public Health (H.F.L.), and Immunology (B.C.J.), Erasmus MC, University Medical Centre Rotterdam; Department of Neurology (C.W., J.P.A.S.), Maasstad Hospital, Rotterdam, the Netherlands; Laboratory of Gut-Brain Signaling (B.I., N.P., Z.I.), Laboratory Sciences and Services Division, Dhaka, Bangladesh; Department of Neurology (A.D., G. Chavada, H.J.W.), College of Medical, Veterinary and Life Sciences, University of Glasgow, UK; Department of Neurology (Y.Y., S. Kusunoki), Kindai University Faculty of Medicine, Osaka-Sayama City, Osaka, Japan; Department of Neurology (M.M.D.), University of Kansas Medical Center, Kansas City; Department of Neurology (W.W., N.K.), University of Vermont Medical Centre, Burlington; National Institute of Neurosciences and Hospital (Q.D.M.), Agargoan, Bangladesh; Department of Neurology (T.H.), Aarhus University Hospital; Department of Neurology (S.H.S.), Odense University Hospital and University of Southern Denmark, Odense, Denmark; Department of Neurology, Neuromuscular Unit (C.C.), Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Department of Neurology (K.B.), Groote Schuur Hospital, University of Cape Town, South Africa; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle, UK; Department of Neurology (B.v.d.B., C.J.G.), Franciscus Vlietland Hospital, Schiedam, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (S. Kuwabara), Chiba University, Japan; Department of Neurology (P.V.d.B.), Neuromuscular Reference Centre, University Hospital Saint-Luc, University of Louvain, Brussels, Belgium; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Dysimmune Neuropathies Unit, Department of Systems Medicine (G.A.M.), Tor Vergata University Hospital, Rome, Italy; Department of Medicine (N.S.), University of Malaya, Kuala Lumpur; Department of Neurology (G.G.), University Hospital of Modena, Italy; Department of Clinical Neurophysiology, Reference Centre for NMD (Y.P.), CHU Nantes, France; Department of Neurology (J.B.), Saarland University Medical School, Homburg-Saarland (previous affiliation); MVZ Pfalzklinikum (J.B.), Kusel, Germany (current affiliation); Department of Neurology (K.K., R.P.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (C.M.), Hospital Británico, Buenos Aires, Argentina; Department of Neurology (M.J.S.T.), Hospital Marques de Valdecilla, Santander; Department of Neurology (L.Q., I.I.), Hospital de la Santa Creu i Santa Pau, U.A.B. CIBERER and ERN-NMD, Barcelona, Spain; Department of Neurology (Y.W.), Affiliated Hospital of Jining Medical University, Shandong Province, China; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Clinical and Research Institute, Milan University, Rozzano, Italy; Nuffield Department of Clinical Neurosciences (S.R.), University of Oxford and Oxford University Hospitals NHS Foundation Trust, UK; Department of Neurosciences, Ophthalmology, Rehabilitation, Genetics and Maternal Sciences (A.S.), University of Genova; IRCCS San Martino Hospital (A.S.), Genova, Italy; Department of Neurology (J.P.), Hospital Clínico de Santiago, Santiago de Compostela (A Coruña), Spain; Department of Neurology (F.H.V.), Franciscus Vlietland Hospital (location: Franciscus Gasthuis), Rotterdam, the Netherlands; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (V.G.), Montefiore Medical Centre, Bronx, NY; Department of Neurology (G. Cavaletti), University Milano-Bicocca, Monza, Italy; Department of Neurology (G.G.-G.), Hospital Universitario Infanta Sofía, San Sebastián de los Reyes, Spain; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, Buenos Aires, Argentina; Department of Neurology (L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (H.D.K.), University Health Network, University of Toronto, Canada; Department of Neurology (E.D.), University Hospital of Larissa, Greece; Department of Neurology, Reference Centre for NMD (S.A.), CHU Timone, Marseille, France; Department of Neurology (A.J.v.d.K., F.E.), Amsterdam University Medical Centre, University of Amsterdam, Neuroscience Institute, Netherlands Neuromuscular Centre, Euro-NMD; Department of Neurology (P.W.W.), Haga Hospital, Den Haag; Department of Neurology (H.J.G.), Reinier de Graaf Hospital, Delft, the Netherlands; Department of Neurology (R.D.M.H.), King's College Hospital, London; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, UK; Department of Neurology (K.A.S.), University of Texas Health Science Centre at Houston; Department of Neurology (S. Karafiath), University of Utah School of Medicine, Salt Lake City; Department of Neurology (M.V.), Lahey Hospital and Medical Center, Tufts University School of Medicine, Burlington, MA; Department of Neurology (G.A.), Mental Health and Sensory Organs (NESMOS), University of Rome 'Sapienza,' Sant'Andrea Hospital, Rome, Italy; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Canada; Department of Neurology (C.G.F.), Maastricht University Medical Centre, the Netherlands; Department of Neurology (M.B.), Leeds Teaching Hospitals; Department of Neurology (R.C.R.), Addenbrooke's Hospital, Cambridge, UK; Department of Neurology (N.J.S.), University at Buffalo Jacobs School of Medicine and Biomedical Sciences, NY; Department of Neurology (R.F.), Scientific Institute San Raffaele, Milan, Italy; Department of Neurology (G.W.v.D.), Canisius Wilhelmina Hospital, Nijmegen; Department of Neurology (M.P.J.G.), Jeroen Bosch Hospital, 's-Hertogenbosch; Department of Neurology (C.S.M.S.), Leiden University Medical Centre, the Netherlands; and Department of Neurology (K.C.G.), St. Elizabeth's Medical Centre, Tufts University, School of Medicine, Boston, MA.; Kuwabara S; From the Departments of Neurology (A.Y.D., C.W., B.v.d.B., C.V., J.R., S.E.L., K.K., B.C.J.), Public Health (H.F.L.), and Immunology (B.C.J.), Erasmus MC, University Medical Centre Rotterdam; Department of Neurology (C.W., J.P.A.S.), Maasstad Hospital, Rotterdam, the Netherlands; Laboratory of Gut-Brain Signaling (B.I., N.P., Z.I.), Laboratory Sciences and Services Division, Dhaka, Bangladesh; Department of Neurology (A.D., G. Chavada, H.J.W.), College of Medical, Veterinary and Life Sciences, University of Glasgow, UK; Department of Neurology (Y.Y., S. Kusunoki), Kindai University Faculty of Medicine, Osaka-Sayama City, Osaka, Japan; Department of Neurology (M.M.D.), University of Kansas Medical Center, Kansas City; Department of Neurology (W.W., N.K.), University of Vermont Medical Centre, Burlington; National Institute of Neurosciences and Hospital (Q.D.M.), Agargoan, Bangladesh; Department of Neurology (T.H.), Aarhus University Hospital; Department of Neurology (S.H.S.), Odense University Hospital and University of Southern Denmark, Odense, Denmark; Department of Neurology, Neuromuscular Unit (C.C.), Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Department of Neurology (K.B.), Groote Schuur Hospital, University of Cape Town, South Africa; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle, UK; Department of Neurology (B.v.d.B., C.J.G.), Franciscus Vlietland Hospital, Schiedam, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (S. Kuwabara), Chiba University, Japan; Department of Neurology (P.V.d.B.), Neuromuscular Reference Centre, University Hospital Saint-Luc, University of Louvain, Brussels, Belgium; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Dysimmune Neuropathies Unit, Department of Systems Medicine (G.A.M.), Tor Vergata University Hospital, Rome, Italy; Department of Medicine (N.S.), University of Malaya, Kuala Lumpur; Department of Neurology (G.G.), University Hospital of Modena, Italy; Department of Clinical Neurophysiology, Reference Centre for NMD (Y.P.), CHU Nantes, France; Department of Neurology (J.B.), Saarland University Medical School, Homburg-Saarland (previous affiliation); MVZ Pfalzklinikum (J.B.), Kusel, Germany (current affiliation); Department of Neurology (K.K., R.P.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (C.M.), Hospital Británico, Buenos Aires, Argentina; Department of Neurology (M.J.S.T.), Hospital Marques de Valdecilla, Santander; Department of Neurology (L.Q., I.I.), Hospital de la Santa Creu i Santa Pau, U.A.B. CIBERER and ERN-NMD, Barcelona, Spain; Department of Neurology (Y.W.), Affiliated Hospital of Jining Medical University, Shandong Province, China; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Clinical and Research Institute, Milan University, Rozzano, Italy; Nuffield Department of Clinical Neurosciences (S.R.), University of Oxford and Oxford University Hospitals NHS Foundation Trust, UK; Department of Neurosciences, Ophthalmology, Rehabilitation, Genetics and Maternal Sciences (A.S.), University of Genova; IRCCS San Martino Hospital (A.S.), Genova, Italy; Department of Neurology (J.P.), Hospital Clínico de Santiago, Santiago de Compostela (A Coruña), Spain; Department of Neurology (F.H.V.), Franciscus Vlietland Hospital (location: Franciscus Gasthuis), Rotterdam, the Netherlands; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (V.G.), Montefiore Medical Centre, Bronx, NY; Department of Neurology (G. Cavaletti), University Milano-Bicocca, Monza, Italy; Department of Neurology (G.G.-G.), Hospital Universitario Infanta Sofía, San Sebastián de los Reyes, Spain; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, Buenos Aires, Argentina; Department of Neurology (L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (H.D.K.), University Health Network, University of Toronto, Canada; Department of Neurology (E.D.), University Hospital of Larissa, Greece; Department of Neurology, Reference Centre for NMD (S.A.), CHU Timone, Marseille, France; Department of Neurology (A.J.v.d.K., F.E.), Amsterdam University Medical Centre, University of Amsterdam, Neuroscience Institute, Netherlands Neuromuscular Centre, Euro-NMD; Department of Neurology (P.W.W.), Haga Hospital, Den Haag; Department of Neurology (H.J.G.), Reinier de Graaf Hospital, Delft, the Netherlands; Department of Neurology (R.D.M.H.), King's College Hospital, London; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, UK; Department of Neurology (K.A.S.), University of Texas Health Science Centre at Houston; Department of Neurology (S. Karafiath), University of Utah School of Medicine, Salt Lake City; Department of Neurology (M.V.), Lahey Hospital and Medical Center, Tufts University School of Medicine, Burlington, MA; Department of Neurology (G.A.), Mental Health and Sensory Organs (NESMOS), University of Rome 'Sapienza,' Sant'Andrea Hospital, Rome, Italy; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Canada; Department of Neurology (C.G.F.), Maastricht University Medical Centre, the Netherlands; Department of Neurology (M.B.), Leeds Teaching Hospitals; Department of Neurology (R.C.R.), Addenbrooke's Hospital, Cambridge, UK; Department of Neurology (N.J.S.), University at Buffalo Jacobs School of Medicine and Biomedical Sciences, NY; Department of Neurology (R.F.), Scientific Institute San Raffaele, Milan, Italy; Department of Neurology (G.W.v.D.), Canisius Wilhelmina Hospital, Nijmegen; Department of Neurology (M.P.J.G.), Jeroen Bosch Hospital, 's-Hertogenbosch; Department of Neurology (C.S.M.S.), Leiden University Medical Centre, the Netherlands; and Department of Neurology (K.C.G.), St. Elizabeth's Medical Centre, Tufts University, School of Medicine, Boston, MA.; Van den Bergh P; From the Departments of Neurology (A.Y.D., C.W., B.v.d.B., C.V., J.R., S.E.L., K.K., B.C.J.), Public Health (H.F.L.), and Immunology (B.C.J.), Erasmus MC, University Medical Centre Rotterdam; Department of Neurology (C.W., J.P.A.S.), Maasstad Hospital, Rotterdam, the Netherlands; Laboratory of Gut-Brain Signaling (B.I., N.P., Z.I.), Laboratory Sciences and Services Division, Dhaka, Bangladesh; Department of Neurology (A.D., G. Chavada, H.J.W.), College of Medical, Veterinary and Life Sciences, University of Glasgow, UK; Department of Neurology (Y.Y., S. Kusunoki), Kindai University Faculty of Medicine, Osaka-Sayama City, Osaka, Japan; Department of Neurology (M.M.D.), University of Kansas Medical Center, Kansas City; Department of Neurology (W.W., N.K.), University of Vermont Medical Centre, Burlington; National Institute of Neurosciences and Hospital (Q.D.M.), Agargoan, Bangladesh; Department of Neurology (T.H.), Aarhus University Hospital; Department of Neurology (S.H.S.), Odense University Hospital and University of Southern Denmark, Odense, Denmark; Department of Neurology, Neuromuscular Unit (C.C.), Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Department of Neurology (K.B.), Groote Schuur Hospital, University of Cape Town, South Africa; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle, UK; Department of Neurology (B.v.d.B., C.J.G.), Franciscus Vlietland Hospital, Schiedam, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (S. Kuwabara), Chiba University, Japan; Department of Neurology (P.V.d.B.), Neuromuscular Reference Centre, University Hospital Saint-Luc, University of Louvain, Brussels, Belgium; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Dysimmune Neuropathies Unit, Department of Systems Medicine (G.A.M.), Tor Vergata University Hospital, Rome, Italy; Department of Medicine (N.S.), University of Malaya, Kuala Lumpur; Department of Neurology (G.G.), University Hospital of Modena, Italy; Department of Clinical Neurophysiology, Reference Centre for NMD (Y.P.), CHU Nantes, France; Department of Neurology (J.B.), Saarland University Medical School, Homburg-Saarland (previous affiliation); MVZ Pfalzklinikum (J.B.), Kusel, Germany (current affiliation); Department of Neurology (K.K., R.P.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (C.M.), Hospital Británico, Buenos Aires, Argentina; Department of Neurology (M.J.S.T.), Hospital Marques de Valdecilla, Santander; Department of Neurology (L.Q., I.I.), Hospital de la Santa Creu i Santa Pau, U.A.B. CIBERER and ERN-NMD, Barcelona, Spain; Department of Neurology (Y.W.), Affiliated Hospital of Jining Medical University, Shandong Province, China; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Clinical and Research Institute, Milan University, Rozzano, Italy; Nuffield Department of Clinical Neurosciences (S.R.), University of Oxford and Oxford University Hospitals NHS Foundation Trust, UK; Department of Neurosciences, Ophthalmology, Rehabilitation, Genetics and Maternal Sciences (A.S.), University of Genova; IRCCS San Martino Hospital (A.S.), Genova, Italy; Department of Neurology (J.P.), Hospital Clínico de Santiago, Santiago de Compostela (A Coruña), Spain; Department of Neurology (F.H.V.), Franciscus Vlietland Hospital (location: Franciscus Gasthuis), Rotterdam, the Netherlands; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (V.G.), Montefiore Medical Centre, Bronx, NY; Department of Neurology (G. Cavaletti), University Milano-Bicocca, Monza, Italy; Department of Neurology (G.G.-G.), Hospital Universitario Infanta Sofía, San Sebastián de los Reyes, Spain; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, Buenos Aires, Argentina; Department of Neurology (L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (H.D.K.), University Health Network, University of Toronto, Canada; Department of Neurology (E.D.), University Hospital of Larissa, Greece; Department of Neurology, Reference Centre for NMD (S.A.), CHU Timone, Marseille, France; Department of Neurology (A.J.v.d.K., F.E.), Amsterdam University Medical Centre, University of Amsterdam, Neuroscience Institute, Netherlands Neuromuscular Centre, Euro-NMD; Department of Neurology (P.W.W.), Haga Hospital, Den Haag; Department of Neurology (H.J.G.), Reinier de Graaf Hospital, Delft, the Netherlands; Department of Neurology (R.D.M.H.), King's College Hospital, London; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, UK; Department of Neurology (K.A.S.), University of Texas Health Science Centre at Houston; Department of Neurology (S. Karafiath), University of Utah School of Medicine, Salt Lake City; Department of Neurology (M.V.), Lahey Hospital and Medical Center, Tufts University School of Medicine, Burlington, MA; Department of Neurology (G.A.), Mental Health and Sensory Organs (NESMOS), University of Rome 'Sapienza,' Sant'Andrea Hospital, Rome, Italy; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Canada; Department of Neurology (C.G.F.), Maastricht University Medical Centre, the Netherlands; Department of Neurology (M.B.), Leeds Teaching Hospitals; Department of Neurology (R.C.R.), Addenbrooke's Hospital, Cambridge, UK; Department of Neurology (N.J.S.), University at Buffalo Jacobs School of Medicine and Biomedical Sciences, NY; Department of Neurology (R.F.), Scientific Institute San Raffaele, Milan, Italy; Department of Neurology (G.W.v.D.), Canisius Wilhelmina Hospital, Nijmegen; Department of Neurology (M.P.J.G.), Jeroen Bosch Hospital, 's-Hertogenbosch; Department of Neurology (C.S.M.S.), Leiden University Medical Centre, the Netherlands; and Department of Neurology (K.C.G.), St. Elizabeth's Medical Centre, Tufts University, School of Medicine, Boston, MA.; Monges S; From the Departments of Neurology (A.Y.D., C.W., B.v.d.B., C.V., J.R., S.E.L., K.K., B.C.J.), Public Health (H.F.L.), and Immunology (B.C.J.), Erasmus MC, University Medical Centre Rotterdam; Department of Neurology (C.W., J.P.A.S.), Maasstad Hospital, Rotterdam, the Netherlands; Laboratory of Gut-Brain Signaling (B.I., N.P., Z.I.), Laboratory Sciences and Services Division, Dhaka, Bangladesh; Department of Neurology (A.D., G. Chavada, H.J.W.), College of Medical, Veterinary and Life Sciences, University of Glasgow, UK; Department of Neurology (Y.Y., S. Kusunoki), Kindai University Faculty of Medicine, Osaka-Sayama City, Osaka, Japan; Department of Neurology (M.M.D.), University of Kansas Medical Center, Kansas City; Department of Neurology (W.W., N.K.), University of Vermont Medical Centre, Burlington; National Institute of Neurosciences and Hospital (Q.D.M.), Agargoan, Bangladesh; Department of Neurology (T.H.), Aarhus University Hospital; Department of Neurology (S.H.S.), Odense University Hospital and University of Southern Denmark, Odense, Denmark; Department of Neurology, Neuromuscular Unit (C.C.), Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Department of Neurology (K.B.), Groote Schuur Hospital, University of Cape Town, South Africa; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle, UK; Department of Neurology (B.v.d.B., C.J.G.), Franciscus Vlietland Hospital, Schiedam, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (S. Kuwabara), Chiba University, Japan; Department of Neurology (P.V.d.B.), Neuromuscular Reference Centre, University Hospital Saint-Luc, University of Louvain, Brussels, Belgium; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Dysimmune Neuropathies Unit, Department of Systems Medicine (G.A.M.), Tor Vergata University Hospital, Rome, Italy; Department of Medicine (N.S.), University of Malaya, Kuala Lumpur; Department of Neurology (G.G.), University Hospital of Modena, Italy; Department of Clinical Neurophysiology, Reference Centre for NMD (Y.P.), CHU Nantes, France; Department of Neurology (J.B.), Saarland University Medical School, Homburg-Saarland (previous affiliation); MVZ Pfalzklinikum (J.B.), Kusel, Germany (current affiliation); Department of Neurology (K.K., R.P.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (C.M.), Hospital Británico, Buenos Aires, Argentina; Department of Neurology (M.J.S.T.), Hospital Marques de Valdecilla, Santander; Department of Neurology (L.Q., I.I.), Hospital de la Santa Creu i Santa Pau, U.A.B. CIBERER and ERN-NMD, Barcelona, Spain; Department of Neurology (Y.W.), Affiliated Hospital of Jining Medical University, Shandong Province, China; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Clinical and Research Institute, Milan University, Rozzano, Italy; Nuffield Department of Clinical Neurosciences (S.R.), University of Oxford and Oxford University Hospitals NHS Foundation Trust, UK; Department of Neurosciences, Ophthalmology, Rehabilitation, Genetics and Maternal Sciences (A.S.), University of Genova; IRCCS San Martino Hospital (A.S.), Genova, Italy; Department of Neurology (J.P.), Hospital Clínico de Santiago, Santiago de Compostela (A Coruña), Spain; Department of Neurology (F.H.V.), Franciscus Vlietland Hospital (location: Franciscus Gasthuis), Rotterdam, the Netherlands; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (V.G.), Montefiore Medical Centre, Bronx, NY; Department of Neurology (G. Cavaletti), University Milano-Bicocca, Monza, Italy; Department of Neurology (G.G.-G.), Hospital Universitario Infanta Sofía, San Sebastián de los Reyes, Spain; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, Buenos Aires, Argentina; Department of Neurology (L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (H.D.K.), University Health Network, University of Toronto, Canada; Department of Neurology (E.D.), University Hospital of Larissa, Greece; Department of Neurology, Reference Centre for NMD (S.A.), CHU Timone, Marseille, France; Department of Neurology (A.J.v.d.K., F.E.), Amsterdam University Medical Centre, University of Amsterdam, Neuroscience Institute, Netherlands Neuromuscular Centre, Euro-NMD; Department of Neurology (P.W.W.), Haga Hospital, Den Haag; Department of Neurology (H.J.G.), Reinier de Graaf Hospital, Delft, the Netherlands; Department of Neurology (R.D.M.H.), King's College Hospital, London; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, UK; Department of Neurology (K.A.S.), University of Texas Health Science Centre at Houston; Department of Neurology (S. Karafiath), University of Utah School of Medicine, Salt Lake City; Department of Neurology (M.V.), Lahey Hospital and Medical Center, Tufts University School of Medicine, Burlington, MA; Department of Neurology (G.A.), Mental Health and Sensory Organs (NESMOS), University of Rome 'Sapienza,' Sant'Andrea Hospital, Rome, Italy; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Canada; Department of Neurology (C.G.F.), Maastricht University Medical Centre, the Netherlands; Department of Neurology (M.B.), Leeds Teaching Hospitals; Department of Neurology (R.C.R.), Addenbrooke's Hospital, Cambridge, UK; Department of Neurology (N.J.S.), University at Buffalo Jacobs School of Medicine and Biomedical Sciences, NY; Department of Neurology (R.F.), Scientific Institute San Raffaele, Milan, Italy; Department of Neurology (G.W.v.D.), Canisius Wilhelmina Hospital, Nijmegen; Department of Neurology (M.P.J.G.), Jeroen Bosch Hospital, 's-Hertogenbosch; Department of Neurology (C.S.M.S.), Leiden University Medical Centre, the Netherlands; and Department of Neurology (K.C.G.), St. Elizabeth's Medical Centre, Tufts University, School of Medicine, Boston, MA.; Marfia GA; From the Departments of Neurology (A.Y.D., C.W., B.v.d.B., C.V., J.R., S.E.L., K.K., B.C.J.), Public Health (H.F.L.), and Immunology (B.C.J.), Erasmus MC, University Medical Centre Rotterdam; Department of Neurology (C.W., J.P.A.S.), Maasstad Hospital, Rotterdam, the Netherlands; Laboratory of Gut-Brain Signaling (B.I., N.P., Z.I.), Laboratory Sciences and Services Division, Dhaka, Bangladesh; Department of Neurology (A.D., G. Chavada, H.J.W.), College of Medical, Veterinary and Life Sciences, University of Glasgow, UK; Department of Neurology (Y.Y., S. Kusunoki), Kindai University Faculty of Medicine, Osaka-Sayama City, Osaka, Japan; Department of Neurology (M.M.D.), University of Kansas Medical Center, Kansas City; Department of Neurology (W.W., N.K.), University of Vermont Medical Centre, Burlington; National Institute of Neurosciences and Hospital (Q.D.M.), Agargoan, Bangladesh; Department of Neurology (T.H.), Aarhus University Hospital; Department of Neurology (S.H.S.), Odense University Hospital and University of Southern Denmark, Odense, Denmark; Department of Neurology, Neuromuscular Unit (C.C.), Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Department of Neurology (K.B.), Groote Schuur Hospital, University of Cape Town, South Africa; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle, UK; Department of Neurology (B.v.d.B., C.J.G.), Franciscus Vlietland Hospital, Schiedam, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (S. Kuwabara), Chiba University, Japan; Department of Neurology (P.V.d.B.), Neuromuscular Reference Centre, University Hospital Saint-Luc, University of Louvain, Brussels, Belgium; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Dysimmune Neuropathies Unit, Department of Systems Medicine (G.A.M.), Tor Vergata University Hospital, Rome, Italy; Department of Medicine (N.S.), University of Malaya, Kuala Lumpur; Department of Neurology (G.G.), University Hospital of Modena, Italy; Department of Clinical Neurophysiology, Reference Centre for NMD (Y.P.), CHU Nantes, France; Department of Neurology (J.B.), Saarland University Medical School, Homburg-Saarland (previous affiliation); MVZ Pfalzklinikum (J.B.), Kusel, Germany (current affiliation); Department of Neurology (K.K., R.P.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (C.M.), Hospital Británico, Buenos Aires, Argentina; Department of Neurology (M.J.S.T.), Hospital Marques de Valdecilla, Santander; Department of Neurology (L.Q., I.I.), Hospital de la Santa Creu i Santa Pau, U.A.B. CIBERER and ERN-NMD, Barcelona, Spain; Department of Neurology (Y.W.), Affiliated Hospital of Jining Medical University, Shandong Province, China; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Clinical and Research Institute, Milan University, Rozzano, Italy; Nuffield Department of Clinical Neurosciences (S.R.), University of Oxford and Oxford University Hospitals NHS Foundation Trust, UK; Department of Neurosciences, Ophthalmology, Rehabilitation, Genetics and Maternal Sciences (A.S.), University of Genova; IRCCS San Martino Hospital (A.S.), Genova, Italy; Department of Neurology (J.P.), Hospital Clínico de Santiago, Santiago de Compostela (A Coruña), Spain; Department of Neurology (F.H.V.), Franciscus Vlietland Hospital (location: Franciscus Gasthuis), Rotterdam, the Netherlands; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (V.G.), Montefiore Medical Centre, Bronx, NY; Department of Neurology (G. Cavaletti), University Milano-Bicocca, Monza, Italy; Department of Neurology (G.G.-G.), Hospital Universitario Infanta Sofía, San Sebastián de los Reyes, Spain; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, Buenos Aires, Argentina; Department of Neurology (L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (H.D.K.), University Health Network, University of Toronto, Canada; Department of Neurology (E.D.), University Hospital of Larissa, Greece; Department of Neurology, Reference Centre for NMD (S.A.), CHU Timone, Marseille, France; Department of Neurology (A.J.v.d.K., F.E.), Amsterdam University Medical Centre, University of Amsterdam, Neuroscience Institute, Netherlands Neuromuscular Centre, Euro-NMD; Department of Neurology (P.W.W.), Haga Hospital, Den Haag; Department of Neurology (H.J.G.), Reinier de Graaf Hospital, Delft, the Netherlands; Department of Neurology (R.D.M.H.), King's College Hospital, London; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, UK; Department of Neurology (K.A.S.), University of Texas Health Science Centre at Houston; Department of Neurology (S. Karafiath), University of Utah School of Medicine, Salt Lake City; Department of Neurology (M.V.), Lahey Hospital and Medical Center, Tufts University School of Medicine, Burlington, MA; Department of Neurology (G.A.), Mental Health and Sensory Organs (NESMOS), University of Rome 'Sapienza,' Sant'Andrea Hospital, Rome, Italy; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Canada; Department of Neurology (C.G.F.), Maastricht University Medical Centre, the Netherlands; Department of Neurology (M.B.), Leeds Teaching Hospitals; Department of Neurology (R.C.R.), Addenbrooke's Hospital, Cambridge, UK; Department of Neurology (N.J.S.), University at Buffalo Jacobs School of Medicine and Biomedical Sciences, NY; Department of Neurology (R.F.), Scientific Institute San Raffaele, Milan, Italy; Department of Neurology (G.W.v.D.), Canisius Wilhelmina Hospital, Nijmegen; Department of Neurology (M.P.J.G.), Jeroen Bosch Hospital, 's-Hertogenbosch; Department of Neurology (C.S.M.S.), Leiden University Medical Centre, the Netherlands; and Department of Neurology (K.C.G.), St. Elizabeth's Medical Centre, Tufts University, School of Medicine, Boston, MA.; Shahrizaila N; From the Departments of Neurology (A.Y.D., C.W., B.v.d.B., C.V., J.R., S.E.L., K.K., B.C.J.), Public Health (H.F.L.), and Immunology (B.C.J.), Erasmus MC, University Medical Centre Rotterdam; Department of Neurology (C.W., J.P.A.S.), Maasstad Hospital, Rotterdam, the Netherlands; Laboratory of Gut-Brain Signaling (B.I., N.P., Z.I.), Laboratory Sciences and Services Division, Dhaka, Bangladesh; Department of Neurology (A.D., G. Chavada, H.J.W.), College of Medical, Veterinary and Life Sciences, University of Glasgow, UK; Department of Neurology (Y.Y., S. Kusunoki), Kindai University Faculty of Medicine, Osaka-Sayama City, Osaka, Japan; Department of Neurology (M.M.D.), University of Kansas Medical Center, Kansas City; Department of Neurology (W.W., N.K.), University of Vermont Medical Centre, Burlington; National Institute of Neurosciences and Hospital (Q.D.M.), Agargoan, Bangladesh; Department of Neurology (T.H.), Aarhus University Hospital; Department of Neurology (S.H.S.), Odense University Hospital and University of Southern Denmark, Odense, Denmark; Department of Neurology, Neuromuscular Unit (C.C.), Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Department of Neurology (K.B.), Groote Schuur Hospital, University of Cape Town, South Africa; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle, UK; Department of Neurology (B.v.d.B., C.J.G.), Franciscus Vlietland Hospital, Schiedam, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (S. Kuwabara), Chiba University, Japan; Department of Neurology (P.V.d.B.), Neuromuscular Reference Centre, University Hospital Saint-Luc, University of Louvain, Brussels, Belgium; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Dysimmune Neuropathies Unit, Department of Systems Medicine (G.A.M.), Tor Vergata University Hospital, Rome, Italy; Department of Medicine (N.S.), University of Malaya, Kuala Lumpur; Department of Neurology (G.G.), University Hospital of Modena, Italy; Department of Clinical Neurophysiology, Reference Centre for NMD (Y.P.), CHU Nantes, France; Department of Neurology (J.B.), Saarland University Medical School, Homburg-Saarland (previous affiliation); MVZ Pfalzklinikum (J.B.), Kusel, Germany (current affiliation); Department of Neurology (K.K., R.P.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (C.M.), Hospital Británico, Buenos Aires, Argentina; Department of Neurology (M.J.S.T.), Hospital Marques de Valdecilla, Santander; Department of Neurology (L.Q., I.I.), Hospital de la Santa Creu i Santa Pau, U.A.B. CIBERER and ERN-NMD, Barcelona, Spain; Department of Neurology (Y.W.), Affiliated Hospital of Jining Medical University, Shandong Province, China; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Clinical and Research Institute, Milan University, Rozzano, Italy; Nuffield Department of Clinical Neurosciences (S.R.), University of Oxford and Oxford University Hospitals NHS Foundation Trust, UK; Department of Neurosciences, Ophthalmology, Rehabilitation, Genetics and Maternal Sciences (A.S.), University of Genova; IRCCS San Martino Hospital (A.S.), Genova, Italy; Department of Neurology (J.P.), Hospital Clínico de Santiago, Santiago de Compostela (A Coruña), Spain; Department of Neurology (F.H.V.), Franciscus Vlietland Hospital (location: Franciscus Gasthuis), Rotterdam, the Netherlands; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (V.G.), Montefiore Medical Centre, Bronx, NY; Department of Neurology (G. Cavaletti), University Milano-Bicocca, Monza, Italy; Department of Neurology (G.G.-G.), Hospital Universitario Infanta Sofía, San Sebastián de los Reyes, Spain; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, Buenos Aires, Argentina; Department of Neurology (L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (H.D.K.), University Health Network, University of Toronto, Canada; Department of Neurology (E.D.), University Hospital of Larissa, Greece; Department of Neurology, Reference Centre for NMD (S.A.), CHU Timone, Marseille, France; Department of Neurology (A.J.v.d.K., F.E.), Amsterdam University Medical Centre, University of Amsterdam, Neuroscience Institute, Netherlands Neuromuscular Centre, Euro-NMD; Department of Neurology (P.W.W.), Haga Hospital, Den Haag; Department of Neurology (H.J.G.), Reinier de Graaf Hospital, Delft, the Netherlands; Department of Neurology (R.D.M.H.), King's College Hospital, London; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, UK; Department of Neurology (K.A.S.), University of Texas Health Science Centre at Houston; Department of Neurology (S. Karafiath), University of Utah School of Medicine, Salt Lake City; Department of Neurology (M.V.), Lahey Hospital and Medical Center, Tufts University School of Medicine, Burlington, MA; Department of Neurology (G.A.), Mental Health and Sensory Organs (NESMOS), University of Rome 'Sapienza,' Sant'Andrea Hospital, Rome, Italy; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Canada; Department of Neurology (C.G.F.), Maastricht University Medical Centre, the Netherlands; Department of Neurology (M.B.), Leeds Teaching Hospitals; Department of Neurology (R.C.R.), Addenbrooke's Hospital, Cambridge, UK; Department of Neurology (N.J.S.), University at Buffalo Jacobs School of Medicine and Biomedical Sciences, NY; Department of Neurology (R.F.), Scientific Institute San Raffaele, Milan, Italy; Department of Neurology (G.W.v.D.), Canisius Wilhelmina Hospital, Nijmegen; Department of Neurology (M.P.J.G.), Jeroen Bosch Hospital, 's-Hertogenbosch; Department of Neurology (C.S.M.S.), Leiden University Medical Centre, the Netherlands; and Department of Neurology (K.C.G.), St. Elizabeth's Medical Centre, Tufts University, School of Medicine, Boston, MA.; Galassi G; From the Departments of Neurology (A.Y.D., C.W., B.v.d.B., C.V., J.R., S.E.L., K.K., B.C.J.), Public Health (H.F.L.), and Immunology (B.C.J.), Erasmus MC, University Medical Centre Rotterdam; Department of Neurology (C.W., J.P.A.S.), Maasstad Hospital, Rotterdam, the Netherlands; Laboratory of Gut-Brain Signaling (B.I., N.P., Z.I.), Laboratory Sciences and Services Division, Dhaka, Bangladesh; Department of Neurology (A.D., G. Chavada, H.J.W.), College of Medical, Veterinary and Life Sciences, University of Glasgow, UK; Department of Neurology (Y.Y., S. Kusunoki), Kindai University Faculty of Medicine, Osaka-Sayama City, Osaka, Japan; Department of Neurology (M.M.D.), University of Kansas Medical Center, Kansas City; Department of Neurology (W.W., N.K.), University of Vermont Medical Centre, Burlington; National Institute of Neurosciences and Hospital (Q.D.M.), Agargoan, Bangladesh; Department of Neurology (T.H.), Aarhus University Hospital; Department of Neurology (S.H.S.), Odense University Hospital and University of Southern Denmark, Odense, Denmark; Department of Neurology, Neuromuscular Unit (C.C.), Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Department of Neurology (K.B.), Groote Schuur Hospital, University of Cape Town, South Africa; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle, UK; Department of Neurology (B.v.d.B., C.J.G.), Franciscus Vlietland Hospital, Schiedam, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (S. Kuwabara), Chiba University, Japan; Department of Neurology (P.V.d.B.), Neuromuscular Reference Centre, University Hospital Saint-Luc, University of Louvain, Brussels, Belgium; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Dysimmune Neuropathies Unit, Department of Systems Medicine (G.A.M.), Tor Vergata University Hospital, Rome, Italy; Department of Medicine (N.S.), University of Malaya, Kuala Lumpur; Department of Neurology (G.G.), University Hospital of Modena, Italy; Department of Clinical Neurophysiology, Reference Centre for NMD (Y.P.), CHU Nantes, France; Department of Neurology (J.B.), Saarland University Medical School, Homburg-Saarland (previous affiliation); MVZ Pfalzklinikum (J.B.), Kusel, Germany (current affiliation); Department of Neurology (K.K., R.P.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (C.M.), Hospital Británico, Buenos Aires, Argentina; Department of Neurology (M.J.S.T.), Hospital Marques de Valdecilla, Santander; Department of Neurology (L.Q., I.I.), Hospital de la Santa Creu i Santa Pau, U.A.B. CIBERER and ERN-NMD, Barcelona, Spain; Department of Neurology (Y.W.), Affiliated Hospital of Jining Medical University, Shandong Province, China; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Clinical and Research Institute, Milan University, Rozzano, Italy; Nuffield Department of Clinical Neurosciences (S.R.), University of Oxford and Oxford University Hospitals NHS Foundation Trust, UK; Department of Neurosciences, Ophthalmology, Rehabilitation, Genetics and Maternal Sciences (A.S.), University of Genova; IRCCS San Martino Hospital (A.S.), Genova, Italy; Department of Neurology (J.P.), Hospital Clínico de Santiago, Santiago de Compostela (A Coruña), Spain; Department of Neurology (F.H.V.), Franciscus Vlietland Hospital (location: Franciscus Gasthuis), Rotterdam, the Netherlands; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (V.G.), Montefiore Medical Centre, Bronx, NY; Department of Neurology (G. Cavaletti), University Milano-Bicocca, Monza, Italy; Department of Neurology (G.G.-G.), Hospital Universitario Infanta Sofía, San Sebastián de los Reyes, Spain; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, Buenos Aires, Argentina; Department of Neurology (L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (H.D.K.), University Health Network, University of Toronto, Canada; Department of Neurology (E.D.), University Hospital of Larissa, Greece; Department of Neurology, Reference Centre for NMD (S.A.), CHU Timone, Marseille, France; Department of Neurology (A.J.v.d.K., F.E.), Amsterdam University Medical Centre, University of Amsterdam, Neuroscience Institute, Netherlands Neuromuscular Centre, Euro-NMD; Department of Neurology (P.W.W.), Haga Hospital, Den Haag; Department of Neurology (H.J.G.), Reinier de Graaf Hospital, Delft, the Netherlands; Department of Neurology (R.D.M.H.), King's College Hospital, London; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, UK; Department of Neurology (K.A.S.), University of Texas Health Science Centre at Houston; Department of Neurology (S. Karafiath), University of Utah School of Medicine, Salt Lake City; Department of Neurology (M.V.), Lahey Hospital and Medical Center, Tufts University School of Medicine, Burlington, MA; Department of Neurology (G.A.), Mental Health and Sensory Organs (NESMOS), University of Rome 'Sapienza,' Sant'Andrea Hospital, Rome, Italy; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Canada; Department of Neurology (C.G.F.), Maastricht University Medical Centre, the Netherlands; Department of Neurology (M.B.), Leeds Teaching Hospitals; Department of Neurology (R.C.R.), Addenbrooke's Hospital, Cambridge, UK; Department of Neurology (N.J.S.), University at Buffalo Jacobs School of Medicine and Biomedical Sciences, NY; Department of Neurology (R.F.), Scientific Institute San Raffaele, Milan, Italy; Department of Neurology (G.W.v.D.), Canisius Wilhelmina Hospital, Nijmegen; Department of Neurology (M.P.J.G.), Jeroen Bosch Hospital, 's-Hertogenbosch; Department of Neurology (C.S.M.S.), Leiden University Medical Centre, the Netherlands; and Department of Neurology (K.C.G.), St. Elizabeth's Medical Centre, Tufts University, School of Medicine, Boston, MA.; Péréon Y; From the Departments of Neurology (A.Y.D., C.W., B.v.d.B., C.V., J.R., S.E.L., K.K., B.C.J.), Public Health (H.F.L.), and Immunology (B.C.J.), Erasmus MC, University Medical Centre Rotterdam; Department of Neurology (C.W., J.P.A.S.), Maasstad Hospital, Rotterdam, the Netherlands; Laboratory of Gut-Brain Signaling (B.I., N.P., Z.I.), Laboratory Sciences and Services Division, Dhaka, Bangladesh; Department of Neurology (A.D., G. Chavada, H.J.W.), College of Medical, Veterinary and Life Sciences, University of Glasgow, UK; Department of Neurology (Y.Y., S. Kusunoki), Kindai University Faculty of Medicine, Osaka-Sayama City, Osaka, Japan; Department of Neurology (M.M.D.), University of Kansas Medical Center, Kansas City; Department of Neurology (W.W., N.K.), University of Vermont Medical Centre, Burlington; National Institute of Neurosciences and Hospital (Q.D.M.), Agargoan, Bangladesh; Department of Neurology (T.H.), Aarhus University Hospital; Department of Neurology (S.H.S.), Odense University Hospital and University of Southern Denmark, Odense, Denmark; Department of Neurology, Neuromuscular Unit (C.C.), Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Department of Neurology (K.B.), Groote Schuur Hospital, University of Cape Town, South Africa; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle, UK; Department of Neurology (B.v.d.B., C.J.G.), Franciscus Vlietland Hospital, Schiedam, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (S. Kuwabara), Chiba University, Japan; Department of Neurology (P.V.d.B.), Neuromuscular Reference Centre, University Hospital Saint-Luc, University of Louvain, Brussels, Belgium; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Dysimmune Neuropathies Unit, Department of Systems Medicine (G.A.M.), Tor Vergata University Hospital, Rome, Italy; Department of Medicine (N.S.), University of Malaya, Kuala Lumpur; Department of Neurology (G.G.), University Hospital of Modena, Italy; Department of Clinical Neurophysiology, Reference Centre for NMD (Y.P.), CHU Nantes, France; Department of Neurology (J.B.), Saarland University Medical School, Homburg-Saarland (previous affiliation); MVZ Pfalzklinikum (J.B.), Kusel, Germany (current affiliation); Department of Neurology (K.K., R.P.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (C.M.), Hospital Británico, Buenos Aires, Argentina; Department of Neurology (M.J.S.T.), Hospital Marques de Valdecilla, Santander; Department of Neurology (L.Q., I.I.), Hospital de la Santa Creu i Santa Pau, U.A.B. CIBERER and ERN-NMD, Barcelona, Spain; Department of Neurology (Y.W.), Affiliated Hospital of Jining Medical University, Shandong Province, China; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Clinical and Research Institute, Milan University, Rozzano, Italy; Nuffield Department of Clinical Neurosciences (S.R.), University of Oxford and Oxford University Hospitals NHS Foundation Trust, UK; Department of Neurosciences, Ophthalmology, Rehabilitation, Genetics and Maternal Sciences (A.S.), University of Genova; IRCCS San Martino Hospital (A.S.), Genova, Italy; Department of Neurology (J.P.), Hospital Clínico de Santiago, Santiago de Compostela (A Coruña), Spain; Department of Neurology (F.H.V.), Franciscus Vlietland Hospital (location: Franciscus Gasthuis), Rotterdam, the Netherlands; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (V.G.), Montefiore Medical Centre, Bronx, NY; Department of Neurology (G. Cavaletti), University Milano-Bicocca, Monza, Italy; Department of Neurology (G.G.-G.), Hospital Universitario Infanta Sofía, San Sebastián de los Reyes, Spain; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, Buenos Aires, Argentina; Department of Neurology (L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (H.D.K.), University Health Network, University of Toronto, Canada; Department of Neurology (E.D.), University Hospital of Larissa, Greece; Department of Neurology, Reference Centre for NMD (S.A.), CHU Timone, Marseille, France; Department of Neurology (A.J.v.d.K., F.E.), Amsterdam University Medical Centre, University of Amsterdam, Neuroscience Institute, Netherlands Neuromuscular Centre, Euro-NMD; Department of Neurology (P.W.W.), Haga Hospital, Den Haag; Department of Neurology (H.J.G.), Reinier de Graaf Hospital, Delft, the Netherlands; Department of Neurology (R.D.M.H.), King's College Hospital, London; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, UK; Department of Neurology (K.A.S.), University of Texas Health Science Centre at Houston; Department of Neurology (S. Karafiath), University of Utah School of Medicine, Salt Lake City; Department of Neurology (M.V.), Lahey Hospital and Medical Center, Tufts University School of Medicine, Burlington, MA; Department of Neurology (G.A.), Mental Health and Sensory Organs (NESMOS), University of Rome 'Sapienza,' Sant'Andrea Hospital, Rome, Italy; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Canada; Department of Neurology (C.G.F.), Maastricht University Medical Centre, the Netherlands; Department of Neurology (M.B.), Leeds Teaching Hospitals; Department of Neurology (R.C.R.), Addenbrooke's Hospital, Cambridge, UK; Department of Neurology (N.J.S.), University at Buffalo Jacobs School of Medicine and Biomedical Sciences, NY; Department of Neurology (R.F.), Scientific Institute San Raffaele, Milan, Italy; Department of Neurology (G.W.v.D.), Canisius Wilhelmina Hospital, Nijmegen; Department of Neurology (M.P.J.G.), Jeroen Bosch Hospital, 's-Hertogenbosch; Department of Neurology (C.S.M.S.), Leiden University Medical Centre, the Netherlands; and Department of Neurology (K.C.G.), St. Elizabeth's Medical Centre, Tufts University, School of Medicine, Boston, MA.; Bürmann J; From the Departments of Neurology (A.Y.D., C.W., B.v.d.B., C.V., J.R., S.E.L., K.K., B.C.J.), Public Health (H.F.L.), and Immunology (B.C.J.), Erasmus MC, University Medical Centre Rotterdam; Department of Neurology (C.W., J.P.A.S.), Maasstad Hospital, Rotterdam, the Netherlands; Laboratory of Gut-Brain Signaling (B.I., N.P., Z.I.), Laboratory Sciences and Services Division, Dhaka, Bangladesh; Department of Neurology (A.D., G. Chavada, H.J.W.), College of Medical, Veterinary and Life Sciences, University of Glasgow, UK; Department of Neurology (Y.Y., S. Kusunoki), Kindai University Faculty of Medicine, Osaka-Sayama City, Osaka, Japan; Department of Neurology (M.M.D.), University of Kansas Medical Center, Kansas City; Department of Neurology (W.W., N.K.), University of Vermont Medical Centre, Burlington; National Institute of Neurosciences and Hospital (Q.D.M.), Agargoan, Bangladesh; Department of Neurology (T.H.), Aarhus University Hospital; Department of Neurology (S.H.S.), Odense University Hospital and University of Southern Denmark, Odense, Denmark; Department of Neurology, Neuromuscular Unit (C.C.), Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Department of Neurology (K.B.), Groote Schuur Hospital, University of Cape Town, South Africa; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle, UK; Department of Neurology (B.v.d.B., C.J.G.), Franciscus Vlietland Hospital, Schiedam, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (S. Kuwabara), Chiba University, Japan; Department of Neurology (P.V.d.B.), Neuromuscular Reference Centre, University Hospital Saint-Luc, University of Louvain, Brussels, Belgium; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Dysimmune Neuropathies Unit, Department of Systems Medicine (G.A.M.), Tor Vergata University Hospital, Rome, Italy; Department of Medicine (N.S.), University of Malaya, Kuala Lumpur; Department of Neurology (G.G.), University Hospital of Modena, Italy; Department of Clinical Neurophysiology, Reference Centre for NMD (Y.P.), CHU Nantes, France; Department of Neurology (J.B.), Saarland University Medical School, Homburg-Saarland (previous affiliation); MVZ Pfalzklinikum (J.B.), Kusel, Germany (current affiliation); Department of Neurology (K.K., R.P.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (C.M.), Hospital Británico, Buenos Aires, Argentina; Department of Neurology (M.J.S.T.), Hospital Marques de Valdecilla, Santander; Department of Neurology (L.Q., I.I.), Hospital de la Santa Creu i Santa Pau, U.A.B. CIBERER and ERN-NMD, Barcelona, Spain; Department of Neurology (Y.W.), Affiliated Hospital of Jining Medical University, Shandong Province, China; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Clinical and Research Institute, Milan University, Rozzano, Italy; Nuffield Department of Clinical Neurosciences (S.R.), University of Oxford and Oxford University Hospitals NHS Foundation Trust, UK; Department of Neurosciences, Ophthalmology, Rehabilitation, Genetics and Maternal Sciences (A.S.), University of Genova; IRCCS San Martino Hospital (A.S.), Genova, Italy; Department of Neurology (J.P.), Hospital Clínico de Santiago, Santiago de Compostela (A Coruña), Spain; Department of Neurology (F.H.V.), Franciscus Vlietland Hospital (location: Franciscus Gasthuis), Rotterdam, the Netherlands; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (V.G.), Montefiore Medical Centre, Bronx, NY; Department of Neurology (G. Cavaletti), University Milano-Bicocca, Monza, Italy; Department of Neurology (G.G.-G.), Hospital Universitario Infanta Sofía, San Sebastián de los Reyes, Spain; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, Buenos Aires, Argentina; Department of Neurology (L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (H.D.K.), University Health Network, University of Toronto, Canada; Department of Neurology (E.D.), University Hospital of Larissa, Greece; Department of Neurology, Reference Centre for NMD (S.A.), CHU Timone, Marseille, France; Department of Neurology (A.J.v.d.K., F.E.), Amsterdam University Medical Centre, University of Amsterdam, Neuroscience Institute, Netherlands Neuromuscular Centre, Euro-NMD; Department of Neurology (P.W.W.), Haga Hospital, Den Haag; Department of Neurology (H.J.G.), Reinier de Graaf Hospital, Delft, the Netherlands; Department of Neurology (R.D.M.H.), King's College Hospital, London; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, UK; Department of Neurology (K.A.S.), University of Texas Health Science Centre at Houston; Department of Neurology (S. Karafiath), University of Utah School of Medicine, Salt Lake City; Department of Neurology (M.V.), Lahey Hospital and Medical Center, Tufts University School of Medicine, Burlington, MA; Department of Neurology (G.A.), Mental Health and Sensory Organs (NESMOS), University of Rome 'Sapienza,' Sant'Andrea Hospital, Rome, Italy; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Canada; Department of Neurology (C.G.F.), Maastricht University Medical Centre, the Netherlands; Department of Neurology (M.B.), Leeds Teaching Hospitals; Department of Neurology (R.C.R.), Addenbrooke's Hospital, Cambridge, UK; Department of Neurology (N.J.S.), University at Buffalo Jacobs School of Medicine and Biomedical Sciences, NY; Department of Neurology (R.F.), Scientific Institute San Raffaele, Milan, Italy; Department of Neurology (G.W.v.D.), Canisius Wilhelmina Hospital, Nijmegen; Department of Neurology (M.P.J.G.), Jeroen Bosch Hospital, 's-Hertogenbosch; Department of Neurology (C.S.M.S.), Leiden University Medical Centre, the Netherlands; and Department of Neurology (K.C.G.), St. Elizabeth's Medical Centre, Tufts University, School of Medicine, Boston, MA.; Kuitwaard K; From the Departments of Neurology (A.Y.D., C.W., B.v.d.B., C.V., J.R., S.E.L., K.K., B.C.J.), Public Health (H.F.L.), and Immunology (B.C.J.), Erasmus MC, University Medical Centre Rotterdam; Department of Neurology (C.W., J.P.A.S.), Maasstad Hospital, Rotterdam, the Netherlands; Laboratory of Gut-Brain Signaling (B.I., N.P., Z.I.), Laboratory Sciences and Services Division, Dhaka, Bangladesh; Department of Neurology (A.D., G. Chavada, H.J.W.), College of Medical, Veterinary and Life Sciences, University of Glasgow, UK; Department of Neurology (Y.Y., S. Kusunoki), Kindai University Faculty of Medicine, Osaka-Sayama City, Osaka, Japan; Department of Neurology (M.M.D.), University of Kansas Medical Center, Kansas City; Department of Neurology (W.W., N.K.), University of Vermont Medical Centre, Burlington; National Institute of Neurosciences and Hospital (Q.D.M.), Agargoan, Bangladesh; Department of Neurology (T.H.), Aarhus University Hospital; Department of Neurology (S.H.S.), Odense University Hospital and University of Southern Denmark, Odense, Denmark; Department of Neurology, Neuromuscular Unit (C.C.), Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Department of Neurology (K.B.), Groote Schuur Hospital, University of Cape Town, South Africa; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle, UK; Department of Neurology (B.v.d.B., C.J.G.), Franciscus Vlietland Hospital, Schiedam, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (S. Kuwabara), Chiba University, Japan; Department of Neurology (P.V.d.B.), Neuromuscular Reference Centre, University Hospital Saint-Luc, University of Louvain, Brussels, Belgium; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Dysimmune Neuropathies Unit, Department of Systems Medicine (G.A.M.), Tor Vergata University Hospital, Rome, Italy; Department of Medicine (N.S.), University of Malaya, Kuala Lumpur; Department of Neurology (G.G.), University Hospital of Modena, Italy; Department of Clinical Neurophysiology, Reference Centre for NMD (Y.P.), CHU Nantes, France; Department of Neurology (J.B.), Saarland University Medical School, Homburg-Saarland (previous affiliation); MVZ Pfalzklinikum (J.B.), Kusel, Germany (current affiliation); Department of Neurology (K.K., R.P.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (C.M.), Hospital Británico, Buenos Aires, Argentina; Department of Neurology (M.J.S.T.), Hospital Marques de Valdecilla, Santander; Department of Neurology (L.Q., I.I.), Hospital de la Santa Creu i Santa Pau, U.A.B. CIBERER and ERN-NMD, Barcelona, Spain; Department of Neurology (Y.W.), Affiliated Hospital of Jining Medical University, Shandong Province, China; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Clinical and Research Institute, Milan University, Rozzano, Italy; Nuffield Department of Clinical Neurosciences (S.R.), University of Oxford and Oxford University Hospitals NHS Foundation Trust, UK; Department of Neurosciences, Ophthalmology, Rehabilitation, Genetics and Maternal Sciences (A.S.), University of Genova; IRCCS San Martino Hospital (A.S.), Genova, Italy; Department of Neurology (J.P.), Hospital Clínico de Santiago, Santiago de Compostela (A Coruña), Spain; Department of Neurology (F.H.V.), Franciscus Vlietland Hospital (location: Franciscus Gasthuis), Rotterdam, the Netherlands; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (V.G.), Montefiore Medical Centre, Bronx, NY; Department of Neurology (G. Cavaletti), University Milano-Bicocca, Monza, Italy; Department of Neurology (G.G.-G.), Hospital Universitario Infanta Sofía, San Sebastián de los Reyes, Spain; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, Buenos Aires, Argentina; Department of Neurology (L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (H.D.K.), University Health Network, University of Toronto, Canada; Department of Neurology (E.D.), University Hospital of Larissa, Greece; Department of Neurology, Reference Centre for NMD (S.A.), CHU Timone, Marseille, France; Department of Neurology (A.J.v.d.K., F.E.), Amsterdam University Medical Centre, University of Amsterdam, Neuroscience Institute, Netherlands Neuromuscular Centre, Euro-NMD; Department of Neurology (P.W.W.), Haga Hospital, Den Haag; Department of Neurology (H.J.G.), Reinier de Graaf Hospital, Delft, the Netherlands; Department of Neurology (R.D.M.H.), King's College Hospital, London; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, UK; Department of Neurology (K.A.S.), University of Texas Health Science Centre at Houston; Department of Neurology (S. Karafiath), University of Utah School of Medicine, Salt Lake City; Department of Neurology (M.V.), Lahey Hospital and Medical Center, Tufts University School of Medicine, Burlington, MA; Department of Neurology (G.A.), Mental Health and Sensory Organs (NESMOS), University of Rome 'Sapienza,' Sant'Andrea Hospital, Rome, Italy; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Canada; Department of Neurology (C.G.F.), Maastricht University Medical Centre, the Netherlands; Department of Neurology (M.B.), Leeds Teaching Hospitals; Department of Neurology (R.C.R.), Addenbrooke's Hospital, Cambridge, UK; Department of Neurology (N.J.S.), University at Buffalo Jacobs School of Medicine and Biomedical Sciences, NY; Department of Neurology (R.F.), Scientific Institute San Raffaele, Milan, Italy; Department of Neurology (G.W.v.D.), Canisius Wilhelmina Hospital, Nijmegen; Department of Neurology (M.P.J.G.), Jeroen Bosch Hospital, 's-Hertogenbosch; Department of Neurology (C.S.M.S.), Leiden University Medical Centre, the Netherlands; and Department of Neurology (K.C.G.), St. Elizabeth's Medical Centre, Tufts University, School of Medicine, Boston, MA.; Kleyweg RP; From the Departments of Neurology (A.Y.D., C.W., B.v.d.B., C.V., J.R., S.E.L., K.K., B.C.J.), Public Health (H.F.L.), and Immunology (B.C.J.), Erasmus MC, University Medical Centre Rotterdam; Department of Neurology (C.W., J.P.A.S.), Maasstad Hospital, Rotterdam, the Netherlands; Laboratory of Gut-Brain Signaling (B.I., N.P., Z.I.), Laboratory Sciences and Services Division, Dhaka, Bangladesh; Department of Neurology (A.D., G. Chavada, H.J.W.), College of Medical, Veterinary and Life Sciences, University of Glasgow, UK; Department of Neurology (Y.Y., S. Kusunoki), Kindai University Faculty of Medicine, Osaka-Sayama City, Osaka, Japan; Department of Neurology (M.M.D.), University of Kansas Medical Center, Kansas City; Department of Neurology (W.W., N.K.), University of Vermont Medical Centre, Burlington; National Institute of Neurosciences and Hospital (Q.D.M.), Agargoan, Bangladesh; Department of Neurology (T.H.), Aarhus University Hospital; Department of Neurology (S.H.S.), Odense University Hospital and University of Southern Denmark, Odense, Denmark; Department of Neurology, Neuromuscular Unit (C.C.), Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Department of Neurology (K.B.), Groote Schuur Hospital, University of Cape Town, South Africa; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle, UK; Department of Neurology (B.v.d.B., C.J.G.), Franciscus Vlietland Hospital, Schiedam, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (S. Kuwabara), Chiba University, Japan; Department of Neurology (P.V.d.B.), Neuromuscular Reference Centre, University Hospital Saint-Luc, University of Louvain, Brussels, Belgium; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Dysimmune Neuropathies Unit, Department of Systems Medicine (G.A.M.), Tor Vergata University Hospital, Rome, Italy; Department of Medicine (N.S.), University of Malaya, Kuala Lumpur; Department of Neurology (G.G.), University Hospital of Modena, Italy; Department of Clinical Neurophysiology, Reference Centre for NMD (Y.P.), CHU Nantes, France; Department of Neurology (J.B.), Saarland University Medical School, Homburg-Saarland (previous affiliation); MVZ Pfalzklinikum (J.B.), Kusel, Germany (current affiliation); Department of Neurology (K.K., R.P.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (C.M.), Hospital Británico, Buenos Aires, Argentina; Department of Neurology (M.J.S.T.), Hospital Marques de Valdecilla, Santander; Department of Neurology (L.Q., I.I.), Hospital de la Santa Creu i Santa Pau, U.A.B. CIBERER and ERN-NMD, Barcelona, Spain; Department of Neurology (Y.W.), Affiliated Hospital of Jining Medical University, Shandong Province, China; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Clinical and Research Institute, Milan University, Rozzano, Italy; Nuffield Department of Clinical Neurosciences (S.R.), University of Oxford and Oxford University Hospitals NHS Foundation Trust, UK; Department of Neurosciences, Ophthalmology, Rehabilitation, Genetics and Maternal Sciences (A.S.), University of Genova; IRCCS San Martino Hospital (A.S.), Genova, Italy; Department of Neurology (J.P.), Hospital Clínico de Santiago, Santiago de Compostela (A Coruña), Spain; Department of Neurology (F.H.V.), Franciscus Vlietland Hospital (location: Franciscus Gasthuis), Rotterdam, the Netherlands; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (V.G.), Montefiore Medical Centre, Bronx, NY; Department of Neurology (G. Cavaletti), University Milano-Bicocca, Monza, Italy; Department of Neurology (G.G.-G.), Hospital Universitario Infanta Sofía, San Sebastián de los Reyes, Spain; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, Buenos Aires, Argentina; Department of Neurology (L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (H.D.K.), University Health Network, University of Toronto, Canada; Department of Neurology (E.D.), University Hospital of Larissa, Greece; Department of Neurology, Reference Centre for NMD (S.A.), CHU Timone, Marseille, France; Department of Neurology (A.J.v.d.K., F.E.), Amsterdam University Medical Centre, University of Amsterdam, Neuroscience Institute, Netherlands Neuromuscular Centre, Euro-NMD; Department of Neurology (P.W.W.), Haga Hospital, Den Haag; Department of Neurology (H.J.G.), Reinier de Graaf Hospital, Delft, the Netherlands; Department of Neurology (R.D.M.H.), King's College Hospital, London; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, UK; Department of Neurology (K.A.S.), University of Texas Health Science Centre at Houston; Department of Neurology (S. Karafiath), University of Utah School of Medicine, Salt Lake City; Department of Neurology (M.V.), Lahey Hospital and Medical Center, Tufts University School of Medicine, Burlington, MA; Department of Neurology (G.A.), Mental Health and Sensory Organs (NESMOS), University of Rome 'Sapienza,' Sant'Andrea Hospital, Rome, Italy; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Canada; Department of Neurology (C.G.F.), Maastricht University Medical Centre, the Netherlands; Department of Neurology (M.B.), Leeds Teaching Hospitals; Department of Neurology (R.C.R.), Addenbrooke's Hospital, Cambridge, UK; Department of Neurology (N.J.S.), University at Buffalo Jacobs School of Medicine and Biomedical Sciences, NY; Department of Neurology (R.F.), Scientific Institute San Raffaele, Milan, Italy; Department of Neurology (G.W.v.D.), Canisius Wilhelmina Hospital, Nijmegen; Department of Neurology (M.P.J.G.), Jeroen Bosch Hospital, 's-Hertogenbosch; Department of Neurology (C.S.M.S.), Leiden University Medical Centre, the Netherlands; and Department of Neurology (K.C.G.), St. Elizabeth's Medical Centre, Tufts University, School of Medicine, Boston, MA.; Marchesoni C; From the Departments of Neurology (A.Y.D., C.W., B.v.d.B., C.V., J.R., S.E.L., K.K., B.C.J.), Public Health (H.F.L.), and Immunology (B.C.J.), Erasmus MC, University Medical Centre Rotterdam; Department of Neurology (C.W., J.P.A.S.), Maasstad Hospital, Rotterdam, the Netherlands; Laboratory of Gut-Brain Signaling (B.I., N.P., Z.I.), Laboratory Sciences and Services Division, Dhaka, Bangladesh; Department of Neurology (A.D., G. Chavada, H.J.W.), College of Medical, Veterinary and Life Sciences, University of Glasgow, UK; Department of Neurology (Y.Y., S. Kusunoki), Kindai University Faculty of Medicine, Osaka-Sayama City, Osaka, Japan; Department of Neurology (M.M.D.), University of Kansas Medical Center, Kansas City; Department of Neurology (W.W., N.K.), University of Vermont Medical Centre, Burlington; National Institute of Neurosciences and Hospital (Q.D.M.), Agargoan, Bangladesh; Department of Neurology (T.H.), Aarhus University Hospital; Department of Neurology (S.H.S.), Odense University Hospital and University of Southern Denmark, Odense, Denmark; Department of Neurology, Neuromuscular Unit (C.C.), Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Department of Neurology (K.B.), Groote Schuur Hospital, University of Cape Town, South Africa; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle, UK; Department of Neurology (B.v.d.B., C.J.G.), Franciscus Vlietland Hospital, Schiedam, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (S. Kuwabara), Chiba University, Japan; Department of Neurology (P.V.d.B.), Neuromuscular Reference Centre, University Hospital Saint-Luc, University of Louvain, Brussels, Belgium; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Dysimmune Neuropathies Unit, Department of Systems Medicine (G.A.M.), Tor Vergata University Hospital, Rome, Italy; Department of Medicine (N.S.), University of Malaya, Kuala Lumpur; Department of Neurology (G.G.), University Hospital of Modena, Italy; Department of Clinical Neurophysiology, Reference Centre for NMD (Y.P.), CHU Nantes, France; Department of Neurology (J.B.), Saarland University Medical School, Homburg-Saarland (previous affiliation); MVZ Pfalzklinikum (J.B.), Kusel, Germany (current affiliation); Department of Neurology (K.K., R.P.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (C.M.), Hospital Británico, Buenos Aires, Argentina; Department of Neurology (M.J.S.T.), Hospital Marques de Valdecilla, Santander; Department of Neurology (L.Q., I.I.), Hospital de la Santa Creu i Santa Pau, U.A.B. CIBERER and ERN-NMD, Barcelona, Spain; Department of Neurology (Y.W.), Affiliated Hospital of Jining Medical University, Shandong Province, China; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Clinical and Research Institute, Milan University, Rozzano, Italy; Nuffield Department of Clinical Neurosciences (S.R.), University of Oxford and Oxford University Hospitals NHS Foundation Trust, UK; Department of Neurosciences, Ophthalmology, Rehabilitation, Genetics and Maternal Sciences (A.S.), University of Genova; IRCCS San Martino Hospital (A.S.), Genova, Italy; Department of Neurology (J.P.), Hospital Clínico de Santiago, Santiago de Compostela (A Coruña), Spain; Department of Neurology (F.H.V.), Franciscus Vlietland Hospital (location: Franciscus Gasthuis), Rotterdam, the Netherlands; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (V.G.), Montefiore Medical Centre, Bronx, NY; Department of Neurology (G. Cavaletti), University Milano-Bicocca, Monza, Italy; Department of Neurology (G.G.-G.), Hospital Universitario Infanta Sofía, San Sebastián de los Reyes, Spain; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, Buenos Aires, Argentina; Department of Neurology (L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (H.D.K.), University Health Network, University of Toronto, Canada; Department of Neurology (E.D.), University Hospital of Larissa, Greece; Department of Neurology, Reference Centre for NMD (S.A.), CHU Timone, Marseille, France; Department of Neurology (A.J.v.d.K., F.E.), Amsterdam University Medical Centre, University of Amsterdam, Neuroscience Institute, Netherlands Neuromuscular Centre, Euro-NMD; Department of Neurology (P.W.W.), Haga Hospital, Den Haag; Department of Neurology (H.J.G.), Reinier de Graaf Hospital, Delft, the Netherlands; Department of Neurology (R.D.M.H.), King's College Hospital, London; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, UK; Department of Neurology (K.A.S.), University of Texas Health Science Centre at Houston; Department of Neurology (S. Karafiath), University of Utah School of Medicine, Salt Lake City; Department of Neurology (M.V.), Lahey Hospital and Medical Center, Tufts University School of Medicine, Burlington, MA; Department of Neurology (G.A.), Mental Health and Sensory Organs (NESMOS), University of Rome 'Sapienza,' Sant'Andrea Hospital, Rome, Italy; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Canada; Department of Neurology (C.G.F.), Maastricht University Medical Centre, the Netherlands; Department of Neurology (M.B.), Leeds Teaching Hospitals; Department of Neurology (R.C.R.), Addenbrooke's Hospital, Cambridge, UK; Department of Neurology (N.J.S.), University at Buffalo Jacobs School of Medicine and Biomedical Sciences, NY; Department of Neurology (R.F.), Scientific Institute San Raffaele, Milan, Italy; Department of Neurology (G.W.v.D.), Canisius Wilhelmina Hospital, Nijmegen; Department of Neurology (M.P.J.G.), Jeroen Bosch Hospital, 's-Hertogenbosch; Department of Neurology (C.S.M.S.), Leiden University Medical Centre, the Netherlands; and Department of Neurology (K.C.G.), St. Elizabeth's Medical Centre, Tufts University, School of Medicine, Boston, MA.; Sedano Tous MJ; From the Departments of Neurology (A.Y.D., C.W., B.v.d.B., C.V., J.R., S.E.L., K.K., B.C.J.), Public Health (H.F.L.), and Immunology (B.C.J.), Erasmus MC, University Medical Centre Rotterdam; Department of Neurology (C.W., J.P.A.S.), Maasstad Hospital, Rotterdam, the Netherlands; Laboratory of Gut-Brain Signaling (B.I., N.P., Z.I.), Laboratory Sciences and Services Division, Dhaka, Bangladesh; Department of Neurology (A.D., G. Chavada, H.J.W.), College of Medical, Veterinary and Life Sciences, University of Glasgow, UK; Department of Neurology (Y.Y., S. Kusunoki), Kindai University Faculty of Medicine, Osaka-Sayama City, Osaka, Japan; Department of Neurology (M.M.D.), University of Kansas Medical Center, Kansas City; Department of Neurology (W.W., N.K.), University of Vermont Medical Centre, Burlington; National Institute of Neurosciences and Hospital (Q.D.M.), Agargoan, Bangladesh; Department of Neurology (T.H.), Aarhus University Hospital; Department of Neurology (S.H.S.), Odense University Hospital and University of Southern Denmark, Odense, Denmark; Department of Neurology, Neuromuscular Unit (C.C.), Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Department of Neurology (K.B.), Groote Schuur Hospital, University of Cape Town, South Africa; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle, UK; Department of Neurology (B.v.d.B., C.J.G.), Franciscus Vlietland Hospital, Schiedam, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (S. Kuwabara), Chiba University, Japan; Department of Neurology (P.V.d.B.), Neuromuscular Reference Centre, University Hospital Saint-Luc, University of Louvain, Brussels, Belgium; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Dysimmune Neuropathies Unit, Department of Systems Medicine (G.A.M.), Tor Vergata University Hospital, Rome, Italy; Department of Medicine (N.S.), University of Malaya, Kuala Lumpur; Department of Neurology (G.G.), University Hospital of Modena, Italy; Department of Clinical Neurophysiology, Reference Centre for NMD (Y.P.), CHU Nantes, France; Department of Neurology (J.B.), Saarland University Medical School, Homburg-Saarland (previous affiliation); MVZ Pfalzklinikum (J.B.), Kusel, Germany (current affiliation); Department of Neurology (K.K., R.P.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (C.M.), Hospital Británico, Buenos Aires, Argentina; Department of Neurology (M.J.S.T.), Hospital Marques de Valdecilla, Santander; Department of Neurology (L.Q., I.I.), Hospital de la Santa Creu i Santa Pau, U.A.B. CIBERER and ERN-NMD, Barcelona, Spain; Department of Neurology (Y.W.), Affiliated Hospital of Jining Medical University, Shandong Province, China; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Clinical and Research Institute, Milan University, Rozzano, Italy; Nuffield Department of Clinical Neurosciences (S.R.), University of Oxford and Oxford University Hospitals NHS Foundation Trust, UK; Department of Neurosciences, Ophthalmology, Rehabilitation, Genetics and Maternal Sciences (A.S.), University of Genova; IRCCS San Martino Hospital (A.S.), Genova, Italy; Department of Neurology (J.P.), Hospital Clínico de Santiago, Santiago de Compostela (A Coruña), Spain; Department of Neurology (F.H.V.), Franciscus Vlietland Hospital (location: Franciscus Gasthuis), Rotterdam, the Netherlands; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (V.G.), Montefiore Medical Centre, Bronx, NY; Department of Neurology (G. Cavaletti), University Milano-Bicocca, Monza, Italy; Department of Neurology (G.G.-G.), Hospital Universitario Infanta Sofía, San Sebastián de los Reyes, Spain; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, Buenos Aires, Argentina; Department of Neurology (L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (H.D.K.), University Health Network, University of Toronto, Canada; Department of Neurology (E.D.), University Hospital of Larissa, Greece; Department of Neurology, Reference Centre for NMD (S.A.), CHU Timone, Marseille, France; Department of Neurology (A.J.v.d.K., F.E.), Amsterdam University Medical Centre, University of Amsterdam, Neuroscience Institute, Netherlands Neuromuscular Centre, Euro-NMD; Department of Neurology (P.W.W.), Haga Hospital, Den Haag; Department of Neurology (H.J.G.), Reinier de Graaf Hospital, Delft, the Netherlands; Department of Neurology (R.D.M.H.), King's College Hospital, London; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, UK; Department of Neurology (K.A.S.), University of Texas Health Science Centre at Houston; Department of Neurology (S. Karafiath), University of Utah School of Medicine, Salt Lake City; Department of Neurology (M.V.), Lahey Hospital and Medical Center, Tufts University School of Medicine, Burlington, MA; Department of Neurology (G.A.), Mental Health and Sensory Organs (NESMOS), University of Rome 'Sapienza,' Sant'Andrea Hospital, Rome, Italy; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Canada; Department of Neurology (C.G.F.), Maastricht University Medical Centre, the Netherlands; Department of Neurology (M.B.), Leeds Teaching Hospitals; Department of Neurology (R.C.R.), Addenbrooke's Hospital, Cambridge, UK; Department of Neurology (N.J.S.), University at Buffalo Jacobs School of Medicine and Biomedical Sciences, NY; Department of Neurology (R.F.), Scientific Institute San Raffaele, Milan, Italy; Department of Neurology (G.W.v.D.), Canisius Wilhelmina Hospital, Nijmegen; Department of Neurology (M.P.J.G.), Jeroen Bosch Hospital, 's-Hertogenbosch; Department of Neurology (C.S.M.S.), Leiden University Medical Centre, the Netherlands; and Department of Neurology (K.C.G.), St. Elizabeth's Medical Centre, Tufts University, School of Medicine, Boston, MA.; Querol L; From the Departments of Neurology (A.Y.D., C.W., B.v.d.B., C.V., J.R., S.E.L., K.K., B.C.J.), Public Health (H.F.L.), and Immunology (B.C.J.), Erasmus MC, University Medical Centre Rotterdam; Department of Neurology (C.W., J.P.A.S.), Maasstad Hospital, Rotterdam, the Netherlands; Laboratory of Gut-Brain Signaling (B.I., N.P., Z.I.), Laboratory Sciences and Services Division, Dhaka, Bangladesh; Department of Neurology (A.D., G. Chavada, H.J.W.), College of Medical, Veterinary and Life Sciences, University of Glasgow, UK; Department of Neurology (Y.Y., S. Kusunoki), Kindai University Faculty of Medicine, Osaka-Sayama City, Osaka, Japan; Department of Neurology (M.M.D.), University of Kansas Medical Center, Kansas City; Department of Neurology (W.W., N.K.), University of Vermont Medical Centre, Burlington; National Institute of Neurosciences and Hospital (Q.D.M.), Agargoan, Bangladesh; Department of Neurology (T.H.), Aarhus University Hospital; Department of Neurology (S.H.S.), Odense University Hospital and University of Southern Denmark, Odense, Denmark; Department of Neurology, Neuromuscular Unit (C.C.), Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Department of Neurology (K.B.), Groote Schuur Hospital, University of Cape Town, South Africa; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle, UK; Department of Neurology (B.v.d.B., C.J.G.), Franciscus Vlietland Hospital, Schiedam, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (S. Kuwabara), Chiba University, Japan; Department of Neurology (P.V.d.B.), Neuromuscular Reference Centre, University Hospital Saint-Luc, University of Louvain, Brussels, Belgium; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Dysimmune Neuropathies Unit, Department of Systems Medicine (G.A.M.), Tor Vergata University Hospital, Rome, Italy; Department of Medicine (N.S.), University of Malaya, Kuala Lumpur; Department of Neurology (G.G.), University Hospital of Modena, Italy; Department of Clinical Neurophysiology, Reference Centre for NMD (Y.P.), CHU Nantes, France; Department of Neurology (J.B.), Saarland University Medical School, Homburg-Saarland (previous affiliation); MVZ Pfalzklinikum (J.B.), Kusel, Germany (current affiliation); Department of Neurology (K.K., R.P.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (C.M.), Hospital Británico, Buenos Aires, Argentina; Department of Neurology (M.J.S.T.), Hospital Marques de Valdecilla, Santander; Department of Neurology (L.Q., I.I.), Hospital de la Santa Creu i Santa Pau, U.A.B. CIBERER and ERN-NMD, Barcelona, Spain; Department of Neurology (Y.W.), Affiliated Hospital of Jining Medical University, Shandong Province, China; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Clinical and Research Institute, Milan University, Rozzano, Italy; Nuffield Department of Clinical Neurosciences (S.R.), University of Oxford and Oxford University Hospitals NHS Foundation Trust, UK; Department of Neurosciences, Ophthalmology, Rehabilitation, Genetics and Maternal Sciences (A.S.), University of Genova; IRCCS San Martino Hospital (A.S.), Genova, Italy; Department of Neurology (J.P.), Hospital Clínico de Santiago, Santiago de Compostela (A Coruña), Spain; Department of Neurology (F.H.V.), Franciscus Vlietland Hospital (location: Franciscus Gasthuis), Rotterdam, the Netherlands; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (V.G.), Montefiore Medical Centre, Bronx, NY; Department of Neurology (G. Cavaletti), University Milano-Bicocca, Monza, Italy; Department of Neurology (G.G.-G.), Hospital Universitario Infanta Sofía, San Sebastián de los Reyes, Spain; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, Buenos Aires, Argentina; Department of Neurology (L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (H.D.K.), University Health Network, University of Toronto, Canada; Department of Neurology (E.D.), University Hospital of Larissa, Greece; Department of Neurology, Reference Centre for NMD (S.A.), CHU Timone, Marseille, France; Department of Neurology (A.J.v.d.K., F.E.), Amsterdam University Medical Centre, University of Amsterdam, Neuroscience Institute, Netherlands Neuromuscular Centre, Euro-NMD; Department of Neurology (P.W.W.), Haga Hospital, Den Haag; Department of Neurology (H.J.G.), Reinier de Graaf Hospital, Delft, the Netherlands; Department of Neurology (R.D.M.H.), King's College Hospital, London; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, UK; Department of Neurology (K.A.S.), University of Texas Health Science Centre at Houston; Department of Neurology (S. Karafiath), University of Utah School of Medicine, Salt Lake City; Department of Neurology (M.V.), Lahey Hospital and Medical Center, Tufts University School of Medicine, Burlington, MA; Department of Neurology (G.A.), Mental Health and Sensory Organs (NESMOS), University of Rome 'Sapienza,' Sant'Andrea Hospital, Rome, Italy; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Canada; Department of Neurology (C.G.F.), Maastricht University Medical Centre, the Netherlands; Department of Neurology (M.B.), Leeds Teaching Hospitals; Department of Neurology (R.C.R.), Addenbrooke's Hospital, Cambridge, UK; Department of Neurology (N.J.S.), University at Buffalo Jacobs School of Medicine and Biomedical Sciences, NY; Department of Neurology (R.F.), Scientific Institute San Raffaele, Milan, Italy; Department of Neurology (G.W.v.D.), Canisius Wilhelmina Hospital, Nijmegen; Department of Neurology (M.P.J.G.), Jeroen Bosch Hospital, 's-Hertogenbosch; Department of Neurology (C.S.M.S.), Leiden University Medical Centre, the Netherlands; and Department of Neurology (K.C.G.), St. Elizabeth's Medical Centre, Tufts University, School of Medicine, Boston, MA.; Illa I; From the Departments of Neurology (A.Y.D., C.W., B.v.d.B., C.V., J.R., S.E.L., K.K., B.C.J.), Public Health (H.F.L.), and Immunology (B.C.J.), Erasmus MC, University Medical Centre Rotterdam; Department of Neurology (C.W., J.P.A.S.), Maasstad Hospital, Rotterdam, the Netherlands; Laboratory of Gut-Brain Signaling (B.I., N.P., Z.I.), Laboratory Sciences and Services Division, Dhaka, Bangladesh; Department of Neurology (A.D., G. Chavada, H.J.W.), College of Medical, Veterinary and Life Sciences, University of Glasgow, UK; Department of Neurology (Y.Y., S. Kusunoki), Kindai University Faculty of Medicine, Osaka-Sayama City, Osaka, Japan; Department of Neurology (M.M.D.), University of Kansas Medical Center, Kansas City; Department of Neurology (W.W., N.K.), University of Vermont Medical Centre, Burlington; National Institute of Neurosciences and Hospital (Q.D.M.), Agargoan, Bangladesh; Department of Neurology (T.H.), Aarhus University Hospital; Department of Neurology (S.H.S.), Odense University Hospital and University of Southern Denmark, Odense, Denmark; Department of Neurology, Neuromuscular Unit (C.C.), Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Department of Neurology (K.B.), Groote Schuur Hospital, University of Cape Town, South Africa; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle, UK; Department of Neurology (B.v.d.B., C.J.G.), Franciscus Vlietland Hospital, Schiedam, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (S. Kuwabara), Chiba University, Japan; Department of Neurology (P.V.d.B.), Neuromuscular Reference Centre, University Hospital Saint-Luc, University of Louvain, Brussels, Belgium; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Dysimmune Neuropathies Unit, Department of Systems Medicine (G.A.M.), Tor Vergata University Hospital, Rome, Italy; Department of Medicine (N.S.), University of Malaya, Kuala Lumpur; Department of Neurology (G.G.), University Hospital of Modena, Italy; Department of Clinical Neurophysiology, Reference Centre for NMD (Y.P.), CHU Nantes, France; Department of Neurology (J.B.), Saarland University Medical School, Homburg-Saarland (previous affiliation); MVZ Pfalzklinikum (J.B.), Kusel, Germany (current affiliation); Department of Neurology (K.K., R.P.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (C.M.), Hospital Británico, Buenos Aires, Argentina; Department of Neurology (M.J.S.T.), Hospital Marques de Valdecilla, Santander; Department of Neurology (L.Q., I.I.), Hospital de la Santa Creu i Santa Pau, U.A.B. CIBERER and ERN-NMD, Barcelona, Spain; Department of Neurology (Y.W.), Affiliated Hospital of Jining Medical University, Shandong Province, China; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Clinical and Research Institute, Milan University, Rozzano, Italy; Nuffield Department of Clinical Neurosciences (S.R.), University of Oxford and Oxford University Hospitals NHS Foundation Trust, UK; Department of Neurosciences, Ophthalmology, Rehabilitation, Genetics and Maternal Sciences (A.S.), University of Genova; IRCCS San Martino Hospital (A.S.), Genova, Italy; Department of Neurology (J.P.), Hospital Clínico de Santiago, Santiago de Compostela (A Coruña), Spain; Department of Neurology (F.H.V.), Franciscus Vlietland Hospital (location: Franciscus Gasthuis), Rotterdam, the Netherlands; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (V.G.), Montefiore Medical Centre, Bronx, NY; Department of Neurology (G. Cavaletti), University Milano-Bicocca, Monza, Italy; Department of Neurology (G.G.-G.), Hospital Universitario Infanta Sofía, San Sebastián de los Reyes, Spain; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, Buenos Aires, Argentina; Department of Neurology (L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (H.D.K.), University Health Network, University of Toronto, Canada; Department of Neurology (E.D.), University Hospital of Larissa, Greece; Department of Neurology, Reference Centre for NMD (S.A.), CHU Timone, Marseille, France; Department of Neurology (A.J.v.d.K., F.E.), Amsterdam University Medical Centre, University of Amsterdam, Neuroscience Institute, Netherlands Neuromuscular Centre, Euro-NMD; Department of Neurology (P.W.W.), Haga Hospital, Den Haag; Department of Neurology (H.J.G.), Reinier de Graaf Hospital, Delft, the Netherlands; Department of Neurology (R.D.M.H.), King's College Hospital, London; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, UK; Department of Neurology (K.A.S.), University of Texas Health Science Centre at Houston; Department of Neurology (S. Karafiath), University of Utah School of Medicine, Salt Lake City; Department of Neurology (M.V.), Lahey Hospital and Medical Center, Tufts University School of Medicine, Burlington, MA; Department of Neurology (G.A.), Mental Health and Sensory Organs (NESMOS), University of Rome 'Sapienza,' Sant'Andrea Hospital, Rome, Italy; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Canada; Department of Neurology (C.G.F.), Maastricht University Medical Centre, the Netherlands; Department of Neurology (M.B.), Leeds Teaching Hospitals; Department of Neurology (R.C.R.), Addenbrooke's Hospital, Cambridge, UK; Department of Neurology (N.J.S.), University at Buffalo Jacobs School of Medicine and Biomedical Sciences, NY; Department of Neurology (R.F.), Scientific Institute San Raffaele, Milan, Italy; Department of Neurology (G.W.v.D.), Canisius Wilhelmina Hospital, Nijmegen; Department of Neurology (M.P.J.G.), Jeroen Bosch Hospital, 's-Hertogenbosch; Department of Neurology (C.S.M.S.), Leiden University Medical Centre, the Netherlands; and Department of Neurology (K.C.G.), St. Elizabeth's Medical Centre, Tufts University, School of Medicine, Boston, MA.; Wang Y; From the Departments of Neurology (A.Y.D., C.W., B.v.d.B., C.V., J.R., S.E.L., K.K., B.C.J.), Public Health (H.F.L.), and Immunology (B.C.J.), Erasmus MC, University Medical Centre Rotterdam; Department of Neurology (C.W., J.P.A.S.), Maasstad Hospital, Rotterdam, the Netherlands; Laboratory of Gut-Brain Signaling (B.I., N.P., Z.I.), Laboratory Sciences and Services Division, Dhaka, Bangladesh; Department of Neurology (A.D., G. Chavada, H.J.W.), College of Medical, Veterinary and Life Sciences, University of Glasgow, UK; Department of Neurology (Y.Y., S. Kusunoki), Kindai University Faculty of Medicine, Osaka-Sayama City, Osaka, Japan; Department of Neurology (M.M.D.), University of Kansas Medical Center, Kansas City; Department of Neurology (W.W., N.K.), University of Vermont Medical Centre, Burlington; National Institute of Neurosciences and Hospital (Q.D.M.), Agargoan, Bangladesh; Department of Neurology (T.H.), Aarhus University Hospital; Department of Neurology (S.H.S.), Odense University Hospital and University of Southern Denmark, Odense, Denmark; Department of Neurology, Neuromuscular Unit (C.C.), Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Department of Neurology (K.B.), Groote Schuur Hospital, University of Cape Town, South Africa; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle, UK; Department of Neurology (B.v.d.B., C.J.G.), Franciscus Vlietland Hospital, Schiedam, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (S. Kuwabara), Chiba University, Japan; Department of Neurology (P.V.d.B.), Neuromuscular Reference Centre, University Hospital Saint-Luc, University of Louvain, Brussels, Belgium; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Dysimmune Neuropathies Unit, Department of Systems Medicine (G.A.M.), Tor Vergata University Hospital, Rome, Italy; Department of Medicine (N.S.), University of Malaya, Kuala Lumpur; Department of Neurology (G.G.), University Hospital of Modena, Italy; Department of Clinical Neurophysiology, Reference Centre for NMD (Y.P.), CHU Nantes, France; Department of Neurology (J.B.), Saarland University Medical School, Homburg-Saarland (previous affiliation); MVZ Pfalzklinikum (J.B.), Kusel, Germany (current affiliation); Department of Neurology (K.K., R.P.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (C.M.), Hospital Británico, Buenos Aires, Argentina; Department of Neurology (M.J.S.T.), Hospital Marques de Valdecilla, Santander; Department of Neurology (L.Q., I.I.), Hospital de la Santa Creu i Santa Pau, U.A.B. CIBERER and ERN-NMD, Barcelona, Spain; Department of Neurology (Y.W.), Affiliated Hospital of Jining Medical University, Shandong Province, China; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Clinical and Research Institute, Milan University, Rozzano, Italy; Nuffield Department of Clinical Neurosciences (S.R.), University of Oxford and Oxford University Hospitals NHS Foundation Trust, UK; Department of Neurosciences, Ophthalmology, Rehabilitation, Genetics and Maternal Sciences (A.S.), University of Genova; IRCCS San Martino Hospital (A.S.), Genova, Italy; Department of Neurology (J.P.), Hospital Clínico de Santiago, Santiago de Compostela (A Coruña), Spain; Department of Neurology (F.H.V.), Franciscus Vlietland Hospital (location: Franciscus Gasthuis), Rotterdam, the Netherlands; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (V.G.), Montefiore Medical Centre, Bronx, NY; Department of Neurology (G. Cavaletti), University Milano-Bicocca, Monza, Italy; Department of Neurology (G.G.-G.), Hospital Universitario Infanta Sofía, San Sebastián de los Reyes, Spain; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, Buenos Aires, Argentina; Department of Neurology (L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (H.D.K.), University Health Network, University of Toronto, Canada; Department of Neurology (E.D.), University Hospital of Larissa, Greece; Department of Neurology, Reference Centre for NMD (S.A.), CHU Timone, Marseille, France; Department of Neurology (A.J.v.d.K., F.E.), Amsterdam University Medical Centre, University of Amsterdam, Neuroscience Institute, Netherlands Neuromuscular Centre, Euro-NMD; Department of Neurology (P.W.W.), Haga Hospital, Den Haag; Department of Neurology (H.J.G.), Reinier de Graaf Hospital, Delft, the Netherlands; Department of Neurology (R.D.M.H.), King's College Hospital, London; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, UK; Department of Neurology (K.A.S.), University of Texas Health Science Centre at Houston; Department of Neurology (S. Karafiath), University of Utah School of Medicine, Salt Lake City; Department of Neurology (M.V.), Lahey Hospital and Medical Center, Tufts University School of Medicine, Burlington, MA; Department of Neurology (G.A.), Mental Health and Sensory Organs (NESMOS), University of Rome 'Sapienza,' Sant'Andrea Hospital, Rome, Italy; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Canada; Department of Neurology (C.G.F.), Maastricht University Medical Centre, the Netherlands; Department of Neurology (M.B.), Leeds Teaching Hospitals; Department of Neurology (R.C.R.), Addenbrooke's Hospital, Cambridge, UK; Department of Neurology (N.J.S.), University at Buffalo Jacobs School of Medicine and Biomedical Sciences, NY; Department of Neurology (R.F.), Scientific Institute San Raffaele, Milan, Italy; Department of Neurology (G.W.v.D.), Canisius Wilhelmina Hospital, Nijmegen; Department of Neurology (M.P.J.G.), Jeroen Bosch Hospital, 's-Hertogenbosch; Department of Neurology (C.S.M.S.), Leiden University Medical Centre, the Netherlands; and Department of Neurology (K.C.G.), St. Elizabeth's Medical Centre, Tufts University, School of Medicine, Boston, MA.; Nobile-Orazio E; From the Departments of Neurology (A.Y.D., C.W., B.v.d.B., C.V., J.R., S.E.L., K.K., B.C.J.), Public Health (H.F.L.), and Immunology (B.C.J.), Erasmus MC, University Medical Centre Rotterdam; Department of Neurology (C.W., J.P.A.S.), Maasstad Hospital, Rotterdam, the Netherlands; Laboratory of Gut-Brain Signaling (B.I., N.P., Z.I.), Laboratory Sciences and Services Division, Dhaka, Bangladesh; Department of Neurology (A.D., G. Chavada, H.J.W.), College of Medical, Veterinary and Life Sciences, University of Glasgow, UK; Department of Neurology (Y.Y., S. Kusunoki), Kindai University Faculty of Medicine, Osaka-Sayama City, Osaka, Japan; Department of Neurology (M.M.D.), University of Kansas Medical Center, Kansas City; Department of Neurology (W.W., N.K.), University of Vermont Medical Centre, Burlington; National Institute of Neurosciences and Hospital (Q.D.M.), Agargoan, Bangladesh; Department of Neurology (T.H.), Aarhus University Hospital; Department of Neurology (S.H.S.), Odense University Hospital and University of Southern Denmark, Odense, Denmark; Department of Neurology, Neuromuscular Unit (C.C.), Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Department of Neurology (K.B.), Groote Schuur Hospital, University of Cape Town, South Africa; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle, UK; Department of Neurology (B.v.d.B., C.J.G.), Franciscus Vlietland Hospital, Schiedam, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (S. Kuwabara), Chiba University, Japan; Department of Neurology (P.V.d.B.), Neuromuscular Reference Centre, University Hospital Saint-Luc, University of Louvain, Brussels, Belgium; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Dysimmune Neuropathies Unit, Department of Systems Medicine (G.A.M.), Tor Vergata University Hospital, Rome, Italy; Department of Medicine (N.S.), University of Malaya, Kuala Lumpur; Department of Neurology (G.G.), University Hospital of Modena, Italy; Department of Clinical Neurophysiology, Reference Centre for NMD (Y.P.), CHU Nantes, France; Department of Neurology (J.B.), Saarland University Medical School, Homburg-Saarland (previous affiliation); MVZ Pfalzklinikum (J.B.), Kusel, Germany (current affiliation); Department of Neurology (K.K., R.P.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (C.M.), Hospital Británico, Buenos Aires, Argentina; Department of Neurology (M.J.S.T.), Hospital Marques de Valdecilla, Santander; Department of Neurology (L.Q., I.I.), Hospital de la Santa Creu i Santa Pau, U.A.B. CIBERER and ERN-NMD, Barcelona, Spain; Department of Neurology (Y.W.), Affiliated Hospital of Jining Medical University, Shandong Province, China; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Clinical and Research Institute, Milan University, Rozzano, Italy; Nuffield Department of Clinical Neurosciences (S.R.), University of Oxford and Oxford University Hospitals NHS Foundation Trust, UK; Department of Neurosciences, Ophthalmology, Rehabilitation, Genetics and Maternal Sciences (A.S.), University of Genova; IRCCS San Martino Hospital (A.S.), Genova, Italy; Department of Neurology (J.P.), Hospital Clínico de Santiago, Santiago de Compostela (A Coruña), Spain; Department of Neurology (F.H.V.), Franciscus Vlietland Hospital (location: Franciscus Gasthuis), Rotterdam, the Netherlands; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (V.G.), Montefiore Medical Centre, Bronx, NY; Department of Neurology (G. Cavaletti), University Milano-Bicocca, Monza, Italy; Department of Neurology (G.G.-G.), Hospital Universitario Infanta Sofía, San Sebastián de los Reyes, Spain; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, Buenos Aires, Argentina; Department of Neurology (L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (H.D.K.), University Health Network, University of Toronto, Canada; Department of Neurology (E.D.), University Hospital of Larissa, Greece; Department of Neurology, Reference Centre for NMD (S.A.), CHU Timone, Marseille, France; Department of Neurology (A.J.v.d.K., F.E.), Amsterdam University Medical Centre, University of Amsterdam, Neuroscience Institute, Netherlands Neuromuscular Centre, Euro-NMD; Department of Neurology (P.W.W.), Haga Hospital, Den Haag; Department of Neurology (H.J.G.), Reinier de Graaf Hospital, Delft, the Netherlands; Department of Neurology (R.D.M.H.), King's College Hospital, London; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, UK; Department of Neurology (K.A.S.), University of Texas Health Science Centre at Houston; Department of Neurology (S. Karafiath), University of Utah School of Medicine, Salt Lake City; Department of Neurology (M.V.), Lahey Hospital and Medical Center, Tufts University School of Medicine, Burlington, MA; Department of Neurology (G.A.), Mental Health and Sensory Organs (NESMOS), University of Rome 'Sapienza,' Sant'Andrea Hospital, Rome, Italy; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Canada; Department of Neurology (C.G.F.), Maastricht University Medical Centre, the Netherlands; Department of Neurology (M.B.), Leeds Teaching Hospitals; Department of Neurology (R.C.R.), Addenbrooke's Hospital, Cambridge, UK; Department of Neurology (N.J.S.), University at Buffalo Jacobs School of Medicine and Biomedical Sciences, NY; Department of Neurology (R.F.), Scientific Institute San Raffaele, Milan, Italy; Department of Neurology (G.W.v.D.), Canisius Wilhelmina Hospital, Nijmegen; Department of Neurology (M.P.J.G.), Jeroen Bosch Hospital, 's-Hertogenbosch; Department of Neurology (C.S.M.S.), Leiden University Medical Centre, the Netherlands; and Department of Neurology (K.C.G.), St. Elizabeth's Medical Centre, Tufts University, School of Medicine, Boston, MA.; Rinaldi S; From the Departments of Neurology (A.Y.D., C.W., B.v.d.B., C.V., J.R., S.E.L., K.K., B.C.J.), Public Health (H.F.L.), and Immunology (B.C.J.), Erasmus MC, University Medical Centre Rotterdam; Department of Neurology (C.W., J.P.A.S.), Maasstad Hospital, Rotterdam, the Netherlands; Laboratory of Gut-Brain Signaling (B.I., N.P., Z.I.), Laboratory Sciences and Services Division, Dhaka, Bangladesh; Department of Neurology (A.D., G. Chavada, H.J.W.), College of Medical, Veterinary and Life Sciences, University of Glasgow, UK; Department of Neurology (Y.Y., S. Kusunoki), Kindai University Faculty of Medicine, Osaka-Sayama City, Osaka, Japan; Department of Neurology (M.M.D.), University of Kansas Medical Center, Kansas City; Department of Neurology (W.W., N.K.), University of Vermont Medical Centre, Burlington; National Institute of Neurosciences and Hospital (Q.D.M.), Agargoan, Bangladesh; Department of Neurology (T.H.), Aarhus University Hospital; Department of Neurology (S.H.S.), Odense University Hospital and University of Southern Denmark, Odense, Denmark; Department of Neurology, Neuromuscular Unit (C.C.), Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Department of Neurology (K.B.), Groote Schuur Hospital, University of Cape Town, South Africa; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle, UK; Department of Neurology (B.v.d.B., C.J.G.), Franciscus Vlietland Hospital, Schiedam, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (S. Kuwabara), Chiba University, Japan; Department of Neurology (P.V.d.B.), Neuromuscular Reference Centre, University Hospital Saint-Luc, University of Louvain, Brussels, Belgium; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Dysimmune Neuropathies Unit, Department of Systems Medicine (G.A.M.), Tor Vergata University Hospital, Rome, Italy; Department of Medicine (N.S.), University of Malaya, Kuala Lumpur; Department of Neurology (G.G.), University Hospital of Modena, Italy; Department of Clinical Neurophysiology, Reference Centre for NMD (Y.P.), CHU Nantes, France; Department of Neurology (J.B.), Saarland University Medical School, Homburg-Saarland (previous affiliation); MVZ Pfalzklinikum (J.B.), Kusel, Germany (current affiliation); Department of Neurology (K.K., R.P.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (C.M.), Hospital Británico, Buenos Aires, Argentina; Department of Neurology (M.J.S.T.), Hospital Marques de Valdecilla, Santander; Department of Neurology (L.Q., I.I.), Hospital de la Santa Creu i Santa Pau, U.A.B. CIBERER and ERN-NMD, Barcelona, Spain; Department of Neurology (Y.W.), Affiliated Hospital of Jining Medical University, Shandong Province, China; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Clinical and Research Institute, Milan University, Rozzano, Italy; Nuffield Department of Clinical Neurosciences (S.R.), University of Oxford and Oxford University Hospitals NHS Foundation Trust, UK; Department of Neurosciences, Ophthalmology, Rehabilitation, Genetics and Maternal Sciences (A.S.), University of Genova; IRCCS San Martino Hospital (A.S.), Genova, Italy; Department of Neurology (J.P.), Hospital Clínico de Santiago, Santiago de Compostela (A Coruña), Spain; Department of Neurology (F.H.V.), Franciscus Vlietland Hospital (location: Franciscus Gasthuis), Rotterdam, the Netherlands; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (V.G.), Montefiore Medical Centre, Bronx, NY; Department of Neurology (G. Cavaletti), University Milano-Bicocca, Monza, Italy; Department of Neurology (G.G.-G.), Hospital Universitario Infanta Sofía, San Sebastián de los Reyes, Spain; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, Buenos Aires, Argentina; Department of Neurology (L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (H.D.K.), University Health Network, University of Toronto, Canada; Department of Neurology (E.D.), University Hospital of Larissa, Greece; Department of Neurology, Reference Centre for NMD (S.A.), CHU Timone, Marseille, France; Department of Neurology (A.J.v.d.K., F.E.), Amsterdam University Medical Centre, University of Amsterdam, Neuroscience Institute, Netherlands Neuromuscular Centre, Euro-NMD; Department of Neurology (P.W.W.), Haga Hospital, Den Haag; Department of Neurology (H.J.G.), Reinier de Graaf Hospital, Delft, the Netherlands; Department of Neurology (R.D.M.H.), King's College Hospital, London; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, UK; Department of Neurology (K.A.S.), University of Texas Health Science Centre at Houston; Department of Neurology (S. Karafiath), University of Utah School of Medicine, Salt Lake City; Department of Neurology (M.V.), Lahey Hospital and Medical Center, Tufts University School of Medicine, Burlington, MA; Department of Neurology (G.A.), Mental Health and Sensory Organs (NESMOS), University of Rome 'Sapienza,' Sant'Andrea Hospital, Rome, Italy; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Canada; Department of Neurology (C.G.F.), Maastricht University Medical Centre, the Netherlands; Department of Neurology (M.B.), Leeds Teaching Hospitals; Department of Neurology (R.C.R.), Addenbrooke's Hospital, Cambridge, UK; Department of Neurology (N.J.S.), University at Buffalo Jacobs School of Medicine and Biomedical Sciences, NY; Department of Neurology (R.F.), Scientific Institute San Raffaele, Milan, Italy; Department of Neurology (G.W.v.D.), Canisius Wilhelmina Hospital, Nijmegen; Department of Neurology (M.P.J.G.), Jeroen Bosch Hospital, 's-Hertogenbosch; Department of Neurology (C.S.M.S.), Leiden University Medical Centre, the Netherlands; and Department of Neurology (K.C.G.), St. Elizabeth's Medical Centre, Tufts University, School of Medicine, Boston, MA.; Schenone A; From the Departments of Neurology (A.Y.D., C.W., B.v.d.B., C.V., J.R., S.E.L., K.K., B.C.J.), Public Health (H.F.L.), and Immunology (B.C.J.), Erasmus MC, University Medical Centre Rotterdam; Department of Neurology (C.W., J.P.A.S.), Maasstad Hospital, Rotterdam, the Netherlands; Laboratory of Gut-Brain Signaling (B.I., N.P., Z.I.), Laboratory Sciences and Services Division, Dhaka, Bangladesh; Department of Neurology (A.D., G. Chavada, H.J.W.), College of Medical, Veterinary and Life Sciences, University of Glasgow, UK; Department of Neurology (Y.Y., S. Kusunoki), Kindai University Faculty of Medicine, Osaka-Sayama City, Osaka, Japan; Department of Neurology (M.M.D.), University of Kansas Medical Center, Kansas City; Department of Neurology (W.W., N.K.), University of Vermont Medical Centre, Burlington; National Institute of Neurosciences and Hospital (Q.D.M.), Agargoan, Bangladesh; Department of Neurology (T.H.), Aarhus University Hospital; Department of Neurology (S.H.S.), Odense University Hospital and University of Southern Denmark, Odense, Denmark; Department of Neurology, Neuromuscular Unit (C.C.), Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Department of Neurology (K.B.), Groote Schuur Hospital, University of Cape Town, South Africa; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle, UK; Department of Neurology (B.v.d.B., C.J.G.), Franciscus Vlietland Hospital, Schiedam, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (S. Kuwabara), Chiba University, Japan; Department of Neurology (P.V.d.B.), Neuromuscular Reference Centre, University Hospital Saint-Luc, University of Louvain, Brussels, Belgium; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Dysimmune Neuropathies Unit, Department of Systems Medicine (G.A.M.), Tor Vergata University Hospital, Rome, Italy; Department of Medicine (N.S.), University of Malaya, Kuala Lumpur; Department of Neurology (G.G.), University Hospital of Modena, Italy; Department of Clinical Neurophysiology, Reference Centre for NMD (Y.P.), CHU Nantes, France; Department of Neurology (J.B.), Saarland University Medical School, Homburg-Saarland (previous affiliation); MVZ Pfalzklinikum (J.B.), Kusel, Germany (current affiliation); Department of Neurology (K.K., R.P.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (C.M.), Hospital Británico, Buenos Aires, Argentina; Department of Neurology (M.J.S.T.), Hospital Marques de Valdecilla, Santander; Department of Neurology (L.Q., I.I.), Hospital de la Santa Creu i Santa Pau, U.A.B. CIBERER and ERN-NMD, Barcelona, Spain; Department of Neurology (Y.W.), Affiliated Hospital of Jining Medical University, Shandong Province, China; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Clinical and Research Institute, Milan University, Rozzano, Italy; Nuffield Department of Clinical Neurosciences (S.R.), University of Oxford and Oxford University Hospitals NHS Foundation Trust, UK; Department of Neurosciences, Ophthalmology, Rehabilitation, Genetics and Maternal Sciences (A.S.), University of Genova; IRCCS San Martino Hospital (A.S.), Genova, Italy; Department of Neurology (J.P.), Hospital Clínico de Santiago, Santiago de Compostela (A Coruña), Spain; Department of Neurology (F.H.V.), Franciscus Vlietland Hospital (location: Franciscus Gasthuis), Rotterdam, the Netherlands; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (V.G.), Montefiore Medical Centre, Bronx, NY; Department of Neurology (G. Cavaletti), University Milano-Bicocca, Monza, Italy; Department of Neurology (G.G.-G.), Hospital Universitario Infanta Sofía, San Sebastián de los Reyes, Spain; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, Buenos Aires, Argentina; Department of Neurology (L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (H.D.K.), University Health Network, University of Toronto, Canada; Department of Neurology (E.D.), University Hospital of Larissa, Greece; Department of Neurology, Reference Centre for NMD (S.A.), CHU Timone, Marseille, France; Department of Neurology (A.J.v.d.K., F.E.), Amsterdam University Medical Centre, University of Amsterdam, Neuroscience Institute, Netherlands Neuromuscular Centre, Euro-NMD; Department of Neurology (P.W.W.), Haga Hospital, Den Haag; Department of Neurology (H.J.G.), Reinier de Graaf Hospital, Delft, the Netherlands; Department of Neurology (R.D.M.H.), King's College Hospital, London; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, UK; Department of Neurology (K.A.S.), University of Texas Health Science Centre at Houston; Department of Neurology (S. Karafiath), University of Utah School of Medicine, Salt Lake City; Department of Neurology (M.V.), Lahey Hospital and Medical Center, Tufts University School of Medicine, Burlington, MA; Department of Neurology (G.A.), Mental Health and Sensory Organs (NESMOS), University of Rome 'Sapienza,' Sant'Andrea Hospital, Rome, Italy; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Canada; Department of Neurology (C.G.F.), Maastricht University Medical Centre, the Netherlands; Department of Neurology (M.B.), Leeds Teaching Hospitals; Department of Neurology (R.C.R.), Addenbrooke's Hospital, Cambridge, UK; Department of Neurology (N.J.S.), University at Buffalo Jacobs School of Medicine and Biomedical Sciences, NY; Department of Neurology (R.F.), Scientific Institute San Raffaele, Milan, Italy; Department of Neurology (G.W.v.D.), Canisius Wilhelmina Hospital, Nijmegen; Department of Neurology (M.P.J.G.), Jeroen Bosch Hospital, 's-Hertogenbosch; Department of Neurology (C.S.M.S.), Leiden University Medical Centre, the Netherlands; and Department of Neurology (K.C.G.), St. Elizabeth's Medical Centre, Tufts University, School of Medicine, Boston, MA.; Pardo J; From the Departments of Neurology (A.Y.D., C.W., B.v.d.B., C.V., J.R., S.E.L., K.K., B.C.J.), Public Health (H.F.L.), and Immunology (B.C.J.), Erasmus MC, University Medical Centre Rotterdam; Department of Neurology (C.W., J.P.A.S.), Maasstad Hospital, Rotterdam, the Netherlands; Laboratory of Gut-Brain Signaling (B.I., N.P., Z.I.), Laboratory Sciences and Services Division, Dhaka, Bangladesh; Department of Neurology (A.D., G. Chavada, H.J.W.), College of Medical, Veterinary and Life Sciences, University of Glasgow, UK; Department of Neurology (Y.Y., S. Kusunoki), Kindai University Faculty of Medicine, Osaka-Sayama City, Osaka, Japan; Department of Neurology (M.M.D.), University of Kansas Medical Center, Kansas City; Department of Neurology (W.W., N.K.), University of Vermont Medical Centre, Burlington; National Institute of Neurosciences and Hospital (Q.D.M.), Agargoan, Bangladesh; Department of Neurology (T.H.), Aarhus University Hospital; Department of Neurology (S.H.S.), Odense University Hospital and University of Southern Denmark, Odense, Denmark; Department of Neurology, Neuromuscular Unit (C.C.), Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Department of Neurology (K.B.), Groote Schuur Hospital, University of Cape Town, South Africa; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle, UK; Department of Neurology (B.v.d.B., C.J.G.), Franciscus Vlietland Hospital, Schiedam, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (S. Kuwabara), Chiba University, Japan; Department of Neurology (P.V.d.B.), Neuromuscular Reference Centre, University Hospital Saint-Luc, University of Louvain, Brussels, Belgium; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Dysimmune Neuropathies Unit, Department of Systems Medicine (G.A.M.), Tor Vergata University Hospital, Rome, Italy; Department of Medicine (N.S.), University of Malaya, Kuala Lumpur; Department of Neurology (G.G.), University Hospital of Modena, Italy; Department of Clinical Neurophysiology, Reference Centre for NMD (Y.P.), CHU Nantes, France; Department of Neurology (J.B.), Saarland University Medical School, Homburg-Saarland (previous affiliation); MVZ Pfalzklinikum (J.B.), Kusel, Germany (current affiliation); Department of Neurology (K.K., R.P.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (C.M.), Hospital Británico, Buenos Aires, Argentina; Department of Neurology (M.J.S.T.), Hospital Marques de Valdecilla, Santander; Department of Neurology (L.Q., I.I.), Hospital de la Santa Creu i Santa Pau, U.A.B. CIBERER and ERN-NMD, Barcelona, Spain; Department of Neurology (Y.W.), Affiliated Hospital of Jining Medical University, Shandong Province, China; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Clinical and Research Institute, Milan University, Rozzano, Italy; Nuffield Department of Clinical Neurosciences (S.R.), University of Oxford and Oxford University Hospitals NHS Foundation Trust, UK; Department of Neurosciences, Ophthalmology, Rehabilitation, Genetics and Maternal Sciences (A.S.), University of Genova; IRCCS San Martino Hospital (A.S.), Genova, Italy; Department of Neurology (J.P.), Hospital Clínico de Santiago, Santiago de Compostela (A Coruña), Spain; Department of Neurology (F.H.V.), Franciscus Vlietland Hospital (location: Franciscus Gasthuis), Rotterdam, the Netherlands; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (V.G.), Montefiore Medical Centre, Bronx, NY; Department of Neurology (G. Cavaletti), University Milano-Bicocca, Monza, Italy; Department of Neurology (G.G.-G.), Hospital Universitario Infanta Sofía, San Sebastián de los Reyes, Spain; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, Buenos Aires, Argentina; Department of Neurology (L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (H.D.K.), University Health Network, University of Toronto, Canada; Department of Neurology (E.D.), University Hospital of Larissa, Greece; Department of Neurology, Reference Centre for NMD (S.A.), CHU Timone, Marseille, France; Department of Neurology (A.J.v.d.K., F.E.), Amsterdam University Medical Centre, University of Amsterdam, Neuroscience Institute, Netherlands Neuromuscular Centre, Euro-NMD; Department of Neurology (P.W.W.), Haga Hospital, Den Haag; Department of Neurology (H.J.G.), Reinier de Graaf Hospital, Delft, the Netherlands; Department of Neurology (R.D.M.H.), King's College Hospital, London; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, UK; Department of Neurology (K.A.S.), University of Texas Health Science Centre at Houston; Department of Neurology (S. Karafiath), University of Utah School of Medicine, Salt Lake City; Department of Neurology (M.V.), Lahey Hospital and Medical Center, Tufts University School of Medicine, Burlington, MA; Department of Neurology (G.A.), Mental Health and Sensory Organs (NESMOS), University of Rome 'Sapienza,' Sant'Andrea Hospital, Rome, Italy; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Canada; Department of Neurology (C.G.F.), Maastricht University Medical Centre, the Netherlands; Department of Neurology (M.B.), Leeds Teaching Hospitals; Department of Neurology (R.C.R.), Addenbrooke's Hospital, Cambridge, UK; Department of Neurology (N.J.S.), University at Buffalo Jacobs School of Medicine and Biomedical Sciences, NY; Department of Neurology (R.F.), Scientific Institute San Raffaele, Milan, Italy; Department of Neurology (G.W.v.D.), Canisius Wilhelmina Hospital, Nijmegen; Department of Neurology (M.P.J.G.), Jeroen Bosch Hospital, 's-Hertogenbosch; Department of Neurology (C.S.M.S.), Leiden University Medical Centre, the Netherlands; and Department of Neurology (K.C.G.), St. Elizabeth's Medical Centre, Tufts University, School of Medicine, Boston, MA.; Vermeij FH; From the Departments of Neurology (A.Y.D., C.W., B.v.d.B., C.V., J.R., S.E.L., K.K., B.C.J.), Public Health (H.F.L.), and Immunology (B.C.J.), Erasmus MC, University Medical Centre Rotterdam; Department of Neurology (C.W., J.P.A.S.), Maasstad Hospital, Rotterdam, the Netherlands; Laboratory of Gut-Brain Signaling (B.I., N.P., Z.I.), Laboratory Sciences and Services Division, Dhaka, Bangladesh; Department of Neurology (A.D., G. Chavada, H.J.W.), College of Medical, Veterinary and Life Sciences, University of Glasgow, UK; Department of Neurology (Y.Y., S. Kusunoki), Kindai University Faculty of Medicine, Osaka-Sayama City, Osaka, Japan; Department of Neurology (M.M.D.), University of Kansas Medical Center, Kansas City; Department of Neurology (W.W., N.K.), University of Vermont Medical Centre, Burlington; National Institute of Neurosciences and Hospital (Q.D.M.), Agargoan, Bangladesh; Department of Neurology (T.H.), Aarhus University Hospital; Department of Neurology (S.H.S.), Odense University Hospital and University of Southern Denmark, Odense, Denmark; Department of Neurology, Neuromuscular Unit (C.C.), Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Department of Neurology (K.B.), Groote Schuur Hospital, University of Cape Town, South Africa; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle, UK; Department of Neurology (B.v.d.B., C.J.G.), Franciscus Vlietland Hospital, Schiedam, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (S. Kuwabara), Chiba University, Japan; Department of Neurology (P.V.d.B.), Neuromuscular Reference Centre, University Hospital Saint-Luc, University of Louvain, Brussels, Belgium; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Dysimmune Neuropathies Unit, Department of Systems Medicine (G.A.M.), Tor Vergata University Hospital, Rome, Italy; Department of Medicine (N.S.), University of Malaya, Kuala Lumpur; Department of Neurology (G.G.), University Hospital of Modena, Italy; Department of Clinical Neurophysiology, Reference Centre for NMD (Y.P.), CHU Nantes, France; Department of Neurology (J.B.), Saarland University Medical School, Homburg-Saarland (previous affiliation); MVZ Pfalzklinikum (J.B.), Kusel, Germany (current affiliation); Department of Neurology (K.K., R.P.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (C.M.), Hospital Británico, Buenos Aires, Argentina; Department of Neurology (M.J.S.T.), Hospital Marques de Valdecilla, Santander; Department of Neurology (L.Q., I.I.), Hospital de la Santa Creu i Santa Pau, U.A.B. CIBERER and ERN-NMD, Barcelona, Spain; Department of Neurology (Y.W.), Affiliated Hospital of Jining Medical University, Shandong Province, China; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Clinical and Research Institute, Milan University, Rozzano, Italy; Nuffield Department of Clinical Neurosciences (S.R.), University of Oxford and Oxford University Hospitals NHS Foundation Trust, UK; Department of Neurosciences, Ophthalmology, Rehabilitation, Genetics and Maternal Sciences (A.S.), University of Genova; IRCCS San Martino Hospital (A.S.), Genova, Italy; Department of Neurology (J.P.), Hospital Clínico de Santiago, Santiago de Compostela (A Coruña), Spain; Department of Neurology (F.H.V.), Franciscus Vlietland Hospital (location: Franciscus Gasthuis), Rotterdam, the Netherlands; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (V.G.), Montefiore Medical Centre, Bronx, NY; Department of Neurology (G. Cavaletti), University Milano-Bicocca, Monza, Italy; Department of Neurology (G.G.-G.), Hospital Universitario Infanta Sofía, San Sebastián de los Reyes, Spain; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, Buenos Aires, Argentina; Department of Neurology (L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (H.D.K.), University Health Network, University of Toronto, Canada; Department of Neurology (E.D.), University Hospital of Larissa, Greece; Department of Neurology, Reference Centre for NMD (S.A.), CHU Timone, Marseille, France; Department of Neurology (A.J.v.d.K., F.E.), Amsterdam University Medical Centre, University of Amsterdam, Neuroscience Institute, Netherlands Neuromuscular Centre, Euro-NMD; Department of Neurology (P.W.W.), Haga Hospital, Den Haag; Department of Neurology (H.J.G.), Reinier de Graaf Hospital, Delft, the Netherlands; Department of Neurology (R.D.M.H.), King's College Hospital, London; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, UK; Department of Neurology (K.A.S.), University of Texas Health Science Centre at Houston; Department of Neurology (S. Karafiath), University of Utah School of Medicine, Salt Lake City; Department of Neurology (M.V.), Lahey Hospital and Medical Center, Tufts University School of Medicine, Burlington, MA; Department of Neurology (G.A.), Mental Health and Sensory Organs (NESMOS), University of Rome 'Sapienza,' Sant'Andrea Hospital, Rome, Italy; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Canada; Department of Neurology (C.G.F.), Maastricht University Medical Centre, the Netherlands; Department of Neurology (M.B.), Leeds Teaching Hospitals; Department of Neurology (R.C.R.), Addenbrooke's Hospital, Cambridge, UK; Department of Neurology (N.J.S.), University at Buffalo Jacobs School of Medicine and Biomedical Sciences, NY; Department of Neurology (R.F.), Scientific Institute San Raffaele, Milan, Italy; Department of Neurology (G.W.v.D.), Canisius Wilhelmina Hospital, Nijmegen; Department of Neurology (M.P.J.G.), Jeroen Bosch Hospital, 's-Hertogenbosch; Department of Neurology (C.S.M.S.), Leiden University Medical Centre, the Netherlands; and Department of Neurology (K.C.G.), St. Elizabeth's Medical Centre, Tufts University, School of Medicine, Boston, MA.; Lehmann HC; From the Departments of Neurology (A.Y.D., C.W., B.v.d.B., C.V., J.R., S.E.L., K.K., B.C.J.), Public Health (H.F.L.), and Immunology (B.C.J.), Erasmus MC, University Medical Centre Rotterdam; Department of Neurology (C.W., J.P.A.S.), Maasstad Hospital, Rotterdam, the Netherlands; Laboratory of Gut-Brain Signaling (B.I., N.P., Z.I.), Laboratory Sciences and Services Division, Dhaka, Bangladesh; Department of Neurology (A.D., G. Chavada, H.J.W.), College of Medical, Veterinary and Life Sciences, University of Glasgow, UK; Department of Neurology (Y.Y., S. Kusunoki), Kindai University Faculty of Medicine, Osaka-Sayama City, Osaka, Japan; Department of Neurology (M.M.D.), University of Kansas Medical Center, Kansas City; Department of Neurology (W.W., N.K.), University of Vermont Medical Centre, Burlington; National Institute of Neurosciences and Hospital (Q.D.M.), Agargoan, Bangladesh; Department of Neurology (T.H.), Aarhus University Hospital; Department of Neurology (S.H.S.), Odense University Hospital and University of Southern Denmark, Odense, Denmark; Department of Neurology, Neuromuscular Unit (C.C.), Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Department of Neurology (K.B.), Groote Schuur Hospital, University of Cape Town, South Africa; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle, UK; Department of Neurology (B.v.d.B., C.J.G.), Franciscus Vlietland Hospital, Schiedam, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (S. Kuwabara), Chiba University, Japan; Department of Neurology (P.V.d.B.), Neuromuscular Reference Centre, University Hospital Saint-Luc, University of Louvain, Brussels, Belgium; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Dysimmune Neuropathies Unit, Department of Systems Medicine (G.A.M.), Tor Vergata University Hospital, Rome, Italy; Department of Medicine (N.S.), University of Malaya, Kuala Lumpur; Department of Neurology (G.G.), University Hospital of Modena, Italy; Department of Clinical Neurophysiology, Reference Centre for NMD (Y.P.), CHU Nantes, France; Department of Neurology (J.B.), Saarland University Medical School, Homburg-Saarland (previous affiliation); MVZ Pfalzklinikum (J.B.), Kusel, Germany (current affiliation); Department of Neurology (K.K., R.P.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (C.M.), Hospital Británico, Buenos Aires, Argentina; Department of Neurology (M.J.S.T.), Hospital Marques de Valdecilla, Santander; Department of Neurology (L.Q., I.I.), Hospital de la Santa Creu i Santa Pau, U.A.B. CIBERER and ERN-NMD, Barcelona, Spain; Department of Neurology (Y.W.), Affiliated Hospital of Jining Medical University, Shandong Province, China; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Clinical and Research Institute, Milan University, Rozzano, Italy; Nuffield Department of Clinical Neurosciences (S.R.), University of Oxford and Oxford University Hospitals NHS Foundation Trust, UK; Department of Neurosciences, Ophthalmology, Rehabilitation, Genetics and Maternal Sciences (A.S.), University of Genova; IRCCS San Martino Hospital (A.S.), Genova, Italy; Department of Neurology (J.P.), Hospital Clínico de Santiago, Santiago de Compostela (A Coruña), Spain; Department of Neurology (F.H.V.), Franciscus Vlietland Hospital (location: Franciscus Gasthuis), Rotterdam, the Netherlands; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (V.G.), Montefiore Medical Centre, Bronx, NY; Department of Neurology (G. Cavaletti), University Milano-Bicocca, Monza, Italy; Department of Neurology (G.G.-G.), Hospital Universitario Infanta Sofía, San Sebastián de los Reyes, Spain; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, Buenos Aires, Argentina; Department of Neurology (L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (H.D.K.), University Health Network, University of Toronto, Canada; Department of Neurology (E.D.), University Hospital of Larissa, Greece; Department of Neurology, Reference Centre for NMD (S.A.), CHU Timone, Marseille, France; Department of Neurology (A.J.v.d.K., F.E.), Amsterdam University Medical Centre, University of Amsterdam, Neuroscience Institute, Netherlands Neuromuscular Centre, Euro-NMD; Department of Neurology (P.W.W.), Haga Hospital, Den Haag; Department of Neurology (H.J.G.), Reinier de Graaf Hospital, Delft, the Netherlands; Department of Neurology (R.D.M.H.), King's College Hospital, London; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, UK; Department of Neurology (K.A.S.), University of Texas Health Science Centre at Houston; Department of Neurology (S. Karafiath), University of Utah School of Medicine, Salt Lake City; Department of Neurology (M.V.), Lahey Hospital and Medical Center, Tufts University School of Medicine, Burlington, MA; Department of Neurology (G.A.), Mental Health and Sensory Organs (NESMOS), University of Rome 'Sapienza,' Sant'Andrea Hospital, Rome, Italy; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Canada; Department of Neurology (C.G.F.), Maastricht University Medical Centre, the Netherlands; Department of Neurology (M.B.), Leeds Teaching Hospitals; Department of Neurology (R.C.R.), Addenbrooke's Hospital, Cambridge, UK; Department of Neurology (N.J.S.), University at Buffalo Jacobs School of Medicine and Biomedical Sciences, NY; Department of Neurology (R.F.), Scientific Institute San Raffaele, Milan, Italy; Department of Neurology (G.W.v.D.), Canisius Wilhelmina Hospital, Nijmegen; Department of Neurology (M.P.J.G.), Jeroen Bosch Hospital, 's-Hertogenbosch; Department of Neurology (C.S.M.S.), Leiden University Medical Centre, the Netherlands; and Department of Neurology (K.C.G.), St. Elizabeth's Medical Centre, Tufts University, School of Medicine, Boston, MA.; Granit V; From the Departments of Neurology (A.Y.D., C.W., B.v.d.B., C.V., J.R., S.E.L., K.K., B.C.J.), Public Health (H.F.L.), and Immunology (B.C.J.), Erasmus MC, University Medical Centre Rotterdam; Department of Neurology (C.W., J.P.A.S.), Maasstad Hospital, Rotterdam, the Netherlands; Laboratory of Gut-Brain Signaling (B.I., N.P., Z.I.), Laboratory Sciences and Services Division, Dhaka, Bangladesh; Department of Neurology (A.D., G. Chavada, H.J.W.), College of Medical, Veterinary and Life Sciences, University of Glasgow, UK; Department of Neurology (Y.Y., S. Kusunoki), Kindai University Faculty of Medicine, Osaka-Sayama City, Osaka, Japan; Department of Neurology (M.M.D.), University of Kansas Medical Center, Kansas City; Department of Neurology (W.W., N.K.), University of Vermont Medical Centre, Burlington; National Institute of Neurosciences and Hospital (Q.D.M.), Agargoan, Bangladesh; Department of Neurology (T.H.), Aarhus University Hospital; Department of Neurology (S.H.S.), Odense University Hospital and University of Southern Denmark, Odense, Denmark; Department of Neurology, Neuromuscular Unit (C.C.), Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Department of Neurology (K.B.), Groote Schuur Hospital, University of Cape Town, South Africa; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle, UK; Department of Neurology (B.v.d.B., C.J.G.), Franciscus Vlietland Hospital, Schiedam, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (S. Kuwabara), Chiba University, Japan; Department of Neurology (P.V.d.B.), Neuromuscular Reference Centre, University Hospital Saint-Luc, University of Louvain, Brussels, Belgium; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Dysimmune Neuropathies Unit, Department of Systems Medicine (G.A.M.), Tor Vergata University Hospital, Rome, Italy; Department of Medicine (N.S.), University of Malaya, Kuala Lumpur; Department of Neurology (G.G.), University Hospital of Modena, Italy; Department of Clinical Neurophysiology, Reference Centre for NMD (Y.P.), CHU Nantes, France; Department of Neurology (J.B.), Saarland University Medical School, Homburg-Saarland (previous affiliation); MVZ Pfalzklinikum (J.B.), Kusel, Germany (current affiliation); Department of Neurology (K.K., R.P.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (C.M.), Hospital Británico, Buenos Aires, Argentina; Department of Neurology (M.J.S.T.), Hospital Marques de Valdecilla, Santander; Department of Neurology (L.Q., I.I.), Hospital de la Santa Creu i Santa Pau, U.A.B. CIBERER and ERN-NMD, Barcelona, Spain; Department of Neurology (Y.W.), Affiliated Hospital of Jining Medical University, Shandong Province, China; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Clinical and Research Institute, Milan University, Rozzano, Italy; Nuffield Department of Clinical Neurosciences (S.R.), University of Oxford and Oxford University Hospitals NHS Foundation Trust, UK; Department of Neurosciences, Ophthalmology, Rehabilitation, Genetics and Maternal Sciences (A.S.), University of Genova; IRCCS San Martino Hospital (A.S.), Genova, Italy; Department of Neurology (J.P.), Hospital Clínico de Santiago, Santiago de Compostela (A Coruña), Spain; Department of Neurology (F.H.V.), Franciscus Vlietland Hospital (location: Franciscus Gasthuis), Rotterdam, the Netherlands; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (V.G.), Montefiore Medical Centre, Bronx, NY; Department of Neurology (G. Cavaletti), University Milano-Bicocca, Monza, Italy; Department of Neurology (G.G.-G.), Hospital Universitario Infanta Sofía, San Sebastián de los Reyes, Spain; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, Buenos Aires, Argentina; Department of Neurology (L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (H.D.K.), University Health Network, University of Toronto, Canada; Department of Neurology (E.D.), University Hospital of Larissa, Greece; Department of Neurology, Reference Centre for NMD (S.A.), CHU Timone, Marseille, France; Department of Neurology (A.J.v.d.K., F.E.), Amsterdam University Medical Centre, University of Amsterdam, Neuroscience Institute, Netherlands Neuromuscular Centre, Euro-NMD; Department of Neurology (P.W.W.), Haga Hospital, Den Haag; Department of Neurology (H.J.G.), Reinier de Graaf Hospital, Delft, the Netherlands; Department of Neurology (R.D.M.H.), King's College Hospital, London; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, UK; Department of Neurology (K.A.S.), University of Texas Health Science Centre at Houston; Department of Neurology (S. Karafiath), University of Utah School of Medicine, Salt Lake City; Department of Neurology (M.V.), Lahey Hospital and Medical Center, Tufts University School of Medicine, Burlington, MA; Department of Neurology (G.A.), Mental Health and Sensory Organs (NESMOS), University of Rome 'Sapienza,' Sant'Andrea Hospital, Rome, Italy; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Canada; Department of Neurology (C.G.F.), Maastricht University Medical Centre, the Netherlands; Department of Neurology (M.B.), Leeds Teaching Hospitals; Department of Neurology (R.C.R.), Addenbrooke's Hospital, Cambridge, UK; Department of Neurology (N.J.S.), University at Buffalo Jacobs School of Medicine and Biomedical Sciences, NY; Department of Neurology (R.F.), Scientific Institute San Raffaele, Milan, Italy; Department of Neurology (G.W.v.D.), Canisius Wilhelmina Hospital, Nijmegen; Department of Neurology (M.P.J.G.), Jeroen Bosch Hospital, 's-Hertogenbosch; Department of Neurology (C.S.M.S.), Leiden University Medical Centre, the Netherlands; and Department of Neurology (K.C.G.), St. Elizabeth's Medical Centre, Tufts University, School of Medicine, Boston, MA.; Cavaletti G; From the Departments of Neurology (A.Y.D., C.W., B.v.d.B., C.V., J.R., S.E.L., K.K., B.C.J.), Public Health (H.F.L.), and Immunology (B.C.J.), Erasmus MC, University Medical Centre Rotterdam; Department of Neurology (C.W., J.P.A.S.), Maasstad Hospital, Rotterdam, the Netherlands; Laboratory of Gut-Brain Signaling (B.I., N.P., Z.I.), Laboratory Sciences and Services Division, Dhaka, Bangladesh; Department of Neurology (A.D., G. Chavada, H.J.W.), College of Medical, Veterinary and Life Sciences, University of Glasgow, UK; Department of Neurology (Y.Y., S. Kusunoki), Kindai University Faculty of Medicine, Osaka-Sayama City, Osaka, Japan; Department of Neurology (M.M.D.), University of Kansas Medical Center, Kansas City; Department of Neurology (W.W., N.K.), University of Vermont Medical Centre, Burlington; National Institute of Neurosciences and Hospital (Q.D.M.), Agargoan, Bangladesh; Department of Neurology (T.H.), Aarhus University Hospital; Department of Neurology (S.H.S.), Odense University Hospital and University of Southern Denmark, Odense, Denmark; Department of Neurology, Neuromuscular Unit (C.C.), Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Department of Neurology (K.B.), Groote Schuur Hospital, University of Cape Town, South Africa; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle, UK; Department of Neurology (B.v.d.B., C.J.G.), Franciscus Vlietland Hospital, Schiedam, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (S. Kuwabara), Chiba University, Japan; Department of Neurology (P.V.d.B.), Neuromuscular Reference Centre, University Hospital Saint-Luc, University of Louvain, Brussels, Belgium; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Dysimmune Neuropathies Unit, Department of Systems Medicine (G.A.M.), Tor Vergata University Hospital, Rome, Italy; Department of Medicine (N.S.), University of Malaya, Kuala Lumpur; Department of Neurology (G.G.), University Hospital of Modena, Italy; Department of Clinical Neurophysiology, Reference Centre for NMD (Y.P.), CHU Nantes, France; Department of Neurology (J.B.), Saarland University Medical School, Homburg-Saarland (previous affiliation); MVZ Pfalzklinikum (J.B.), Kusel, Germany (current affiliation); Department of Neurology (K.K., R.P.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (C.M.), Hospital Británico, Buenos Aires, Argentina; Department of Neurology (M.J.S.T.), Hospital Marques de Valdecilla, Santander; Department of Neurology (L.Q., I.I.), Hospital de la Santa Creu i Santa Pau, U.A.B. CIBERER and ERN-NMD, Barcelona, Spain; Department of Neurology (Y.W.), Affiliated Hospital of Jining Medical University, Shandong Province, China; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Clinical and Research Institute, Milan University, Rozzano, Italy; Nuffield Department of Clinical Neurosciences (S.R.), University of Oxford and Oxford University Hospitals NHS Foundation Trust, UK; Department of Neurosciences, Ophthalmology, Rehabilitation, Genetics and Maternal Sciences (A.S.), University of Genova; IRCCS San Martino Hospital (A.S.), Genova, Italy; Department of Neurology (J.P.), Hospital Clínico de Santiago, Santiago de Compostela (A Coruña), Spain; Department of Neurology (F.H.V.), Franciscus Vlietland Hospital (location: Franciscus Gasthuis), Rotterdam, the Netherlands; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (V.G.), Montefiore Medical Centre, Bronx, NY; Department of Neurology (G. Cavaletti), University Milano-Bicocca, Monza, Italy; Department of Neurology (G.G.-G.), Hospital Universitario Infanta Sofía, San Sebastián de los Reyes, Spain; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, Buenos Aires, Argentina; Department of Neurology (L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (H.D.K.), University Health Network, University of Toronto, Canada; Department of Neurology (E.D.), University Hospital of Larissa, Greece; Department of Neurology, Reference Centre for NMD (S.A.), CHU Timone, Marseille, France; Department of Neurology (A.J.v.d.K., F.E.), Amsterdam University Medical Centre, University of Amsterdam, Neuroscience Institute, Netherlands Neuromuscular Centre, Euro-NMD; Department of Neurology (P.W.W.), Haga Hospital, Den Haag; Department of Neurology (H.J.G.), Reinier de Graaf Hospital, Delft, the Netherlands; Department of Neurology (R.D.M.H.), King's College Hospital, London; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, UK; Department of Neurology (K.A.S.), University of Texas Health Science Centre at Houston; Department of Neurology (S. Karafiath), University of Utah School of Medicine, Salt Lake City; Department of Neurology (M.V.), Lahey Hospital and Medical Center, Tufts University School of Medicine, Burlington, MA; Department of Neurology (G.A.), Mental Health and Sensory Organs (NESMOS), University of Rome 'Sapienza,' Sant'Andrea Hospital, Rome, Italy; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Canada; Department of Neurology (C.G.F.), Maastricht University Medical Centre, the Netherlands; Department of Neurology (M.B.), Leeds Teaching Hospitals; Department of Neurology (R.C.R.), Addenbrooke's Hospital, Cambridge, UK; Department of Neurology (N.J.S.), University at Buffalo Jacobs School of Medicine and Biomedical Sciences, NY; Department of Neurology (R.F.), Scientific Institute San Raffaele, Milan, Italy; Department of Neurology (G.W.v.D.), Canisius Wilhelmina Hospital, Nijmegen; Department of Neurology (M.P.J.G.), Jeroen Bosch Hospital, 's-Hertogenbosch; Department of Neurology (C.S.M.S.), Leiden University Medical Centre, the Netherlands; and Department of Neurology (K.C.G.), St. Elizabeth's Medical Centre, Tufts University, School of Medicine, Boston, MA.; Gutiérrez-Gutiérrez G; From the Departments of Neurology (A.Y.D., C.W., B.v.d.B., C.V., J.R., S.E.L., K.K., B.C.J.), Public Health (H.F.L.), and Immunology (B.C.J.), Erasmus MC, University Medical Centre Rotterdam; Department of Neurology (C.W., J.P.A.S.), Maasstad Hospital, Rotterdam, the Netherlands; Laboratory of Gut-Brain Signaling (B.I., N.P., Z.I.), Laboratory Sciences and Services Division, Dhaka, Bangladesh; Department of Neurology (A.D., G. Chavada, H.J.W.), College of Medical, Veterinary and Life Sciences, University of Glasgow, UK; Department of Neurology (Y.Y., S. Kusunoki), Kindai University Faculty of Medicine, Osaka-Sayama City, Osaka, Japan; Department of Neurology (M.M.D.), University of Kansas Medical Center, Kansas City; Department of Neurology (W.W., N.K.), University of Vermont Medical Centre, Burlington; National Institute of Neurosciences and Hospital (Q.D.M.), Agargoan, Bangladesh; Department of Neurology (T.H.), Aarhus University Hospital; Department of Neurology (S.H.S.), Odense University Hospital and University of Southern Denmark, Odense, Denmark; Department of Neurology, Neuromuscular Unit (C.C.), Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Department of Neurology (K.B.), Groote Schuur Hospital, University of Cape Town, South Africa; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle, UK; Department of Neurology (B.v.d.B., C.J.G.), Franciscus Vlietland Hospital, Schiedam, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (S. Kuwabara), Chiba University, Japan; Department of Neurology (P.V.d.B.), Neuromuscular Reference Centre, University Hospital Saint-Luc, University of Louvain, Brussels, Belgium; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Dysimmune Neuropathies Unit, Department of Systems Medicine (G.A.M.), Tor Vergata University Hospital, Rome, Italy; Department of Medicine (N.S.), University of Malaya, Kuala Lumpur; Department of Neurology (G.G.), University Hospital of Modena, Italy; Department of Clinical Neurophysiology, Reference Centre for NMD (Y.P.), CHU Nantes, France; Department of Neurology (J.B.), Saarland University Medical School, Homburg-Saarland (previous affiliation); MVZ Pfalzklinikum (J.B.), Kusel, Germany (current affiliation); Department of Neurology (K.K., R.P.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (C.M.), Hospital Británico, Buenos Aires, Argentina; Department of Neurology (M.J.S.T.), Hospital Marques de Valdecilla, Santander; Department of Neurology (L.Q., I.I.), Hospital de la Santa Creu i Santa Pau, U.A.B. CIBERER and ERN-NMD, Barcelona, Spain; Department of Neurology (Y.W.), Affiliated Hospital of Jining Medical University, Shandong Province, China; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Clinical and Research Institute, Milan University, Rozzano, Italy; Nuffield Department of Clinical Neurosciences (S.R.), University of Oxford and Oxford University Hospitals NHS Foundation Trust, UK; Department of Neurosciences, Ophthalmology, Rehabilitation, Genetics and Maternal Sciences (A.S.), University of Genova; IRCCS San Martino Hospital (A.S.), Genova, Italy; Department of Neurology (J.P.), Hospital Clínico de Santiago, Santiago de Compostela (A Coruña), Spain; Department of Neurology (F.H.V.), Franciscus Vlietland Hospital (location: Franciscus Gasthuis), Rotterdam, the Netherlands; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (V.G.), Montefiore Medical Centre, Bronx, NY; Department of Neurology (G. Cavaletti), University Milano-Bicocca, Monza, Italy; Department of Neurology (G.G.-G.), Hospital Universitario Infanta Sofía, San Sebastián de los Reyes, Spain; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, Buenos Aires, Argentina; Department of Neurology (L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (H.D.K.), University Health Network, University of Toronto, Canada; Department of Neurology (E.D.), University Hospital of Larissa, Greece; Department of Neurology, Reference Centre for NMD (S.A.), CHU Timone, Marseille, France; Department of Neurology (A.J.v.d.K., F.E.), Amsterdam University Medical Centre, University of Amsterdam, Neuroscience Institute, Netherlands Neuromuscular Centre, Euro-NMD; Department of Neurology (P.W.W.), Haga Hospital, Den Haag; Department of Neurology (H.J.G.), Reinier de Graaf Hospital, Delft, the Netherlands; Department of Neurology (R.D.M.H.), King's College Hospital, London; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, UK; Department of Neurology (K.A.S.), University of Texas Health Science Centre at Houston; Department of Neurology (S. Karafiath), University of Utah School of Medicine, Salt Lake City; Department of Neurology (M.V.), Lahey Hospital and Medical Center, Tufts University School of Medicine, Burlington, MA; Department of Neurology (G.A.), Mental Health and Sensory Organs (NESMOS), University of Rome 'Sapienza,' Sant'Andrea Hospital, Rome, Italy; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Canada; Department of Neurology (C.G.F.), Maastricht University Medical Centre, the Netherlands; Department of Neurology (M.B.), Leeds Teaching Hospitals; Department of Neurology (R.C.R.), Addenbrooke's Hospital, Cambridge, UK; Department of Neurology (N.J.S.), University at Buffalo Jacobs School of Medicine and Biomedical Sciences, NY; Department of Neurology (R.F.), Scientific Institute San Raffaele, Milan, Italy; Department of Neurology (G.W.v.D.), Canisius Wilhelmina Hospital, Nijmegen; Department of Neurology (M.P.J.G.), Jeroen Bosch Hospital, 's-Hertogenbosch; Department of Neurology (C.S.M.S.), Leiden University Medical Centre, the Netherlands; and Department of Neurology (K.C.G.), St. Elizabeth's Medical Centre, Tufts University, School of Medicine, Boston, MA.; Barroso FA; From the Departments of Neurology (A.Y.D., C.W., B.v.d.B., C.V., J.R., S.E.L., K.K., B.C.J.), Public Health (H.F.L.), and Immunology (B.C.J.), Erasmus MC, University Medical Centre Rotterdam; Department of Neurology (C.W., J.P.A.S.), Maasstad Hospital, Rotterdam, the Netherlands; Laboratory of Gut-Brain Signaling (B.I., N.P., Z.I.), Laboratory Sciences and Services Division, Dhaka, Bangladesh; Department of Neurology (A.D., G. Chavada, H.J.W.), College of Medical, Veterinary and Life Sciences, University of Glasgow, UK; Department of Neurology (Y.Y., S. Kusunoki), Kindai University Faculty of Medicine, Osaka-Sayama City, Osaka, Japan; Department of Neurology (M.M.D.), University of Kansas Medical Center, Kansas City; Department of Neurology (W.W., N.K.), University of Vermont Medical Centre, Burlington; National Institute of Neurosciences and Hospital (Q.D.M.), Agargoan, Bangladesh; Department of Neurology (T.H.), Aarhus University Hospital; Department of Neurology (S.H.S.), Odense University Hospital and University of Southern Denmark, Odense, Denmark; Department of Neurology, Neuromuscular Unit (C.C.), Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Department of Neurology (K.B.), Groote Schuur Hospital, University of Cape Town, South Africa; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle, UK; Department of Neurology (B.v.d.B., C.J.G.), Franciscus Vlietland Hospital, Schiedam, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (S. Kuwabara), Chiba University, Japan; Department of Neurology (P.V.d.B.), Neuromuscular Reference Centre, University Hospital Saint-Luc, University of Louvain, Brussels, Belgium; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Dysimmune Neuropathies Unit, Department of Systems Medicine (G.A.M.), Tor Vergata University Hospital, Rome, Italy; Department of Medicine (N.S.), University of Malaya, Kuala Lumpur; Department of Neurology (G.G.), University Hospital of Modena, Italy; Department of Clinical Neurophysiology, Reference Centre for NMD (Y.P.), CHU Nantes, France; Department of Neurology (J.B.), Saarland University Medical School, Homburg-Saarland (previous affiliation); MVZ Pfalzklinikum (J.B.), Kusel, Germany (current affiliation); Department of Neurology (K.K., R.P.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (C.M.), Hospital Británico, Buenos Aires, Argentina; Department of Neurology (M.J.S.T.), Hospital Marques de Valdecilla, Santander; Department of Neurology (L.Q., I.I.), Hospital de la Santa Creu i Santa Pau, U.A.B. CIBERER and ERN-NMD, Barcelona, Spain; Department of Neurology (Y.W.), Affiliated Hospital of Jining Medical University, Shandong Province, China; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Clinical and Research Institute, Milan University, Rozzano, Italy; Nuffield Department of Clinical Neurosciences (S.R.), University of Oxford and Oxford University Hospitals NHS Foundation Trust, UK; Department of Neurosciences, Ophthalmology, Rehabilitation, Genetics and Maternal Sciences (A.S.), University of Genova; IRCCS San Martino Hospital (A.S.), Genova, Italy; Department of Neurology (J.P.), Hospital Clínico de Santiago, Santiago de Compostela (A Coruña), Spain; Department of Neurology (F.H.V.), Franciscus Vlietland Hospital (location: Franciscus Gasthuis), Rotterdam, the Netherlands; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (V.G.), Montefiore Medical Centre, Bronx, NY; Department of Neurology (G. Cavaletti), University Milano-Bicocca, Monza, Italy; Department of Neurology (G.G.-G.), Hospital Universitario Infanta Sofía, San Sebastián de los Reyes, Spain; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, Buenos Aires, Argentina; Department of Neurology (L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (H.D.K.), University Health Network, University of Toronto, Canada; Department of Neurology (E.D.), University Hospital of Larissa, Greece; Department of Neurology, Reference Centre for NMD (S.A.), CHU Timone, Marseille, France; Department of Neurology (A.J.v.d.K., F.E.), Amsterdam University Medical Centre, University of Amsterdam, Neuroscience Institute, Netherlands Neuromuscular Centre, Euro-NMD; Department of Neurology (P.W.W.), Haga Hospital, Den Haag; Department of Neurology (H.J.G.), Reinier de Graaf Hospital, Delft, the Netherlands; Department of Neurology (R.D.M.H.), King's College Hospital, London; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, UK; Department of Neurology (K.A.S.), University of Texas Health Science Centre at Houston; Department of Neurology (S. Karafiath), University of Utah School of Medicine, Salt Lake City; Department of Neurology (M.V.), Lahey Hospital and Medical Center, Tufts University School of Medicine, Burlington, MA; Department of Neurology (G.A.), Mental Health and Sensory Organs (NESMOS), University of Rome 'Sapienza,' Sant'Andrea Hospital, Rome, Italy; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Canada; Department of Neurology (C.G.F.), Maastricht University Medical Centre, the Netherlands; Department of Neurology (M.B.), Leeds Teaching Hospitals; Department of Neurology (R.C.R.), Addenbrooke's Hospital, Cambridge, UK; Department of Neurology (N.J.S.), University at Buffalo Jacobs School of Medicine and Biomedical Sciences, NY; Department of Neurology (R.F.), Scientific Institute San Raffaele, Milan, Italy; Department of Neurology (G.W.v.D.), Canisius Wilhelmina Hospital, Nijmegen; Department of Neurology (M.P.J.G.), Jeroen Bosch Hospital, 's-Hertogenbosch; Department of Neurology (C.S.M.S.), Leiden University Medical Centre, the Netherlands; and Department of Neurology (K.C.G.), St. Elizabeth's Medical Centre, Tufts University, School of Medicine, Boston, MA.; Visser LH; From the Departments of Neurology (A.Y.D., C.W., B.v.d.B., C.V., J.R., S.E.L., K.K., B.C.J.), Public Health (H.F.L.), and Immunology (B.C.J.), Erasmus MC, University Medical Centre Rotterdam; Department of Neurology (C.W., J.P.A.S.), Maasstad Hospital, Rotterdam, the Netherlands; Laboratory of Gut-Brain Signaling (B.I., N.P., Z.I.), Laboratory Sciences and Services Division, Dhaka, Bangladesh; Department of Neurology (A.D., G. Chavada, H.J.W.), College of Medical, Veterinary and Life Sciences, University of Glasgow, UK; Department of Neurology (Y.Y., S. Kusunoki), Kindai University Faculty of Medicine, Osaka-Sayama City, Osaka, Japan; Department of Neurology (M.M.D.), University of Kansas Medical Center, Kansas City; Department of Neurology (W.W., N.K.), University of Vermont Medical Centre, Burlington; National Institute of Neurosciences and Hospital (Q.D.M.), Agargoan, Bangladesh; Department of Neurology (T.H.), Aarhus University Hospital; Department of Neurology (S.H.S.), Odense University Hospital and University of Southern Denmark, Odense, Denmark; Department of Neurology, Neuromuscular Unit (C.C.), Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Department of Neurology (K.B.), Groote Schuur Hospital, University of Cape Town, South Africa; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle, UK; Department of Neurology (B.v.d.B., C.J.G.), Franciscus Vlietland Hospital, Schiedam, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (S. Kuwabara), Chiba University, Japan; Department of Neurology (P.V.d.B.), Neuromuscular Reference Centre, University Hospital Saint-Luc, University of Louvain, Brussels, Belgium; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Dysimmune Neuropathies Unit, Department of Systems Medicine (G.A.M.), Tor Vergata University Hospital, Rome, Italy; Department of Medicine (N.S.), University of Malaya, Kuala Lumpur; Department of Neurology (G.G.), University Hospital of Modena, Italy; Department of Clinical Neurophysiology, Reference Centre for NMD (Y.P.), CHU Nantes, France; Department of Neurology (J.B.), Saarland University Medical School, Homburg-Saarland (previous affiliation); MVZ Pfalzklinikum (J.B.), Kusel, Germany (current affiliation); Department of Neurology (K.K., R.P.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (C.M.), Hospital Británico, Buenos Aires, Argentina; Department of Neurology (M.J.S.T.), Hospital Marques de Valdecilla, Santander; Department of Neurology (L.Q., I.I.), Hospital de la Santa Creu i Santa Pau, U.A.B. CIBERER and ERN-NMD, Barcelona, Spain; Department of Neurology (Y.W.), Affiliated Hospital of Jining Medical University, Shandong Province, China; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Clinical and Research Institute, Milan University, Rozzano, Italy; Nuffield Department of Clinical Neurosciences (S.R.), University of Oxford and Oxford University Hospitals NHS Foundation Trust, UK; Department of Neurosciences, Ophthalmology, Rehabilitation, Genetics and Maternal Sciences (A.S.), University of Genova; IRCCS San Martino Hospital (A.S.), Genova, Italy; Department of Neurology (J.P.), Hospital Clínico de Santiago, Santiago de Compostela (A Coruña), Spain; Department of Neurology (F.H.V.), Franciscus Vlietland Hospital (location: Franciscus Gasthuis), Rotterdam, the Netherlands; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (V.G.), Montefiore Medical Centre, Bronx, NY; Department of Neurology (G. Cavaletti), University Milano-Bicocca, Monza, Italy; Department of Neurology (G.G.-G.), Hospital Universitario Infanta Sofía, San Sebastián de los Reyes, Spain; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, Buenos Aires, Argentina; Department of Neurology (L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (H.D.K.), University Health Network, University of Toronto, Canada; Department of Neurology (E.D.), University Hospital of Larissa, Greece; Department of Neurology, Reference Centre for NMD (S.A.), CHU Timone, Marseille, France; Department of Neurology (A.J.v.d.K., F.E.), Amsterdam University Medical Centre, University of Amsterdam, Neuroscience Institute, Netherlands Neuromuscular Centre, Euro-NMD; Department of Neurology (P.W.W.), Haga Hospital, Den Haag; Department of Neurology (H.J.G.), Reinier de Graaf Hospital, Delft, the Netherlands; Department of Neurology (R.D.M.H.), King's College Hospital, London; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, UK; Department of Neurology (K.A.S.), University of Texas Health Science Centre at Houston; Department of Neurology (S. Karafiath), University of Utah School of Medicine, Salt Lake City; Department of Neurology (M.V.), Lahey Hospital and Medical Center, Tufts University School of Medicine, Burlington, MA; Department of Neurology (G.A.), Mental Health and Sensory Organs (NESMOS), University of Rome 'Sapienza,' Sant'Andrea Hospital, Rome, Italy; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Canada; Department of Neurology (C.G.F.), Maastricht University Medical Centre, the Netherlands; Department of Neurology (M.B.), Leeds Teaching Hospitals; Department of Neurology (R.C.R.), Addenbrooke's Hospital, Cambridge, UK; Department of Neurology (N.J.S.), University at Buffalo Jacobs School of Medicine and Biomedical Sciences, NY; Department of Neurology (R.F.), Scientific Institute San Raffaele, Milan, Italy; Department of Neurology (G.W.v.D.), Canisius Wilhelmina Hospital, Nijmegen; Department of Neurology (M.P.J.G.), Jeroen Bosch Hospital, 's-Hertogenbosch; Department of Neurology (C.S.M.S.), Leiden University Medical Centre, the Netherlands; and Department of Neurology (K.C.G.), St. Elizabeth's Medical Centre, Tufts University, School of Medicine, Boston, MA.; Katzberg HD; From the Departments of Neurology (A.Y.D., C.W., B.v.d.B., C.V., J.R., S.E.L., K.K., B.C.J.), Public Health (H.F.L.), and Immunology (B.C.J.), Erasmus MC, University Medical Centre Rotterdam; Department of Neurology (C.W., J.P.A.S.), Maasstad Hospital, Rotterdam, the Netherlands; Laboratory of Gut-Brain Signaling (B.I., N.P., Z.I.), Laboratory Sciences and Services Division, Dhaka, Bangladesh; Department of Neurology (A.D., G. Chavada, H.J.W.), College of Medical, Veterinary and Life Sciences, University of Glasgow, UK; Department of Neurology (Y.Y., S. Kusunoki), Kindai University Faculty of Medicine, Osaka-Sayama City, Osaka, Japan; Department of Neurology (M.M.D.), University of Kansas Medical Center, Kansas City; Department of Neurology (W.W., N.K.), University of Vermont Medical Centre, Burlington; National Institute of Neurosciences and Hospital (Q.D.M.), Agargoan, Bangladesh; Department of Neurology (T.H.), Aarhus University Hospital; Department of Neurology (S.H.S.), Odense University Hospital and University of Southern Denmark, Odense, Denmark; Department of Neurology, Neuromuscular Unit (C.C.), Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Department of Neurology (K.B.), Groote Schuur Hospital, University of Cape Town, South Africa; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle, UK; Department of Neurology (B.v.d.B., C.J.G.), Franciscus Vlietland Hospital, Schiedam, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (S. Kuwabara), Chiba University, Japan; Department of Neurology (P.V.d.B.), Neuromuscular Reference Centre, University Hospital Saint-Luc, University of Louvain, Brussels, Belgium; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Dysimmune Neuropathies Unit, Department of Systems Medicine (G.A.M.), Tor Vergata University Hospital, Rome, Italy; Department of Medicine (N.S.), University of Malaya, Kuala Lumpur; Department of Neurology (G.G.), University Hospital of Modena, Italy; Department of Clinical Neurophysiology, Reference Centre for NMD (Y.P.), CHU Nantes, France; Department of Neurology (J.B.), Saarland University Medical School, Homburg-Saarland (previous affiliation); MVZ Pfalzklinikum (J.B.), Kusel, Germany (current affiliation); Department of Neurology (K.K., R.P.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (C.M.), Hospital Británico, Buenos Aires, Argentina; Department of Neurology (M.J.S.T.), Hospital Marques de Valdecilla, Santander; Department of Neurology (L.Q., I.I.), Hospital de la Santa Creu i Santa Pau, U.A.B. CIBERER and ERN-NMD, Barcelona, Spain; Department of Neurology (Y.W.), Affiliated Hospital of Jining Medical University, Shandong Province, China; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Clinical and Research Institute, Milan University, Rozzano, Italy; Nuffield Department of Clinical Neurosciences (S.R.), University of Oxford and Oxford University Hospitals NHS Foundation Trust, UK; Department of Neurosciences, Ophthalmology, Rehabilitation, Genetics and Maternal Sciences (A.S.), University of Genova; IRCCS San Martino Hospital (A.S.), Genova, Italy; Department of Neurology (J.P.), Hospital Clínico de Santiago, Santiago de Compostela (A Coruña), Spain; Department of Neurology (F.H.V.), Franciscus Vlietland Hospital (location: Franciscus Gasthuis), Rotterdam, the Netherlands; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (V.G.), Montefiore Medical Centre, Bronx, NY; Department of Neurology (G. Cavaletti), University Milano-Bicocca, Monza, Italy; Department of Neurology (G.G.-G.), Hospital Universitario Infanta Sofía, San Sebastián de los Reyes, Spain; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, Buenos Aires, Argentina; Department of Neurology (L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (H.D.K.), University Health Network, University of Toronto, Canada; Department of Neurology (E.D.), University Hospital of Larissa, Greece; Department of Neurology, Reference Centre for NMD (S.A.), CHU Timone, Marseille, France; Department of Neurology (A.J.v.d.K., F.E.), Amsterdam University Medical Centre, University of Amsterdam, Neuroscience Institute, Netherlands Neuromuscular Centre, Euro-NMD; Department of Neurology (P.W.W.), Haga Hospital, Den Haag; Department of Neurology (H.J.G.), Reinier de Graaf Hospital, Delft, the Netherlands; Department of Neurology (R.D.M.H.), King's College Hospital, London; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, UK; Department of Neurology (K.A.S.), University of Texas Health Science Centre at Houston; Department of Neurology (S. Karafiath), University of Utah School of Medicine, Salt Lake City; Department of Neurology (M.V.), Lahey Hospital and Medical Center, Tufts University School of Medicine, Burlington, MA; Department of Neurology (G.A.), Mental Health and Sensory Organs (NESMOS), University of Rome 'Sapienza,' Sant'Andrea Hospital, Rome, Italy; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Canada; Department of Neurology (C.G.F.), Maastricht University Medical Centre, the Netherlands; Department of Neurology (M.B.), Leeds Teaching Hospitals; Department of Neurology (R.C.R.), Addenbrooke's Hospital, Cambridge, UK; Department of Neurology (N.J.S.), University at Buffalo Jacobs School of Medicine and Biomedical Sciences, NY; Department of Neurology (R.F.), Scientific Institute San Raffaele, Milan, Italy; Department of Neurology (G.W.v.D.), Canisius Wilhelmina Hospital, Nijmegen; Department of Neurology (M.P.J.G.), Jeroen Bosch Hospital, 's-Hertogenbosch; Department of Neurology (C.S.M.S.), Leiden University Medical Centre, the Netherlands; and Department of Neurology (K.C.G.), St. Elizabeth's Medical Centre, Tufts University, School of Medicine, Boston, MA.; Dardiotis E; From the Departments of Neurology (A.Y.D., C.W., B.v.d.B., C.V., J.R., S.E.L., K.K., B.C.J.), Public Health (H.F.L.), and Immunology (B.C.J.), Erasmus MC, University Medical Centre Rotterdam; Department of Neurology (C.W., J.P.A.S.), Maasstad Hospital, Rotterdam, the Netherlands; Laboratory of Gut-Brain Signaling (B.I., N.P., Z.I.), Laboratory Sciences and Services Division, Dhaka, Bangladesh; Department of Neurology (A.D., G. Chavada, H.J.W.), College of Medical, Veterinary and Life Sciences, University of Glasgow, UK; Department of Neurology (Y.Y., S. Kusunoki), Kindai University Faculty of Medicine, Osaka-Sayama City, Osaka, Japan; Department of Neurology (M.M.D.), University of Kansas Medical Center, Kansas City; Department of Neurology (W.W., N.K.), University of Vermont Medical Centre, Burlington; National Institute of Neurosciences and Hospital (Q.D.M.), Agargoan, Bangladesh; Department of Neurology (T.H.), Aarhus University Hospital; Department of Neurology (S.H.S.), Odense University Hospital and University of Southern Denmark, Odense, Denmark; Department of Neurology, Neuromuscular Unit (C.C.), Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Department of Neurology (K.B.), Groote Schuur Hospital, University of Cape Town, South Africa; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle, UK; Department of Neurology (B.v.d.B., C.J.G.), Franciscus Vlietland Hospital, Schiedam, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (S. Kuwabara), Chiba University, Japan; Department of Neurology (P.V.d.B.), Neuromuscular Reference Centre, University Hospital Saint-Luc, University of Louvain, Brussels, Belgium; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Dysimmune Neuropathies Unit, Department of Systems Medicine (G.A.M.), Tor Vergata University Hospital, Rome, Italy; Department of Medicine (N.S.), University of Malaya, Kuala Lumpur; Department of Neurology (G.G.), University Hospital of Modena, Italy; Department of Clinical Neurophysiology, Reference Centre for NMD (Y.P.), CHU Nantes, France; Department of Neurology (J.B.), Saarland University Medical School, Homburg-Saarland (previous affiliation); MVZ Pfalzklinikum (J.B.), Kusel, Germany (current affiliation); Department of Neurology (K.K., R.P.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (C.M.), Hospital Británico, Buenos Aires, Argentina; Department of Neurology (M.J.S.T.), Hospital Marques de Valdecilla, Santander; Department of Neurology (L.Q., I.I.), Hospital de la Santa Creu i Santa Pau, U.A.B. CIBERER and ERN-NMD, Barcelona, Spain; Department of Neurology (Y.W.), Affiliated Hospital of Jining Medical University, Shandong Province, China; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Clinical and Research Institute, Milan University, Rozzano, Italy; Nuffield Department of Clinical Neurosciences (S.R.), University of Oxford and Oxford University Hospitals NHS Foundation Trust, UK; Department of Neurosciences, Ophthalmology, Rehabilitation, Genetics and Maternal Sciences (A.S.), University of Genova; IRCCS San Martino Hospital (A.S.), Genova, Italy; Department of Neurology (J.P.), Hospital Clínico de Santiago, Santiago de Compostela (A Coruña), Spain; Department of Neurology (F.H.V.), Franciscus Vlietland Hospital (location: Franciscus Gasthuis), Rotterdam, the Netherlands; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (V.G.), Montefiore Medical Centre, Bronx, NY; Department of Neurology (G. Cavaletti), University Milano-Bicocca, Monza, Italy; Department of Neurology (G.G.-G.), Hospital Universitario Infanta Sofía, San Sebastián de los Reyes, Spain; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, Buenos Aires, Argentina; Department of Neurology (L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (H.D.K.), University Health Network, University of Toronto, Canada; Department of Neurology (E.D.), University Hospital of Larissa, Greece; Department of Neurology, Reference Centre for NMD (S.A.), CHU Timone, Marseille, France; Department of Neurology (A.J.v.d.K., F.E.), Amsterdam University Medical Centre, University of Amsterdam, Neuroscience Institute, Netherlands Neuromuscular Centre, Euro-NMD; Department of Neurology (P.W.W.), Haga Hospital, Den Haag; Department of Neurology (H.J.G.), Reinier de Graaf Hospital, Delft, the Netherlands; Department of Neurology (R.D.M.H.), King's College Hospital, London; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, UK; Department of Neurology (K.A.S.), University of Texas Health Science Centre at Houston; Department of Neurology (S. Karafiath), University of Utah School of Medicine, Salt Lake City; Department of Neurology (M.V.), Lahey Hospital and Medical Center, Tufts University School of Medicine, Burlington, MA; Department of Neurology (G.A.), Mental Health and Sensory Organs (NESMOS), University of Rome 'Sapienza,' Sant'Andrea Hospital, Rome, Italy; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Canada; Department of Neurology (C.G.F.), Maastricht University Medical Centre, the Netherlands; Department of Neurology (M.B.), Leeds Teaching Hospitals; Department of Neurology (R.C.R.), Addenbrooke's Hospital, Cambridge, UK; Department of Neurology (N.J.S.), University at Buffalo Jacobs School of Medicine and Biomedical Sciences, NY; Department of Neurology (R.F.), Scientific Institute San Raffaele, Milan, Italy; Department of Neurology (G.W.v.D.), Canisius Wilhelmina Hospital, Nijmegen; Department of Neurology (M.P.J.G.), Jeroen Bosch Hospital, 's-Hertogenbosch; Department of Neurology (C.S.M.S.), Leiden University Medical Centre, the Netherlands; and Department of Neurology (K.C.G.), St. Elizabeth's Medical Centre, Tufts University, School of Medicine, Boston, MA.; Attarian S; From the Departments of Neurology (A.Y.D., C.W., B.v.d.B., C.V., J.R., S.E.L., K.K., B.C.J.), Public Health (H.F.L.), and Immunology (B.C.J.), Erasmus MC, University Medical Centre Rotterdam; Department of Neurology (C.W., J.P.A.S.), Maasstad Hospital, Rotterdam, the Netherlands; Laboratory of Gut-Brain Signaling (B.I., N.P., Z.I.), Laboratory Sciences and Services Division, Dhaka, Bangladesh; Department of Neurology (A.D., G. Chavada, H.J.W.), College of Medical, Veterinary and Life Sciences, University of Glasgow, UK; Department of Neurology (Y.Y., S. Kusunoki), Kindai University Faculty of Medicine, Osaka-Sayama City, Osaka, Japan; Department of Neurology (M.M.D.), University of Kansas Medical Center, Kansas City; Department of Neurology (W.W., N.K.), University of Vermont Medical Centre, Burlington; National Institute of Neurosciences and Hospital (Q.D.M.), Agargoan, Bangladesh; Department of Neurology (T.H.), Aarhus University Hospital; Department of Neurology (S.H.S.), Odense University Hospital and University of Southern Denmark, Odense, Denmark; Department of Neurology, Neuromuscular Unit (C.C.), Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Department of Neurology (K.B.), Groote Schuur Hospital, University of Cape Town, South Africa; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle, UK; Department of Neurology (B.v.d.B., C.J.G.), Franciscus Vlietland Hospital, Schiedam, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (S. Kuwabara), Chiba University, Japan; Department of Neurology (P.V.d.B.), Neuromuscular Reference Centre, University Hospital Saint-Luc, University of Louvain, Brussels, Belgium; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Dysimmune Neuropathies Unit, Department of Systems Medicine (G.A.M.), Tor Vergata University Hospital, Rome, Italy; Department of Medicine (N.S.), University of Malaya, Kuala Lumpur; Department of Neurology (G.G.), University Hospital of Modena, Italy; Department of Clinical Neurophysiology, Reference Centre for NMD (Y.P.), CHU Nantes, France; Department of Neurology (J.B.), Saarland University Medical School, Homburg-Saarland (previous affiliation); MVZ Pfalzklinikum (J.B.), Kusel, Germany (current affiliation); Department of Neurology (K.K., R.P.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (C.M.), Hospital Británico, Buenos Aires, Argentina; Department of Neurology (M.J.S.T.), Hospital Marques de Valdecilla, Santander; Department of Neurology (L.Q., I.I.), Hospital de la Santa Creu i Santa Pau, U.A.B. CIBERER and ERN-NMD, Barcelona, Spain; Department of Neurology (Y.W.), Affiliated Hospital of Jining Medical University, Shandong Province, China; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Clinical and Research Institute, Milan University, Rozzano, Italy; Nuffield Department of Clinical Neurosciences (S.R.), University of Oxford and Oxford University Hospitals NHS Foundation Trust, UK; Department of Neurosciences, Ophthalmology, Rehabilitation, Genetics and Maternal Sciences (A.S.), University of Genova; IRCCS San Martino Hospital (A.S.), Genova, Italy; Department of Neurology (J.P.), Hospital Clínico de Santiago, Santiago de Compostela (A Coruña), Spain; Department of Neurology (F.H.V.), Franciscus Vlietland Hospital (location: Franciscus Gasthuis), Rotterdam, the Netherlands; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (V.G.), Montefiore Medical Centre, Bronx, NY; Department of Neurology (G. Cavaletti), University Milano-Bicocca, Monza, Italy; Department of Neurology (G.G.-G.), Hospital Universitario Infanta Sofía, San Sebastián de los Reyes, Spain; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, Buenos Aires, Argentina; Department of Neurology (L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (H.D.K.), University Health Network, University of Toronto, Canada; Department of Neurology (E.D.), University Hospital of Larissa, Greece; Department of Neurology, Reference Centre for NMD (S.A.), CHU Timone, Marseille, France; Department of Neurology (A.J.v.d.K., F.E.), Amsterdam University Medical Centre, University of Amsterdam, Neuroscience Institute, Netherlands Neuromuscular Centre, Euro-NMD; Department of Neurology (P.W.W.), Haga Hospital, Den Haag; Department of Neurology (H.J.G.), Reinier de Graaf Hospital, Delft, the Netherlands; Department of Neurology (R.D.M.H.), King's College Hospital, London; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, UK; Department of Neurology (K.A.S.), University of Texas Health Science Centre at Houston; Department of Neurology (S. Karafiath), University of Utah School of Medicine, Salt Lake City; Department of Neurology (M.V.), Lahey Hospital and Medical Center, Tufts University School of Medicine, Burlington, MA; Department of Neurology (G.A.), Mental Health and Sensory Organs (NESMOS), University of Rome 'Sapienza,' Sant'Andrea Hospital, Rome, Italy; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Canada; Department of Neurology (C.G.F.), Maastricht University Medical Centre, the Netherlands; Department of Neurology (M.B.), Leeds Teaching Hospitals; Department of Neurology (R.C.R.), Addenbrooke's Hospital, Cambridge, UK; Department of Neurology (N.J.S.), University at Buffalo Jacobs School of Medicine and Biomedical Sciences, NY; Department of Neurology (R.F.), Scientific Institute San Raffaele, Milan, Italy; Department of Neurology (G.W.v.D.), Canisius Wilhelmina Hospital, Nijmegen; Department of Neurology (M.P.J.G.), Jeroen Bosch Hospital, 's-Hertogenbosch; Department of Neurology (C.S.M.S.), Leiden University Medical Centre, the Netherlands; and Department of Neurology (K.C.G.), St. Elizabeth's Medical Centre, Tufts University, School of Medicine, Boston, MA.; van der Kooi AJ; From the Departments of Neurology (A.Y.D., C.W., B.v.d.B., C.V., J.R., S.E.L., K.K., B.C.J.), Public Health (H.F.L.), and Immunology (B.C.J.), Erasmus MC, University Medical Centre Rotterdam; Department of Neurology (C.W., J.P.A.S.), Maasstad Hospital, Rotterdam, the Netherlands; Laboratory of Gut-Brain Signaling (B.I., N.P., Z.I.), Laboratory Sciences and Services Division, Dhaka, Bangladesh; Department of Neurology (A.D., G. Chavada, H.J.W.), College of Medical, Veterinary and Life Sciences, University of Glasgow, UK; Department of Neurology (Y.Y., S. Kusunoki), Kindai University Faculty of Medicine, Osaka-Sayama City, Osaka, Japan; Department of Neurology (M.M.D.), University of Kansas Medical Center, Kansas City; Department of Neurology (W.W., N.K.), University of Vermont Medical Centre, Burlington; National Institute of Neurosciences and Hospital (Q.D.M.), Agargoan, Bangladesh; Department of Neurology (T.H.), Aarhus University Hospital; Department of Neurology (S.H.S.), Odense University Hospital and University of Southern Denmark, Odense, Denmark; Department of Neurology, Neuromuscular Unit (C.C.), Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Department of Neurology (K.B.), Groote Schuur Hospital, University of Cape Town, South Africa; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle, UK; Department of Neurology (B.v.d.B., C.J.G.), Franciscus Vlietland Hospital, Schiedam, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (S. Kuwabara), Chiba University, Japan; Department of Neurology (P.V.d.B.), Neuromuscular Reference Centre, University Hospital Saint-Luc, University of Louvain, Brussels, Belgium; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Dysimmune Neuropathies Unit, Department of Systems Medicine (G.A.M.), Tor Vergata University Hospital, Rome, Italy; Department of Medicine (N.S.), University of Malaya, Kuala Lumpur; Department of Neurology (G.G.), University Hospital of Modena, Italy; Department of Clinical Neurophysiology, Reference Centre for NMD (Y.P.), CHU Nantes, France; Department of Neurology (J.B.), Saarland University Medical School, Homburg-Saarland (previous affiliation); MVZ Pfalzklinikum (J.B.), Kusel, Germany (current affiliation); Department of Neurology (K.K., R.P.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (C.M.), Hospital Británico, Buenos Aires, Argentina; Department of Neurology (M.J.S.T.), Hospital Marques de Valdecilla, Santander; Department of Neurology (L.Q., I.I.), Hospital de la Santa Creu i Santa Pau, U.A.B. CIBERER and ERN-NMD, Barcelona, Spain; Department of Neurology (Y.W.), Affiliated Hospital of Jining Medical University, Shandong Province, China; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Clinical and Research Institute, Milan University, Rozzano, Italy; Nuffield Department of Clinical Neurosciences (S.R.), University of Oxford and Oxford University Hospitals NHS Foundation Trust, UK; Department of Neurosciences, Ophthalmology, Rehabilitation, Genetics and Maternal Sciences (A.S.), University of Genova; IRCCS San Martino Hospital (A.S.), Genova, Italy; Department of Neurology (J.P.), Hospital Clínico de Santiago, Santiago de Compostela (A Coruña), Spain; Department of Neurology (F.H.V.), Franciscus Vlietland Hospital (location: Franciscus Gasthuis), Rotterdam, the Netherlands; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (V.G.), Montefiore Medical Centre, Bronx, NY; Department of Neurology (G. Cavaletti), University Milano-Bicocca, Monza, Italy; Department of Neurology (G.G.-G.), Hospital Universitario Infanta Sofía, San Sebastián de los Reyes, Spain; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, Buenos Aires, Argentina; Department of Neurology (L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (H.D.K.), University Health Network, University of Toronto, Canada; Department of Neurology (E.D.), University Hospital of Larissa, Greece; Department of Neurology, Reference Centre for NMD (S.A.), CHU Timone, Marseille, France; Department of Neurology (A.J.v.d.K., F.E.), Amsterdam University Medical Centre, University of Amsterdam, Neuroscience Institute, Netherlands Neuromuscular Centre, Euro-NMD; Department of Neurology (P.W.W.), Haga Hospital, Den Haag; Department of Neurology (H.J.G.), Reinier de Graaf Hospital, Delft, the Netherlands; Department of Neurology (R.D.M.H.), King's College Hospital, London; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, UK; Department of Neurology (K.A.S.), University of Texas Health Science Centre at Houston; Department of Neurology (S. Karafiath), University of Utah School of Medicine, Salt Lake City; Department of Neurology (M.V.), Lahey Hospital and Medical Center, Tufts University School of Medicine, Burlington, MA; Department of Neurology (G.A.), Mental Health and Sensory Organs (NESMOS), University of Rome 'Sapienza,' Sant'Andrea Hospital, Rome, Italy; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Canada; Department of Neurology (C.G.F.), Maastricht University Medical Centre, the Netherlands; Department of Neurology (M.B.), Leeds Teaching Hospitals; Department of Neurology (R.C.R.), Addenbrooke's Hospital, Cambridge, UK; Department of Neurology (N.J.S.), University at Buffalo Jacobs School of Medicine and Biomedical Sciences, NY; Department of Neurology (R.F.), Scientific Institute San Raffaele, Milan, Italy; Department of Neurology (G.W.v.D.), Canisius Wilhelmina Hospital, Nijmegen; Department of Neurology (M.P.J.G.), Jeroen Bosch Hospital, 's-Hertogenbosch; Department of Neurology (C.S.M.S.), Leiden University Medical Centre, the Netherlands; and Department of Neurology (K.C.G.), St. Elizabeth's Medical Centre, Tufts University, School of Medicine, Boston, MA.; Eftimov F; From the Departments of Neurology (A.Y.D., C.W., B.v.d.B., C.V., J.R., S.E.L., K.K., B.C.J.), Public Health (H.F.L.), and Immunology (B.C.J.), Erasmus MC, University Medical Centre Rotterdam; Department of Neurology (C.W., J.P.A.S.), Maasstad Hospital, Rotterdam, the Netherlands; Laboratory of Gut-Brain Signaling (B.I., N.P., Z.I.), Laboratory Sciences and Services Division, Dhaka, Bangladesh; Department of Neurology (A.D., G. Chavada, H.J.W.), College of Medical, Veterinary and Life Sciences, University of Glasgow, UK; Department of Neurology (Y.Y., S. Kusunoki), Kindai University Faculty of Medicine, Osaka-Sayama City, Osaka, Japan; Department of Neurology (M.M.D.), University of Kansas Medical Center, Kansas City; Department of Neurology (W.W., N.K.), University of Vermont Medical Centre, Burlington; National Institute of Neurosciences and Hospital (Q.D.M.), Agargoan, Bangladesh; Department of Neurology (T.H.), Aarhus University Hospital; Department of Neurology (S.H.S.), Odense University Hospital and University of Southern Denmark, Odense, Denmark; Department of Neurology, Neuromuscular Unit (C.C.), Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Department of Neurology (K.B.), Groote Schuur Hospital, University of Cape Town, South Africa; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle, UK; Department of Neurology (B.v.d.B., C.J.G.), Franciscus Vlietland Hospital, Schiedam, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (S. Kuwabara), Chiba University, Japan; Department of Neurology (P.V.d.B.), Neuromuscular Reference Centre, University Hospital Saint-Luc, University of Louvain, Brussels, Belgium; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Dysimmune Neuropathies Unit, Department of Systems Medicine (G.A.M.), Tor Vergata University Hospital, Rome, Italy; Department of Medicine (N.S.), University of Malaya, Kuala Lumpur; Department of Neurology (G.G.), University Hospital of Modena, Italy; Department of Clinical Neurophysiology, Reference Centre for NMD (Y.P.), CHU Nantes, France; Department of Neurology (J.B.), Saarland University Medical School, Homburg-Saarland (previous affiliation); MVZ Pfalzklinikum (J.B.), Kusel, Germany (current affiliation); Department of Neurology (K.K., R.P.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (C.M.), Hospital Británico, Buenos Aires, Argentina; Department of Neurology (M.J.S.T.), Hospital Marques de Valdecilla, Santander; Department of Neurology (L.Q., I.I.), Hospital de la Santa Creu i Santa Pau, U.A.B. CIBERER and ERN-NMD, Barcelona, Spain; Department of Neurology (Y.W.), Affiliated Hospital of Jining Medical University, Shandong Province, China; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Clinical and Research Institute, Milan University, Rozzano, Italy; Nuffield Department of Clinical Neurosciences (S.R.), University of Oxford and Oxford University Hospitals NHS Foundation Trust, UK; Department of Neurosciences, Ophthalmology, Rehabilitation, Genetics and Maternal Sciences (A.S.), University of Genova; IRCCS San Martino Hospital (A.S.), Genova, Italy; Department of Neurology (J.P.), Hospital Clínico de Santiago, Santiago de Compostela (A Coruña), Spain; Department of Neurology (F.H.V.), Franciscus Vlietland Hospital (location: Franciscus Gasthuis), Rotterdam, the Netherlands; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (V.G.), Montefiore Medical Centre, Bronx, NY; Department of Neurology (G. Cavaletti), University Milano-Bicocca, Monza, Italy; Department of Neurology (G.G.-G.), Hospital Universitario Infanta Sofía, San Sebastián de los Reyes, Spain; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, Buenos Aires, Argentina; Department of Neurology (L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (H.D.K.), University Health Network, University of Toronto, Canada; Department of Neurology (E.D.), University Hospital of Larissa, Greece; Department of Neurology, Reference Centre for NMD (S.A.), CHU Timone, Marseille, France; Department of Neurology (A.J.v.d.K., F.E.), Amsterdam University Medical Centre, University of Amsterdam, Neuroscience Institute, Netherlands Neuromuscular Centre, Euro-NMD; Department of Neurology (P.W.W.), Haga Hospital, Den Haag; Department of Neurology (H.J.G.), Reinier de Graaf Hospital, Delft, the Netherlands; Department of Neurology (R.D.M.H.), King's College Hospital, London; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, UK; Department of Neurology (K.A.S.), University of Texas Health Science Centre at Houston; Department of Neurology (S. Karafiath), University of Utah School of Medicine, Salt Lake City; Department of Neurology (M.V.), Lahey Hospital and Medical Center, Tufts University School of Medicine, Burlington, MA; Department of Neurology (G.A.), Mental Health and Sensory Organs (NESMOS), University of Rome 'Sapienza,' Sant'Andrea Hospital, Rome, Italy; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Canada; Department of Neurology (C.G.F.), Maastricht University Medical Centre, the Netherlands; Department of Neurology (M.B.), Leeds Teaching Hospitals; Department of Neurology (R.C.R.), Addenbrooke's Hospital, Cambridge, UK; Department of Neurology (N.J.S.), University at Buffalo Jacobs School of Medicine and Biomedical Sciences, NY; Department of Neurology (R.F.), Scientific Institute San Raffaele, Milan, Italy; Department of Neurology (G.W.v.D.), Canisius Wilhelmina Hospital, Nijmegen; Department of Neurology (M.P.J.G.), Jeroen Bosch Hospital, 's-Hertogenbosch; Department of Neurology (C.S.M.S.), Leiden University Medical Centre, the Netherlands; and Department of Neurology (K.C.G.), St. Elizabeth's Medical Centre, Tufts University, School of Medicine, Boston, MA.; Wirtz PW; From the Departments of Neurology (A.Y.D., C.W., B.v.d.B., C.V., J.R., S.E.L., K.K., B.C.J.), Public Health (H.F.L.), and Immunology (B.C.J.), Erasmus MC, University Medical Centre Rotterdam; Department of Neurology (C.W., J.P.A.S.), Maasstad Hospital, Rotterdam, the Netherlands; Laboratory of Gut-Brain Signaling (B.I., N.P., Z.I.), Laboratory Sciences and Services Division, Dhaka, Bangladesh; Department of Neurology (A.D., G. Chavada, H.J.W.), College of Medical, Veterinary and Life Sciences, University of Glasgow, UK; Department of Neurology (Y.Y., S. Kusunoki), Kindai University Faculty of Medicine, Osaka-Sayama City, Osaka, Japan; Department of Neurology (M.M.D.), University of Kansas Medical Center, Kansas City; Department of Neurology (W.W., N.K.), University of Vermont Medical Centre, Burlington; National Institute of Neurosciences and Hospital (Q.D.M.), Agargoan, Bangladesh; Department of Neurology (T.H.), Aarhus University Hospital; Department of Neurology (S.H.S.), Odense University Hospital and University of Southern Denmark, Odense, Denmark; Department of Neurology, Neuromuscular Unit (C.C.), Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Department of Neurology (K.B.), Groote Schuur Hospital, University of Cape Town, South Africa; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle, UK; Department of Neurology (B.v.d.B., C.J.G.), Franciscus Vlietland Hospital, Schiedam, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (S. Kuwabara), Chiba University, Japan; Department of Neurology (P.V.d.B.), Neuromuscular Reference Centre, University Hospital Saint-Luc, University of Louvain, Brussels, Belgium; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Dysimmune Neuropathies Unit, Department of Systems Medicine (G.A.M.), Tor Vergata University Hospital, Rome, Italy; Department of Medicine (N.S.), University of Malaya, Kuala Lumpur; Department of Neurology (G.G.), University Hospital of Modena, Italy; Department of Clinical Neurophysiology, Reference Centre for NMD (Y.P.), CHU Nantes, France; Department of Neurology (J.B.), Saarland University Medical School, Homburg-Saarland (previous affiliation); MVZ Pfalzklinikum (J.B.), Kusel, Germany (current affiliation); Department of Neurology (K.K., R.P.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (C.M.), Hospital Británico, Buenos Aires, Argentina; Department of Neurology (M.J.S.T.), Hospital Marques de Valdecilla, Santander; Department of Neurology (L.Q., I.I.), Hospital de la Santa Creu i Santa Pau, U.A.B. CIBERER and ERN-NMD, Barcelona, Spain; Department of Neurology (Y.W.), Affiliated Hospital of Jining Medical University, Shandong Province, China; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Clinical and Research Institute, Milan University, Rozzano, Italy; Nuffield Department of Clinical Neurosciences (S.R.), University of Oxford and Oxford University Hospitals NHS Foundation Trust, UK; Department of Neurosciences, Ophthalmology, Rehabilitation, Genetics and Maternal Sciences (A.S.), University of Genova; IRCCS San Martino Hospital (A.S.), Genova, Italy; Department of Neurology (J.P.), Hospital Clínico de Santiago, Santiago de Compostela (A Coruña), Spain; Department of Neurology (F.H.V.), Franciscus Vlietland Hospital (location: Franciscus Gasthuis), Rotterdam, the Netherlands; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (V.G.), Montefiore Medical Centre, Bronx, NY; Department of Neurology (G. Cavaletti), University Milano-Bicocca, Monza, Italy; Department of Neurology (G.G.-G.), Hospital Universitario Infanta Sofía, San Sebastián de los Reyes, Spain; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, Buenos Aires, Argentina; Department of Neurology (L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (H.D.K.), University Health Network, University of Toronto, Canada; Department of Neurology (E.D.), University Hospital of Larissa, Greece; Department of Neurology, Reference Centre for NMD (S.A.), CHU Timone, Marseille, France; Department of Neurology (A.J.v.d.K., F.E.), Amsterdam University Medical Centre, University of Amsterdam, Neuroscience Institute, Netherlands Neuromuscular Centre, Euro-NMD; Department of Neurology (P.W.W.), Haga Hospital, Den Haag; Department of Neurology (H.J.G.), Reinier de Graaf Hospital, Delft, the Netherlands; Department of Neurology (R.D.M.H.), King's College Hospital, London; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, UK; Department of Neurology (K.A.S.), University of Texas Health Science Centre at Houston; Department of Neurology (S. Karafiath), University of Utah School of Medicine, Salt Lake City; Department of Neurology (M.V.), Lahey Hospital and Medical Center, Tufts University School of Medicine, Burlington, MA; Department of Neurology (G.A.), Mental Health and Sensory Organs (NESMOS), University of Rome 'Sapienza,' Sant'Andrea Hospital, Rome, Italy; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Canada; Department of Neurology (C.G.F.), Maastricht University Medical Centre, the Netherlands; Department of Neurology (M.B.), Leeds Teaching Hospitals; Department of Neurology (R.C.R.), Addenbrooke's Hospital, Cambridge, UK; Department of Neurology (N.J.S.), University at Buffalo Jacobs School of Medicine and Biomedical Sciences, NY; Department of Neurology (R.F.), Scientific Institute San Raffaele, Milan, Italy; Department of Neurology (G.W.v.D.), Canisius Wilhelmina Hospital, Nijmegen; Department of Neurology (M.P.J.G.), Jeroen Bosch Hospital, 's-Hertogenbosch; Department of Neurology (C.S.M.S.), Leiden University Medical Centre, the Netherlands; and Department of Neurology (K.C.G.), St. Elizabeth's Medical Centre, Tufts University, School of Medicine, Boston, MA.; Samijn JPA; From the Departments of Neurology (A.Y.D., C.W., B.v.d.B., C.V., J.R., S.E.L., K.K., B.C.J.), Public Health (H.F.L.), and Immunology (B.C.J.), Erasmus MC, University Medical Centre Rotterdam; Department of Neurology (C.W., J.P.A.S.), Maasstad Hospital, Rotterdam, the Netherlands; Laboratory of Gut-Brain Signaling (B.I., N.P., Z.I.), Laboratory Sciences and Services Division, Dhaka, Bangladesh; Department of Neurology (A.D., G. Chavada, H.J.W.), College of Medical, Veterinary and Life Sciences, University of Glasgow, UK; Department of Neurology (Y.Y., S. Kusunoki), Kindai University Faculty of Medicine, Osaka-Sayama City, Osaka, Japan; Department of Neurology (M.M.D.), University of Kansas Medical Center, Kansas City; Department of Neurology (W.W., N.K.), University of Vermont Medical Centre, Burlington; National Institute of Neurosciences and Hospital (Q.D.M.), Agargoan, Bangladesh; Department of Neurology (T.H.), Aarhus University Hospital; Department of Neurology (S.H.S.), Odense University Hospital and University of Southern Denmark, Odense, Denmark; Department of Neurology, Neuromuscular Unit (C.C.), Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Department of Neurology (K.B.), Groote Schuur Hospital, University of Cape Town, South Africa; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle, UK; Department of Neurology (B.v.d.B., C.J.G.), Franciscus Vlietland Hospital, Schiedam, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (S. Kuwabara), Chiba University, Japan; Department of Neurology (P.V.d.B.), Neuromuscular Reference Centre, University Hospital Saint-Luc, University of Louvain, Brussels, Belgium; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Dysimmune Neuropathies Unit, Department of Systems Medicine (G.A.M.), Tor Vergata University Hospital, Rome, Italy; Department of Medicine (N.S.), University of Malaya, Kuala Lumpur; Department of Neurology (G.G.), University Hospital of Modena, Italy; Department of Clinical Neurophysiology, Reference Centre for NMD (Y.P.), CHU Nantes, France; Department of Neurology (J.B.), Saarland University Medical School, Homburg-Saarland (previous affiliation); MVZ Pfalzklinikum (J.B.), Kusel, Germany (current affiliation); Department of Neurology (K.K., R.P.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (C.M.), Hospital Británico, Buenos Aires, Argentina; Department of Neurology (M.J.S.T.), Hospital Marques de Valdecilla, Santander; Department of Neurology (L.Q., I.I.), Hospital de la Santa Creu i Santa Pau, U.A.B. CIBERER and ERN-NMD, Barcelona, Spain; Department of Neurology (Y.W.), Affiliated Hospital of Jining Medical University, Shandong Province, China; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Clinical and Research Institute, Milan University, Rozzano, Italy; Nuffield Department of Clinical Neurosciences (S.R.), University of Oxford and Oxford University Hospitals NHS Foundation Trust, UK; Department of Neurosciences, Ophthalmology, Rehabilitation, Genetics and Maternal Sciences (A.S.), University of Genova; IRCCS San Martino Hospital (A.S.), Genova, Italy; Department of Neurology (J.P.), Hospital Clínico de Santiago, Santiago de Compostela (A Coruña), Spain; Department of Neurology (F.H.V.), Franciscus Vlietland Hospital (location: Franciscus Gasthuis), Rotterdam, the Netherlands; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (V.G.), Montefiore Medical Centre, Bronx, NY; Department of Neurology (G. Cavaletti), University Milano-Bicocca, Monza, Italy; Department of Neurology (G.G.-G.), Hospital Universitario Infanta Sofía, San Sebastián de los Reyes, Spain; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, Buenos Aires, Argentina; Department of Neurology (L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (H.D.K.), University Health Network, University of Toronto, Canada; Department of Neurology (E.D.), University Hospital of Larissa, Greece; Department of Neurology, Reference Centre for NMD (S.A.), CHU Timone, Marseille, France; Department of Neurology (A.J.v.d.K., F.E.), Amsterdam University Medical Centre, University of Amsterdam, Neuroscience Institute, Netherlands Neuromuscular Centre, Euro-NMD; Department of Neurology (P.W.W.), Haga Hospital, Den Haag; Department of Neurology (H.J.G.), Reinier de Graaf Hospital, Delft, the Netherlands; Department of Neurology (R.D.M.H.), King's College Hospital, London; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, UK; Department of Neurology (K.A.S.), University of Texas Health Science Centre at Houston; Department of Neurology (S. Karafiath), University of Utah School of Medicine, Salt Lake City; Department of Neurology (M.V.), Lahey Hospital and Medical Center, Tufts University School of Medicine, Burlington, MA; Department of Neurology (G.A.), Mental Health and Sensory Organs (NESMOS), University of Rome 'Sapienza,' Sant'Andrea Hospital, Rome, Italy; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Canada; Department of Neurology (C.G.F.), Maastricht University Medical Centre, the Netherlands; Department of Neurology (M.B.), Leeds Teaching Hospitals; Department of Neurology (R.C.R.), Addenbrooke's Hospital, Cambridge, UK; Department of Neurology (N.J.S.), University at Buffalo Jacobs School of Medicine and Biomedical Sciences, NY; Department of Neurology (R.F.), Scientific Institute San Raffaele, Milan, Italy; Department of Neurology (G.W.v.D.), Canisius Wilhelmina Hospital, Nijmegen; Department of Neurology (M.P.J.G.), Jeroen Bosch Hospital, 's-Hertogenbosch; Department of Neurology (C.S.M.S.), Leiden University Medical Centre, the Netherlands; and Department of Neurology (K.C.G.), St. Elizabeth's Medical Centre, Tufts University, School of Medicine, Boston, MA.; Gilhuis HJ; From the Departments of Neurology (A.Y.D., C.W., B.v.d.B., C.V., J.R., S.E.L., K.K., B.C.J.), Public Health (H.F.L.), and Immunology (B.C.J.), Erasmus MC, University Medical Centre Rotterdam; Department of Neurology (C.W., J.P.A.S.), Maasstad Hospital, Rotterdam, the Netherlands; Laboratory of Gut-Brain Signaling (B.I., N.P., Z.I.), Laboratory Sciences and Services Division, Dhaka, Bangladesh; Department of Neurology (A.D., G. Chavada, H.J.W.), College of Medical, Veterinary and Life Sciences, University of Glasgow, UK; Department of Neurology (Y.Y., S. Kusunoki), Kindai University Faculty of Medicine, Osaka-Sayama City, Osaka, Japan; Department of Neurology (M.M.D.), University of Kansas Medical Center, Kansas City; Department of Neurology (W.W., N.K.), University of Vermont Medical Centre, Burlington; National Institute of Neurosciences and Hospital (Q.D.M.), Agargoan, Bangladesh; Department of Neurology (T.H.), Aarhus University Hospital; Department of Neurology (S.H.S.), Odense University Hospital and University of Southern Denmark, Odense, Denmark; Department of Neurology, Neuromuscular Unit (C.C.), Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Department of Neurology (K.B.), Groote Schuur Hospital, University of Cape Town, South Africa; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle, UK; Department of Neurology (B.v.d.B., C.J.G.), Franciscus Vlietland Hospital, Schiedam, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (S. Kuwabara), Chiba University, Japan; Department of Neurology (P.V.d.B.), Neuromuscular Reference Centre, University Hospital Saint-Luc, University of Louvain, Brussels, Belgium; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Dysimmune Neuropathies Unit, Department of Systems Medicine (G.A.M.), Tor Vergata University Hospital, Rome, Italy; Department of Medicine (N.S.), University of Malaya, Kuala Lumpur; Department of Neurology (G.G.), University Hospital of Modena, Italy; Department of Clinical Neurophysiology, Reference Centre for NMD (Y.P.), CHU Nantes, France; Department of Neurology (J.B.), Saarland University Medical School, Homburg-Saarland (previous affiliation); MVZ Pfalzklinikum (J.B.), Kusel, Germany (current affiliation); Department of Neurology (K.K., R.P.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (C.M.), Hospital Británico, Buenos Aires, Argentina; Department of Neurology (M.J.S.T.), Hospital Marques de Valdecilla, Santander; Department of Neurology (L.Q., I.I.), Hospital de la Santa Creu i Santa Pau, U.A.B. CIBERER and ERN-NMD, Barcelona, Spain; Department of Neurology (Y.W.), Affiliated Hospital of Jining Medical University, Shandong Province, China; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Clinical and Research Institute, Milan University, Rozzano, Italy; Nuffield Department of Clinical Neurosciences (S.R.), University of Oxford and Oxford University Hospitals NHS Foundation Trust, UK; Department of Neurosciences, Ophthalmology, Rehabilitation, Genetics and Maternal Sciences (A.S.), University of Genova; IRCCS San Martino Hospital (A.S.), Genova, Italy; Department of Neurology (J.P.), Hospital Clínico de Santiago, Santiago de Compostela (A Coruña), Spain; Department of Neurology (F.H.V.), Franciscus Vlietland Hospital (location: Franciscus Gasthuis), Rotterdam, the Netherlands; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (V.G.), Montefiore Medical Centre, Bronx, NY; Department of Neurology (G. Cavaletti), University Milano-Bicocca, Monza, Italy; Department of Neurology (G.G.-G.), Hospital Universitario Infanta Sofía, San Sebastián de los Reyes, Spain; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, Buenos Aires, Argentina; Department of Neurology (L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (H.D.K.), University Health Network, University of Toronto, Canada; Department of Neurology (E.D.), University Hospital of Larissa, Greece; Department of Neurology, Reference Centre for NMD (S.A.), CHU Timone, Marseille, France; Department of Neurology (A.J.v.d.K., F.E.), Amsterdam University Medical Centre, University of Amsterdam, Neuroscience Institute, Netherlands Neuromuscular Centre, Euro-NMD; Department of Neurology (P.W.W.), Haga Hospital, Den Haag; Department of Neurology (H.J.G.), Reinier de Graaf Hospital, Delft, the Netherlands; Department of Neurology (R.D.M.H.), King's College Hospital, London; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, UK; Department of Neurology (K.A.S.), University of Texas Health Science Centre at Houston; Department of Neurology (S. Karafiath), University of Utah School of Medicine, Salt Lake City; Department of Neurology (M.V.), Lahey Hospital and Medical Center, Tufts University School of Medicine, Burlington, MA; Department of Neurology (G.A.), Mental Health and Sensory Organs (NESMOS), University of Rome 'Sapienza,' Sant'Andrea Hospital, Rome, Italy; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Canada; Department of Neurology (C.G.F.), Maastricht University Medical Centre, the Netherlands; Department of Neurology (M.B.), Leeds Teaching Hospitals; Department of Neurology (R.C.R.), Addenbrooke's Hospital, Cambridge, UK; Department of Neurology (N.J.S.), University at Buffalo Jacobs School of Medicine and Biomedical Sciences, NY; Department of Neurology (R.F.), Scientific Institute San Raffaele, Milan, Italy; Department of Neurology (G.W.v.D.), Canisius Wilhelmina Hospital, Nijmegen; Department of Neurology (M.P.J.G.), Jeroen Bosch Hospital, 's-Hertogenbosch; Department of Neurology (C.S.M.S.), Leiden University Medical Centre, the Netherlands; and Department of Neurology (K.C.G.), St. Elizabeth's Medical Centre, Tufts University, School of Medicine, Boston, MA.; Hadden RDM; From the Departments of Neurology (A.Y.D., C.W., B.v.d.B., C.V., J.R., S.E.L., K.K., B.C.J.), Public Health (H.F.L.), and Immunology (B.C.J.), Erasmus MC, University Medical Centre Rotterdam; Department of Neurology (C.W., J.P.A.S.), Maasstad Hospital, Rotterdam, the Netherlands; Laboratory of Gut-Brain Signaling (B.I., N.P., Z.I.), Laboratory Sciences and Services Division, Dhaka, Bangladesh; Department of Neurology (A.D., G. Chavada, H.J.W.), College of Medical, Veterinary and Life Sciences, University of Glasgow, UK; Department of Neurology (Y.Y., S. Kusunoki), Kindai University Faculty of Medicine, Osaka-Sayama City, Osaka, Japan; Department of Neurology (M.M.D.), University of Kansas Medical Center, Kansas City; Department of Neurology (W.W., N.K.), University of Vermont Medical Centre, Burlington; National Institute of Neurosciences and Hospital (Q.D.M.), Agargoan, Bangladesh; Department of Neurology (T.H.), Aarhus University Hospital; Department of Neurology (S.H.S.), Odense University Hospital and University of Southern Denmark, Odense, Denmark; Department of Neurology, Neuromuscular Unit (C.C.), Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Department of Neurology (K.B.), Groote Schuur Hospital, University of Cape Town, South Africa; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle, UK; Department of Neurology (B.v.d.B., C.J.G.), Franciscus Vlietland Hospital, Schiedam, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (S. Kuwabara), Chiba University, Japan; Department of Neurology (P.V.d.B.), Neuromuscular Reference Centre, University Hospital Saint-Luc, University of Louvain, Brussels, Belgium; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Dysimmune Neuropathies Unit, Department of Systems Medicine (G.A.M.), Tor Vergata University Hospital, Rome, Italy; Department of Medicine (N.S.), University of Malaya, Kuala Lumpur; Department of Neurology (G.G.), University Hospital of Modena, Italy; Department of Clinical Neurophysiology, Reference Centre for NMD (Y.P.), CHU Nantes, France; Department of Neurology (J.B.), Saarland University Medical School, Homburg-Saarland (previous affiliation); MVZ Pfalzklinikum (J.B.), Kusel, Germany (current affiliation); Department of Neurology (K.K., R.P.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (C.M.), Hospital Británico, Buenos Aires, Argentina; Department of Neurology (M.J.S.T.), Hospital Marques de Valdecilla, Santander; Department of Neurology (L.Q., I.I.), Hospital de la Santa Creu i Santa Pau, U.A.B. CIBERER and ERN-NMD, Barcelona, Spain; Department of Neurology (Y.W.), Affiliated Hospital of Jining Medical University, Shandong Province, China; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Clinical and Research Institute, Milan University, Rozzano, Italy; Nuffield Department of Clinical Neurosciences (S.R.), University of Oxford and Oxford University Hospitals NHS Foundation Trust, UK; Department of Neurosciences, Ophthalmology, Rehabilitation, Genetics and Maternal Sciences (A.S.), University of Genova; IRCCS San Martino Hospital (A.S.), Genova, Italy; Department of Neurology (J.P.), Hospital Clínico de Santiago, Santiago de Compostela (A Coruña), Spain; Department of Neurology (F.H.V.), Franciscus Vlietland Hospital (location: Franciscus Gasthuis), Rotterdam, the Netherlands; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (V.G.), Montefiore Medical Centre, Bronx, NY; Department of Neurology (G. Cavaletti), University Milano-Bicocca, Monza, Italy; Department of Neurology (G.G.-G.), Hospital Universitario Infanta Sofía, San Sebastián de los Reyes, Spain; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, Buenos Aires, Argentina; Department of Neurology (L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (H.D.K.), University Health Network, University of Toronto, Canada; Department of Neurology (E.D.), University Hospital of Larissa, Greece; Department of Neurology, Reference Centre for NMD (S.A.), CHU Timone, Marseille, France; Department of Neurology (A.J.v.d.K., F.E.), Amsterdam University Medical Centre, University of Amsterdam, Neuroscience Institute, Netherlands Neuromuscular Centre, Euro-NMD; Department of Neurology (P.W.W.), Haga Hospital, Den Haag; Department of Neurology (H.J.G.), Reinier de Graaf Hospital, Delft, the Netherlands; Department of Neurology (R.D.M.H.), King's College Hospital, London; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, UK; Department of Neurology (K.A.S.), University of Texas Health Science Centre at Houston; Department of Neurology (S. Karafiath), University of Utah School of Medicine, Salt Lake City; Department of Neurology (M.V.), Lahey Hospital and Medical Center, Tufts University School of Medicine, Burlington, MA; Department of Neurology (G.A.), Mental Health and Sensory Organs (NESMOS), University of Rome 'Sapienza,' Sant'Andrea Hospital, Rome, Italy; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Canada; Department of Neurology (C.G.F.), Maastricht University Medical Centre, the Netherlands; Department of Neurology (M.B.), Leeds Teaching Hospitals; Department of Neurology (R.C.R.), Addenbrooke's Hospital, Cambridge, UK; Department of Neurology (N.J.S.), University at Buffalo Jacobs School of Medicine and Biomedical Sciences, NY; Department of Neurology (R.F.), Scientific Institute San Raffaele, Milan, Italy; Department of Neurology (G.W.v.D.), Canisius Wilhelmina Hospital, Nijmegen; Department of Neurology (M.P.J.G.), Jeroen Bosch Hospital, 's-Hertogenbosch; Department of Neurology (C.S.M.S.), Leiden University Medical Centre, the Netherlands; and Department of Neurology (K.C.G.), St. Elizabeth's Medical Centre, Tufts University, School of Medicine, Boston, MA.; Holt JKL; From the Departments of Neurology (A.Y.D., C.W., B.v.d.B., C.V., J.R., S.E.L., K.K., B.C.J.), Public Health (H.F.L.), and Immunology (B.C.J.), Erasmus MC, University Medical Centre Rotterdam; Department of Neurology (C.W., J.P.A.S.), Maasstad Hospital, Rotterdam, the Netherlands; Laboratory of Gut-Brain Signaling (B.I., N.P., Z.I.), Laboratory Sciences and Services Division, Dhaka, Bangladesh; Department of Neurology (A.D., G. Chavada, H.J.W.), College of Medical, Veterinary and Life Sciences, University of Glasgow, UK; Department of Neurology (Y.Y., S. Kusunoki), Kindai University Faculty of Medicine, Osaka-Sayama City, Osaka, Japan; Department of Neurology (M.M.D.), University of Kansas Medical Center, Kansas City; Department of Neurology (W.W., N.K.), University of Vermont Medical Centre, Burlington; National Institute of Neurosciences and Hospital (Q.D.M.), Agargoan, Bangladesh; Department of Neurology (T.H.), Aarhus University Hospital; Department of Neurology (S.H.S.), Odense University Hospital and University of Southern Denmark, Odense, Denmark; Department of Neurology, Neuromuscular Unit (C.C.), Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Department of Neurology (K.B.), Groote Schuur Hospital, University of Cape Town, South Africa; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle, UK; Department of Neurology (B.v.d.B., C.J.G.), Franciscus Vlietland Hospital, Schiedam, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (S. Kuwabara), Chiba University, Japan; Department of Neurology (P.V.d.B.), Neuromuscular Reference Centre, University Hospital Saint-Luc, University of Louvain, Brussels, Belgium; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Dysimmune Neuropathies Unit, Department of Systems Medicine (G.A.M.), Tor Vergata University Hospital, Rome, Italy; Department of Medicine (N.S.), University of Malaya, Kuala Lumpur; Department of Neurology (G.G.), University Hospital of Modena, Italy; Department of Clinical Neurophysiology, Reference Centre for NMD (Y.P.), CHU Nantes, France; Department of Neurology (J.B.), Saarland University Medical School, Homburg-Saarland (previous affiliation); MVZ Pfalzklinikum (J.B.), Kusel, Germany (current affiliation); Department of Neurology (K.K., R.P.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (C.M.), Hospital Británico, Buenos Aires, Argentina; Department of Neurology (M.J.S.T.), Hospital Marques de Valdecilla, Santander; Department of Neurology (L.Q., I.I.), Hospital de la Santa Creu i Santa Pau, U.A.B. CIBERER and ERN-NMD, Barcelona, Spain; Department of Neurology (Y.W.), Affiliated Hospital of Jining Medical University, Shandong Province, China; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Clinical and Research Institute, Milan University, Rozzano, Italy; Nuffield Department of Clinical Neurosciences (S.R.), University of Oxford and Oxford University Hospitals NHS Foundation Trust, UK; Department of Neurosciences, Ophthalmology, Rehabilitation, Genetics and Maternal Sciences (A.S.), University of Genova; IRCCS San Martino Hospital (A.S.), Genova, Italy; Department of Neurology (J.P.), Hospital Clínico de Santiago, Santiago de Compostela (A Coruña), Spain; Department of Neurology (F.H.V.), Franciscus Vlietland Hospital (location: Franciscus Gasthuis), Rotterdam, the Netherlands; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (V.G.), Montefiore Medical Centre, Bronx, NY; Department of Neurology (G. Cavaletti), University Milano-Bicocca, Monza, Italy; Department of Neurology (G.G.-G.), Hospital Universitario Infanta Sofía, San Sebastián de los Reyes, Spain; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, Buenos Aires, Argentina; Department of Neurology (L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (H.D.K.), University Health Network, University of Toronto, Canada; Department of Neurology (E.D.), University Hospital of Larissa, Greece; Department of Neurology, Reference Centre for NMD (S.A.), CHU Timone, Marseille, France; Department of Neurology (A.J.v.d.K., F.E.), Amsterdam University Medical Centre, University of Amsterdam, Neuroscience Institute, Netherlands Neuromuscular Centre, Euro-NMD; Department of Neurology (P.W.W.), Haga Hospital, Den Haag; Department of Neurology (H.J.G.), Reinier de Graaf Hospital, Delft, the Netherlands; Department of Neurology (R.D.M.H.), King's College Hospital, London; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, UK; Department of Neurology (K.A.S.), University of Texas Health Science Centre at Houston; Department of Neurology (S. Karafiath), University of Utah School of Medicine, Salt Lake City; Department of Neurology (M.V.), Lahey Hospital and Medical Center, Tufts University School of Medicine, Burlington, MA; Department of Neurology (G.A.), Mental Health and Sensory Organs (NESMOS), University of Rome 'Sapienza,' Sant'Andrea Hospital, Rome, Italy; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Canada; Department of Neurology (C.G.F.), Maastricht University Medical Centre, the Netherlands; Department of Neurology (M.B.), Leeds Teaching Hospitals; Department of Neurology (R.C.R.), Addenbrooke's Hospital, Cambridge, UK; Department of Neurology (N.J.S.), University at Buffalo Jacobs School of Medicine and Biomedical Sciences, NY; Department of Neurology (R.F.), Scientific Institute San Raffaele, Milan, Italy; Department of Neurology (G.W.v.D.), Canisius Wilhelmina Hospital, Nijmegen; Department of Neurology (M.P.J.G.), Jeroen Bosch Hospital, 's-Hertogenbosch; Department of Neurology (C.S.M.S.), Leiden University Medical Centre, the Netherlands; and Department of Neurology (K.C.G.), St. Elizabeth's Medical Centre, Tufts University, School of Medicine, Boston, MA.; Sheikh KA; From the Departments of Neurology (A.Y.D., C.W., B.v.d.B., C.V., J.R., S.E.L., K.K., B.C.J.), Public Health (H.F.L.), and Immunology (B.C.J.), Erasmus MC, University Medical Centre Rotterdam; Department of Neurology (C.W., J.P.A.S.), Maasstad Hospital, Rotterdam, the Netherlands; Laboratory of Gut-Brain Signaling (B.I., N.P., Z.I.), Laboratory Sciences and Services Division, Dhaka, Bangladesh; Department of Neurology (A.D., G. Chavada, H.J.W.), College of Medical, Veterinary and Life Sciences, University of Glasgow, UK; Department of Neurology (Y.Y., S. Kusunoki), Kindai University Faculty of Medicine, Osaka-Sayama City, Osaka, Japan; Department of Neurology (M.M.D.), University of Kansas Medical Center, Kansas City; Department of Neurology (W.W., N.K.), University of Vermont Medical Centre, Burlington; National Institute of Neurosciences and Hospital (Q.D.M.), Agargoan, Bangladesh; Department of Neurology (T.H.), Aarhus University Hospital; Department of Neurology (S.H.S.), Odense University Hospital and University of Southern Denmark, Odense, Denmark; Department of Neurology, Neuromuscular Unit (C.C.), Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Department of Neurology (K.B.), Groote Schuur Hospital, University of Cape Town, South Africa; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle, UK; Department of Neurology (B.v.d.B., C.J.G.), Franciscus Vlietland Hospital, Schiedam, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (S. Kuwabara), Chiba University, Japan; Department of Neurology (P.V.d.B.), Neuromuscular Reference Centre, University Hospital Saint-Luc, University of Louvain, Brussels, Belgium; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Dysimmune Neuropathies Unit, Department of Systems Medicine (G.A.M.), Tor Vergata University Hospital, Rome, Italy; Department of Medicine (N.S.), University of Malaya, Kuala Lumpur; Department of Neurology (G.G.), University Hospital of Modena, Italy; Department of Clinical Neurophysiology, Reference Centre for NMD (Y.P.), CHU Nantes, France; Department of Neurology (J.B.), Saarland University Medical School, Homburg-Saarland (previous affiliation); MVZ Pfalzklinikum (J.B.), Kusel, Germany (current affiliation); Department of Neurology (K.K., R.P.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (C.M.), Hospital Británico, Buenos Aires, Argentina; Department of Neurology (M.J.S.T.), Hospital Marques de Valdecilla, Santander; Department of Neurology (L.Q., I.I.), Hospital de la Santa Creu i Santa Pau, U.A.B. CIBERER and ERN-NMD, Barcelona, Spain; Department of Neurology (Y.W.), Affiliated Hospital of Jining Medical University, Shandong Province, China; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Clinical and Research Institute, Milan University, Rozzano, Italy; Nuffield Department of Clinical Neurosciences (S.R.), University of Oxford and Oxford University Hospitals NHS Foundation Trust, UK; Department of Neurosciences, Ophthalmology, Rehabilitation, Genetics and Maternal Sciences (A.S.), University of Genova; IRCCS San Martino Hospital (A.S.), Genova, Italy; Department of Neurology (J.P.), Hospital Clínico de Santiago, Santiago de Compostela (A Coruña), Spain; Department of Neurology (F.H.V.), Franciscus Vlietland Hospital (location: Franciscus Gasthuis), Rotterdam, the Netherlands; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (V.G.), Montefiore Medical Centre, Bronx, NY; Department of Neurology (G. Cavaletti), University Milano-Bicocca, Monza, Italy; Department of Neurology (G.G.-G.), Hospital Universitario Infanta Sofía, San Sebastián de los Reyes, Spain; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, Buenos Aires, Argentina; Department of Neurology (L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (H.D.K.), University Health Network, University of Toronto, Canada; Department of Neurology (E.D.), University Hospital of Larissa, Greece; Department of Neurology, Reference Centre for NMD (S.A.), CHU Timone, Marseille, France; Department of Neurology (A.J.v.d.K., F.E.), Amsterdam University Medical Centre, University of Amsterdam, Neuroscience Institute, Netherlands Neuromuscular Centre, Euro-NMD; Department of Neurology (P.W.W.), Haga Hospital, Den Haag; Department of Neurology (H.J.G.), Reinier de Graaf Hospital, Delft, the Netherlands; Department of Neurology (R.D.M.H.), King's College Hospital, London; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, UK; Department of Neurology (K.A.S.), University of Texas Health Science Centre at Houston; Department of Neurology (S. Karafiath), University of Utah School of Medicine, Salt Lake City; Department of Neurology (M.V.), Lahey Hospital and Medical Center, Tufts University School of Medicine, Burlington, MA; Department of Neurology (G.A.), Mental Health and Sensory Organs (NESMOS), University of Rome 'Sapienza,' Sant'Andrea Hospital, Rome, Italy; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Canada; Department of Neurology (C.G.F.), Maastricht University Medical Centre, the Netherlands; Department of Neurology (M.B.), Leeds Teaching Hospitals; Department of Neurology (R.C.R.), Addenbrooke's Hospital, Cambridge, UK; Department of Neurology (N.J.S.), University at Buffalo Jacobs School of Medicine and Biomedical Sciences, NY; Department of Neurology (R.F.), Scientific Institute San Raffaele, Milan, Italy; Department of Neurology (G.W.v.D.), Canisius Wilhelmina Hospital, Nijmegen; Department of Neurology (M.P.J.G.), Jeroen Bosch Hospital, 's-Hertogenbosch; Department of Neurology (C.S.M.S.), Leiden University Medical Centre, the Netherlands; and Department of Neurology (K.C.G.), St. Elizabeth's Medical Centre, Tufts University, School of Medicine, Boston, MA.; Karafiath S; From the Departments of Neurology (A.Y.D., C.W., B.v.d.B., C.V., J.R., S.E.L., K.K., B.C.J.), Public Health (H.F.L.), and Immunology (B.C.J.), Erasmus MC, University Medical Centre Rotterdam; Department of Neurology (C.W., J.P.A.S.), Maasstad Hospital, Rotterdam, the Netherlands; Laboratory of Gut-Brain Signaling (B.I., N.P., Z.I.), Laboratory Sciences and Services Division, Dhaka, Bangladesh; Department of Neurology (A.D., G. Chavada, H.J.W.), College of Medical, Veterinary and Life Sciences, University of Glasgow, UK; Department of Neurology (Y.Y., S. Kusunoki), Kindai University Faculty of Medicine, Osaka-Sayama City, Osaka, Japan; Department of Neurology (M.M.D.), University of Kansas Medical Center, Kansas City; Department of Neurology (W.W., N.K.), University of Vermont Medical Centre, Burlington; National Institute of Neurosciences and Hospital (Q.D.M.), Agargoan, Bangladesh; Department of Neurology (T.H.), Aarhus University Hospital; Department of Neurology (S.H.S.), Odense University Hospital and University of Southern Denmark, Odense, Denmark; Department of Neurology, Neuromuscular Unit (C.C.), Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Department of Neurology (K.B.), Groote Schuur Hospital, University of Cape Town, South Africa; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle, UK; Department of Neurology (B.v.d.B., C.J.G.), Franciscus Vlietland Hospital, Schiedam, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (S. Kuwabara), Chiba University, Japan; Department of Neurology (P.V.d.B.), Neuromuscular Reference Centre, University Hospital Saint-Luc, University of Louvain, Brussels, Belgium; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Dysimmune Neuropathies Unit, Department of Systems Medicine (G.A.M.), Tor Vergata University Hospital, Rome, Italy; Department of Medicine (N.S.), University of Malaya, Kuala Lumpur; Department of Neurology (G.G.), University Hospital of Modena, Italy; Department of Clinical Neurophysiology, Reference Centre for NMD (Y.P.), CHU Nantes, France; Department of Neurology (J.B.), Saarland University Medical School, Homburg-Saarland (previous affiliation); MVZ Pfalzklinikum (J.B.), Kusel, Germany (current affiliation); Department of Neurology (K.K., R.P.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (C.M.), Hospital Británico, Buenos Aires, Argentina; Department of Neurology (M.J.S.T.), Hospital Marques de Valdecilla, Santander; Department of Neurology (L.Q., I.I.), Hospital de la Santa Creu i Santa Pau, U.A.B. CIBERER and ERN-NMD, Barcelona, Spain; Department of Neurology (Y.W.), Affiliated Hospital of Jining Medical University, Shandong Province, China; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Clinical and Research Institute, Milan University, Rozzano, Italy; Nuffield Department of Clinical Neurosciences (S.R.), University of Oxford and Oxford University Hospitals NHS Foundation Trust, UK; Department of Neurosciences, Ophthalmology, Rehabilitation, Genetics and Maternal Sciences (A.S.), University of Genova; IRCCS San Martino Hospital (A.S.), Genova, Italy; Department of Neurology (J.P.), Hospital Clínico de Santiago, Santiago de Compostela (A Coruña), Spain; Department of Neurology (F.H.V.), Franciscus Vlietland Hospital (location: Franciscus Gasthuis), Rotterdam, the Netherlands; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (V.G.), Montefiore Medical Centre, Bronx, NY; Department of Neurology (G. Cavaletti), University Milano-Bicocca, Monza, Italy; Department of Neurology (G.G.-G.), Hospital Universitario Infanta Sofía, San Sebastián de los Reyes, Spain; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, Buenos Aires, Argentina; Department of Neurology (L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (H.D.K.), University Health Network, University of Toronto, Canada; Department of Neurology (E.D.), University Hospital of Larissa, Greece; Department of Neurology, Reference Centre for NMD (S.A.), CHU Timone, Marseille, France; Department of Neurology (A.J.v.d.K., F.E.), Amsterdam University Medical Centre, University of Amsterdam, Neuroscience Institute, Netherlands Neuromuscular Centre, Euro-NMD; Department of Neurology (P.W.W.), Haga Hospital, Den Haag; Department of Neurology (H.J.G.), Reinier de Graaf Hospital, Delft, the Netherlands; Department of Neurology (R.D.M.H.), King's College Hospital, London; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, UK; Department of Neurology (K.A.S.), University of Texas Health Science Centre at Houston; Department of Neurology (S. Karafiath), University of Utah School of Medicine, Salt Lake City; Department of Neurology (M.V.), Lahey Hospital and Medical Center, Tufts University School of Medicine, Burlington, MA; Department of Neurology (G.A.), Mental Health and Sensory Organs (NESMOS), University of Rome 'Sapienza,' Sant'Andrea Hospital, Rome, Italy; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Canada; Department of Neurology (C.G.F.), Maastricht University Medical Centre, the Netherlands; Department of Neurology (M.B.), Leeds Teaching Hospitals; Department of Neurology (R.C.R.), Addenbrooke's Hospital, Cambridge, UK; Department of Neurology (N.J.S.), University at Buffalo Jacobs School of Medicine and Biomedical Sciences, NY; Department of Neurology (R.F.), Scientific Institute San Raffaele, Milan, Italy; Department of Neurology (G.W.v.D.), Canisius Wilhelmina Hospital, Nijmegen; Department of Neurology (M.P.J.G.), Jeroen Bosch Hospital, 's-Hertogenbosch; Department of Neurology (C.S.M.S.), Leiden University Medical Centre, the Netherlands; and Department of Neurology (K.C.G.), St. Elizabeth's Medical Centre, Tufts University, School of Medicine, Boston, MA.; Vytopil M; From the Departments of Neurology (A.Y.D., C.W., B.v.d.B., C.V., J.R., S.E.L., K.K., B.C.J.), Public Health (H.F.L.), and Immunology (B.C.J.), Erasmus MC, University Medical Centre Rotterdam; Department of Neurology (C.W., J.P.A.S.), Maasstad Hospital, Rotterdam, the Netherlands; Laboratory of Gut-Brain Signaling (B.I., N.P., Z.I.), Laboratory Sciences and Services Division, Dhaka, Bangladesh; Department of Neurology (A.D., G. Chavada, H.J.W.), College of Medical, Veterinary and Life Sciences, University of Glasgow, UK; Department of Neurology (Y.Y., S. Kusunoki), Kindai University Faculty of Medicine, Osaka-Sayama City, Osaka, Japan; Department of Neurology (M.M.D.), University of Kansas Medical Center, Kansas City; Department of Neurology (W.W., N.K.), University of Vermont Medical Centre, Burlington; National Institute of Neurosciences and Hospital (Q.D.M.), Agargoan, Bangladesh; Department of Neurology (T.H.), Aarhus University Hospital; Department of Neurology (S.H.S.), Odense University Hospital and University of Southern Denmark, Odense, Denmark; Department of Neurology, Neuromuscular Unit (C.C.), Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Department of Neurology (K.B.), Groote Schuur Hospital, University of Cape Town, South Africa; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle, UK; Department of Neurology (B.v.d.B., C.J.G.), Franciscus Vlietland Hospital, Schiedam, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (S. Kuwabara), Chiba University, Japan; Department of Neurology (P.V.d.B.), Neuromuscular Reference Centre, University Hospital Saint-Luc, University of Louvain, Brussels, Belgium; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Dysimmune Neuropathies Unit, Department of Systems Medicine (G.A.M.), Tor Vergata University Hospital, Rome, Italy; Department of Medicine (N.S.), University of Malaya, Kuala Lumpur; Department of Neurology (G.G.), University Hospital of Modena, Italy; Department of Clinical Neurophysiology, Reference Centre for NMD (Y.P.), CHU Nantes, France; Department of Neurology (J.B.), Saarland University Medical School, Homburg-Saarland (previous affiliation); MVZ Pfalzklinikum (J.B.), Kusel, Germany (current affiliation); Department of Neurology (K.K., R.P.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (C.M.), Hospital Británico, Buenos Aires, Argentina; Department of Neurology (M.J.S.T.), Hospital Marques de Valdecilla, Santander; Department of Neurology (L.Q., I.I.), Hospital de la Santa Creu i Santa Pau, U.A.B. CIBERER and ERN-NMD, Barcelona, Spain; Department of Neurology (Y.W.), Affiliated Hospital of Jining Medical University, Shandong Province, China; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Clinical and Research Institute, Milan University, Rozzano, Italy; Nuffield Department of Clinical Neurosciences (S.R.), University of Oxford and Oxford University Hospitals NHS Foundation Trust, UK; Department of Neurosciences, Ophthalmology, Rehabilitation, Genetics and Maternal Sciences (A.S.), University of Genova; IRCCS San Martino Hospital (A.S.), Genova, Italy; Department of Neurology (J.P.), Hospital Clínico de Santiago, Santiago de Compostela (A Coruña), Spain; Department of Neurology (F.H.V.), Franciscus Vlietland Hospital (location: Franciscus Gasthuis), Rotterdam, the Netherlands; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (V.G.), Montefiore Medical Centre, Bronx, NY; Department of Neurology (G. Cavaletti), University Milano-Bicocca, Monza, Italy; Department of Neurology (G.G.-G.), Hospital Universitario Infanta Sofía, San Sebastián de los Reyes, Spain; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, Buenos Aires, Argentina; Department of Neurology (L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (H.D.K.), University Health Network, University of Toronto, Canada; Department of Neurology (E.D.), University Hospital of Larissa, Greece; Department of Neurology, Reference Centre for NMD (S.A.), CHU Timone, Marseille, France; Department of Neurology (A.J.v.d.K., F.E.), Amsterdam University Medical Centre, University of Amsterdam, Neuroscience Institute, Netherlands Neuromuscular Centre, Euro-NMD; Department of Neurology (P.W.W.), Haga Hospital, Den Haag; Department of Neurology (H.J.G.), Reinier de Graaf Hospital, Delft, the Netherlands; Department of Neurology (R.D.M.H.), King's College Hospital, London; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, UK; Department of Neurology (K.A.S.), University of Texas Health Science Centre at Houston; Department of Neurology (S. Karafiath), University of Utah School of Medicine, Salt Lake City; Department of Neurology (M.V.), Lahey Hospital and Medical Center, Tufts University School of Medicine, Burlington, MA; Department of Neurology (G.A.), Mental Health and Sensory Organs (NESMOS), University of Rome 'Sapienza,' Sant'Andrea Hospital, Rome, Italy; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Canada; Department of Neurology (C.G.F.), Maastricht University Medical Centre, the Netherlands; Department of Neurology (M.B.), Leeds Teaching Hospitals; Department of Neurology (R.C.R.), Addenbrooke's Hospital, Cambridge, UK; Department of Neurology (N.J.S.), University at Buffalo Jacobs School of Medicine and Biomedical Sciences, NY; Department of Neurology (R.F.), Scientific Institute San Raffaele, Milan, Italy; Department of Neurology (G.W.v.D.), Canisius Wilhelmina Hospital, Nijmegen; Department of Neurology (M.P.J.G.), Jeroen Bosch Hospital, 's-Hertogenbosch; Department of Neurology (C.S.M.S.), Leiden University Medical Centre, the Netherlands; and Department of Neurology (K.C.G.), St. Elizabeth's Medical Centre, Tufts University, School of Medicine, Boston, MA.; Antonini G; From the Departments of Neurology (A.Y.D., C.W., B.v.d.B., C.V., J.R., S.E.L., K.K., B.C.J.), Public Health (H.F.L.), and Immunology (B.C.J.), Erasmus MC, University Medical Centre Rotterdam; Department of Neurology (C.W., J.P.A.S.), Maasstad Hospital, Rotterdam, the Netherlands; Laboratory of Gut-Brain Signaling (B.I., N.P., Z.I.), Laboratory Sciences and Services Division, Dhaka, Bangladesh; Department of Neurology (A.D., G. Chavada, H.J.W.), College of Medical, Veterinary and Life Sciences, University of Glasgow, UK; Department of Neurology (Y.Y., S. Kusunoki), Kindai University Faculty of Medicine, Osaka-Sayama City, Osaka, Japan; Department of Neurology (M.M.D.), University of Kansas Medical Center, Kansas City; Department of Neurology (W.W., N.K.), University of Vermont Medical Centre, Burlington; National Institute of Neurosciences and Hospital (Q.D.M.), Agargoan, Bangladesh; Department of Neurology (T.H.), Aarhus University Hospital; Department of Neurology (S.H.S.), Odense University Hospital and University of Southern Denmark, Odense, Denmark; Department of Neurology, Neuromuscular Unit (C.C.), Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Department of Neurology (K.B.), Groote Schuur Hospital, University of Cape Town, South Africa; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle, UK; Department of Neurology (B.v.d.B., C.J.G.), Franciscus Vlietland Hospital, Schiedam, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (S. Kuwabara), Chiba University, Japan; Department of Neurology (P.V.d.B.), Neuromuscular Reference Centre, University Hospital Saint-Luc, University of Louvain, Brussels, Belgium; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Dysimmune Neuropathies Unit, Department of Systems Medicine (G.A.M.), Tor Vergata University Hospital, Rome, Italy; Department of Medicine (N.S.), University of Malaya, Kuala Lumpur; Department of Neurology (G.G.), University Hospital of Modena, Italy; Department of Clinical Neurophysiology, Reference Centre for NMD (Y.P.), CHU Nantes, France; Department of Neurology (J.B.), Saarland University Medical School, Homburg-Saarland (previous affiliation); MVZ Pfalzklinikum (J.B.), Kusel, Germany (current affiliation); Department of Neurology (K.K., R.P.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (C.M.), Hospital Británico, Buenos Aires, Argentina; Department of Neurology (M.J.S.T.), Hospital Marques de Valdecilla, Santander; Department of Neurology (L.Q., I.I.), Hospital de la Santa Creu i Santa Pau, U.A.B. CIBERER and ERN-NMD, Barcelona, Spain; Department of Neurology (Y.W.), Affiliated Hospital of Jining Medical University, Shandong Province, China; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Clinical and Research Institute, Milan University, Rozzano, Italy; Nuffield Department of Clinical Neurosciences (S.R.), University of Oxford and Oxford University Hospitals NHS Foundation Trust, UK; Department of Neurosciences, Ophthalmology, Rehabilitation, Genetics and Maternal Sciences (A.S.), University of Genova; IRCCS San Martino Hospital (A.S.), Genova, Italy; Department of Neurology (J.P.), Hospital Clínico de Santiago, Santiago de Compostela (A Coruña), Spain; Department of Neurology (F.H.V.), Franciscus Vlietland Hospital (location: Franciscus Gasthuis), Rotterdam, the Netherlands; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (V.G.), Montefiore Medical Centre, Bronx, NY; Department of Neurology (G. Cavaletti), University Milano-Bicocca, Monza, Italy; Department of Neurology (G.G.-G.), Hospital Universitario Infanta Sofía, San Sebastián de los Reyes, Spain; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, Buenos Aires, Argentina; Department of Neurology (L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (H.D.K.), University Health Network, University of Toronto, Canada; Department of Neurology (E.D.), University Hospital of Larissa, Greece; Department of Neurology, Reference Centre for NMD (S.A.), CHU Timone, Marseille, France; Department of Neurology (A.J.v.d.K., F.E.), Amsterdam University Medical Centre, University of Amsterdam, Neuroscience Institute, Netherlands Neuromuscular Centre, Euro-NMD; Department of Neurology (P.W.W.), Haga Hospital, Den Haag; Department of Neurology (H.J.G.), Reinier de Graaf Hospital, Delft, the Netherlands; Department of Neurology (R.D.M.H.), King's College Hospital, London; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, UK; Department of Neurology (K.A.S.), University of Texas Health Science Centre at Houston; Department of Neurology (S. Karafiath), University of Utah School of Medicine, Salt Lake City; Department of Neurology (M.V.), Lahey Hospital and Medical Center, Tufts University School of Medicine, Burlington, MA; Department of Neurology (G.A.), Mental Health and Sensory Organs (NESMOS), University of Rome 'Sapienza,' Sant'Andrea Hospital, Rome, Italy; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Canada; Department of Neurology (C.G.F.), Maastricht University Medical Centre, the Netherlands; Department of Neurology (M.B.), Leeds Teaching Hospitals; Department of Neurology (R.C.R.), Addenbrooke's Hospital, Cambridge, UK; Department of Neurology (N.J.S.), University at Buffalo Jacobs School of Medicine and Biomedical Sciences, NY; Department of Neurology (R.F.), Scientific Institute San Raffaele, Milan, Italy; Department of Neurology (G.W.v.D.), Canisius Wilhelmina Hospital, Nijmegen; Department of Neurology (M.P.J.G.), Jeroen Bosch Hospital, 's-Hertogenbosch; Department of Neurology (C.S.M.S.), Leiden University Medical Centre, the Netherlands; and Department of Neurology (K.C.G.), St. Elizabeth's Medical Centre, Tufts University, School of Medicine, Boston, MA.; Feasby TE; From the Departments of Neurology (A.Y.D., C.W., B.v.d.B., C.V., J.R., S.E.L., K.K., B.C.J.), Public Health (H.F.L.), and Immunology (B.C.J.), Erasmus MC, University Medical Centre Rotterdam; Department of Neurology (C.W., J.P.A.S.), Maasstad Hospital, Rotterdam, the Netherlands; Laboratory of Gut-Brain Signaling (B.I., N.P., Z.I.), Laboratory Sciences and Services Division, Dhaka, Bangladesh; Department of Neurology (A.D., G. Chavada, H.J.W.), College of Medical, Veterinary and Life Sciences, University of Glasgow, UK; Department of Neurology (Y.Y., S. Kusunoki), Kindai University Faculty of Medicine, Osaka-Sayama City, Osaka, Japan; Department of Neurology (M.M.D.), University of Kansas Medical Center, Kansas City; Department of Neurology (W.W., N.K.), University of Vermont Medical Centre, Burlington; National Institute of Neurosciences and Hospital (Q.D.M.), Agargoan, Bangladesh; Department of Neurology (T.H.), Aarhus University Hospital; Department of Neurology (S.H.S.), Odense University Hospital and University of Southern Denmark, Odense, Denmark; Department of Neurology, Neuromuscular Unit (C.C.), Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Department of Neurology (K.B.), Groote Schuur Hospital, University of Cape Town, South Africa; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle, UK; Department of Neurology (B.v.d.B., C.J.G.), Franciscus Vlietland Hospital, Schiedam, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (S. Kuwabara), Chiba University, Japan; Department of Neurology (P.V.d.B.), Neuromuscular Reference Centre, University Hospital Saint-Luc, University of Louvain, Brussels, Belgium; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Dysimmune Neuropathies Unit, Department of Systems Medicine (G.A.M.), Tor Vergata University Hospital, Rome, Italy; Department of Medicine (N.S.), University of Malaya, Kuala Lumpur; Department of Neurology (G.G.), University Hospital of Modena, Italy; Department of Clinical Neurophysiology, Reference Centre for NMD (Y.P.), CHU Nantes, France; Department of Neurology (J.B.), Saarland University Medical School, Homburg-Saarland (previous affiliation); MVZ Pfalzklinikum (J.B.), Kusel, Germany (current affiliation); Department of Neurology (K.K., R.P.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (C.M.), Hospital Británico, Buenos Aires, Argentina; Department of Neurology (M.J.S.T.), Hospital Marques de Valdecilla, Santander; Department of Neurology (L.Q., I.I.), Hospital de la Santa Creu i Santa Pau, U.A.B. CIBERER and ERN-NMD, Barcelona, Spain; Department of Neurology (Y.W.), Affiliated Hospital of Jining Medical University, Shandong Province, China; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Clinical and Research Institute, Milan University, Rozzano, Italy; Nuffield Department of Clinical Neurosciences (S.R.), University of Oxford and Oxford University Hospitals NHS Foundation Trust, UK; Department of Neurosciences, Ophthalmology, Rehabilitation, Genetics and Maternal Sciences (A.S.), University of Genova; IRCCS San Martino Hospital (A.S.), Genova, Italy; Department of Neurology (J.P.), Hospital Clínico de Santiago, Santiago de Compostela (A Coruña), Spain; Department of Neurology (F.H.V.), Franciscus Vlietland Hospital (location: Franciscus Gasthuis), Rotterdam, the Netherlands; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (V.G.), Montefiore Medical Centre, Bronx, NY; Department of Neurology (G. Cavaletti), University Milano-Bicocca, Monza, Italy; Department of Neurology (G.G.-G.), Hospital Universitario Infanta Sofía, San Sebastián de los Reyes, Spain; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, Buenos Aires, Argentina; Department of Neurology (L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (H.D.K.), University Health Network, University of Toronto, Canada; Department of Neurology (E.D.), University Hospital of Larissa, Greece; Department of Neurology, Reference Centre for NMD (S.A.), CHU Timone, Marseille, France; Department of Neurology (A.J.v.d.K., F.E.), Amsterdam University Medical Centre, University of Amsterdam, Neuroscience Institute, Netherlands Neuromuscular Centre, Euro-NMD; Department of Neurology (P.W.W.), Haga Hospital, Den Haag; Department of Neurology (H.J.G.), Reinier de Graaf Hospital, Delft, the Netherlands; Department of Neurology (R.D.M.H.), King's College Hospital, London; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, UK; Department of Neurology (K.A.S.), University of Texas Health Science Centre at Houston; Department of Neurology (S. Karafiath), University of Utah School of Medicine, Salt Lake City; Department of Neurology (M.V.), Lahey Hospital and Medical Center, Tufts University School of Medicine, Burlington, MA; Department of Neurology (G.A.), Mental Health and Sensory Organs (NESMOS), University of Rome 'Sapienza,' Sant'Andrea Hospital, Rome, Italy; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Canada; Department of Neurology (C.G.F.), Maastricht University Medical Centre, the Netherlands; Department of Neurology (M.B.), Leeds Teaching Hospitals; Department of Neurology (R.C.R.), Addenbrooke's Hospital, Cambridge, UK; Department of Neurology (N.J.S.), University at Buffalo Jacobs School of Medicine and Biomedical Sciences, NY; Department of Neurology (R.F.), Scientific Institute San Raffaele, Milan, Italy; Department of Neurology (G.W.v.D.), Canisius Wilhelmina Hospital, Nijmegen; Department of Neurology (M.P.J.G.), Jeroen Bosch Hospital, 's-Hertogenbosch; Department of Neurology (C.S.M.S.), Leiden University Medical Centre, the Netherlands; and Department of Neurology (K.C.G.), St. Elizabeth's Medical Centre, Tufts University, School of Medicine, Boston, MA.; Faber CG; From the Departments of Neurology (A.Y.D., C.W., B.v.d.B., C.V., J.R., S.E.L., K.K., B.C.J.), Public Health (H.F.L.), and Immunology (B.C.J.), Erasmus MC, University Medical Centre Rotterdam; Department of Neurology (C.W., J.P.A.S.), Maasstad Hospital, Rotterdam, the Netherlands; Laboratory of Gut-Brain Signaling (B.I., N.P., Z.I.), Laboratory Sciences and Services Division, Dhaka, Bangladesh; Department of Neurology (A.D., G. Chavada, H.J.W.), College of Medical, Veterinary and Life Sciences, University of Glasgow, UK; Department of Neurology (Y.Y., S. Kusunoki), Kindai University Faculty of Medicine, Osaka-Sayama City, Osaka, Japan; Department of Neurology (M.M.D.), University of Kansas Medical Center, Kansas City; Department of Neurology (W.W., N.K.), University of Vermont Medical Centre, Burlington; National Institute of Neurosciences and Hospital (Q.D.M.), Agargoan, Bangladesh; Department of Neurology (T.H.), Aarhus University Hospital; Department of Neurology (S.H.S.), Odense University Hospital and University of Southern Denmark, Odense, Denmark; Department of Neurology, Neuromuscular Unit (C.C.), Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Department of Neurology (K.B.), Groote Schuur Hospital, University of Cape Town, South Africa; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle, UK; Department of Neurology (B.v.d.B., C.J.G.), Franciscus Vlietland Hospital, Schiedam, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (S. Kuwabara), Chiba University, Japan; Department of Neurology (P.V.d.B.), Neuromuscular Reference Centre, University Hospital Saint-Luc, University of Louvain, Brussels, Belgium; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Dysimmune Neuropathies Unit, Department of Systems Medicine (G.A.M.), Tor Vergata University Hospital, Rome, Italy; Department of Medicine (N.S.), University of Malaya, Kuala Lumpur; Department of Neurology (G.G.), University Hospital of Modena, Italy; Department of Clinical Neurophysiology, Reference Centre for NMD (Y.P.), CHU Nantes, France; Department of Neurology (J.B.), Saarland University Medical School, Homburg-Saarland (previous affiliation); MVZ Pfalzklinikum (J.B.), Kusel, Germany (current affiliation); Department of Neurology (K.K., R.P.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (C.M.), Hospital Británico, Buenos Aires, Argentina; Department of Neurology (M.J.S.T.), Hospital Marques de Valdecilla, Santander; Department of Neurology (L.Q., I.I.), Hospital de la Santa Creu i Santa Pau, U.A.B. CIBERER and ERN-NMD, Barcelona, Spain; Department of Neurology (Y.W.), Affiliated Hospital of Jining Medical University, Shandong Province, China; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Clinical and Research Institute, Milan University, Rozzano, Italy; Nuffield Department of Clinical Neurosciences (S.R.), University of Oxford and Oxford University Hospitals NHS Foundation Trust, UK; Department of Neurosciences, Ophthalmology, Rehabilitation, Genetics and Maternal Sciences (A.S.), University of Genova; IRCCS San Martino Hospital (A.S.), Genova, Italy; Department of Neurology (J.P.), Hospital Clínico de Santiago, Santiago de Compostela (A Coruña), Spain; Department of Neurology (F.H.V.), Franciscus Vlietland Hospital (location: Franciscus Gasthuis), Rotterdam, the Netherlands; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (V.G.), Montefiore Medical Centre, Bronx, NY; Department of Neurology (G. Cavaletti), University Milano-Bicocca, Monza, Italy; Department of Neurology (G.G.-G.), Hospital Universitario Infanta Sofía, San Sebastián de los Reyes, Spain; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, Buenos Aires, Argentina; Department of Neurology (L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (H.D.K.), University Health Network, University of Toronto, Canada; Department of Neurology (E.D.), University Hospital of Larissa, Greece; Department of Neurology, Reference Centre for NMD (S.A.), CHU Timone, Marseille, France; Department of Neurology (A.J.v.d.K., F.E.), Amsterdam University Medical Centre, University of Amsterdam, Neuroscience Institute, Netherlands Neuromuscular Centre, Euro-NMD; Department of Neurology (P.W.W.), Haga Hospital, Den Haag; Department of Neurology (H.J.G.), Reinier de Graaf Hospital, Delft, the Netherlands; Department of Neurology (R.D.M.H.), King's College Hospital, London; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, UK; Department of Neurology (K.A.S.), University of Texas Health Science Centre at Houston; Department of Neurology (S. Karafiath), University of Utah School of Medicine, Salt Lake City; Department of Neurology (M.V.), Lahey Hospital and Medical Center, Tufts University School of Medicine, Burlington, MA; Department of Neurology (G.A.), Mental Health and Sensory Organs (NESMOS), University of Rome 'Sapienza,' Sant'Andrea Hospital, Rome, Italy; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Canada; Department of Neurology (C.G.F.), Maastricht University Medical Centre, the Netherlands; Department of Neurology (M.B.), Leeds Teaching Hospitals; Department of Neurology (R.C.R.), Addenbrooke's Hospital, Cambridge, UK; Department of Neurology (N.J.S.), University at Buffalo Jacobs School of Medicine and Biomedical Sciences, NY; Department of Neurology (R.F.), Scientific Institute San Raffaele, Milan, Italy; Department of Neurology (G.W.v.D.), Canisius Wilhelmina Hospital, Nijmegen; Department of Neurology (M.P.J.G.), Jeroen Bosch Hospital, 's-Hertogenbosch; Department of Neurology (C.S.M.S.), Leiden University Medical Centre, the Netherlands; and Department of Neurology (K.C.G.), St. Elizabeth's Medical Centre, Tufts University, School of Medicine, Boston, MA.; Gijsbers CJ; From the Departments of Neurology (A.Y.D., C.W., B.v.d.B., C.V., J.R., S.E.L., K.K., B.C.J.), Public Health (H.F.L.), and Immunology (B.C.J.), Erasmus MC, University Medical Centre Rotterdam; Department of Neurology (C.W., J.P.A.S.), Maasstad Hospital, Rotterdam, the Netherlands; Laboratory of Gut-Brain Signaling (B.I., N.P., Z.I.), Laboratory Sciences and Services Division, Dhaka, Bangladesh; Department of Neurology (A.D., G. Chavada, H.J.W.), College of Medical, Veterinary and Life Sciences, University of Glasgow, UK; Department of Neurology (Y.Y., S. Kusunoki), Kindai University Faculty of Medicine, Osaka-Sayama City, Osaka, Japan; Department of Neurology (M.M.D.), University of Kansas Medical Center, Kansas City; Department of Neurology (W.W., N.K.), University of Vermont Medical Centre, Burlington; National Institute of Neurosciences and Hospital (Q.D.M.), Agargoan, Bangladesh; Department of Neurology (T.H.), Aarhus University Hospital; Department of Neurology (S.H.S.), Odense University Hospital and University of Southern Denmark, Odense, Denmark; Department of Neurology, Neuromuscular Unit (C.C.), Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Department of Neurology (K.B.), Groote Schuur Hospital, University of Cape Town, South Africa; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle, UK; Department of Neurology (B.v.d.B., C.J.G.), Franciscus Vlietland Hospital, Schiedam, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (S. Kuwabara), Chiba University, Japan; Department of Neurology (P.V.d.B.), Neuromuscular Reference Centre, University Hospital Saint-Luc, University of Louvain, Brussels, Belgium; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Dysimmune Neuropathies Unit, Department of Systems Medicine (G.A.M.), Tor Vergata University Hospital, Rome, Italy; Department of Medicine (N.S.), University of Malaya, Kuala Lumpur; Department of Neurology (G.G.), University Hospital of Modena, Italy; Department of Clinical Neurophysiology, Reference Centre for NMD (Y.P.), CHU Nantes, France; Department of Neurology (J.B.), Saarland University Medical School, Homburg-Saarland (previous affiliation); MVZ Pfalzklinikum (J.B.), Kusel, Germany (current affiliation); Department of Neurology (K.K., R.P.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (C.M.), Hospital Británico, Buenos Aires, Argentina; Department of Neurology (M.J.S.T.), Hospital Marques de Valdecilla, Santander; Department of Neurology (L.Q., I.I.), Hospital de la Santa Creu i Santa Pau, U.A.B. CIBERER and ERN-NMD, Barcelona, Spain; Department of Neurology (Y.W.), Affiliated Hospital of Jining Medical University, Shandong Province, China; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Clinical and Research Institute, Milan University, Rozzano, Italy; Nuffield Department of Clinical Neurosciences (S.R.), University of Oxford and Oxford University Hospitals NHS Foundation Trust, UK; Department of Neurosciences, Ophthalmology, Rehabilitation, Genetics and Maternal Sciences (A.S.), University of Genova; IRCCS San Martino Hospital (A.S.), Genova, Italy; Department of Neurology (J.P.), Hospital Clínico de Santiago, Santiago de Compostela (A Coruña), Spain; Department of Neurology (F.H.V.), Franciscus Vlietland Hospital (location: Franciscus Gasthuis), Rotterdam, the Netherlands; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (V.G.), Montefiore Medical Centre, Bronx, NY; Department of Neurology (G. Cavaletti), University Milano-Bicocca, Monza, Italy; Department of Neurology (G.G.-G.), Hospital Universitario Infanta Sofía, San Sebastián de los Reyes, Spain; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, Buenos Aires, Argentina; Department of Neurology (L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (H.D.K.), University Health Network, University of Toronto, Canada; Department of Neurology (E.D.), University Hospital of Larissa, Greece; Department of Neurology, Reference Centre for NMD (S.A.), CHU Timone, Marseille, France; Department of Neurology (A.J.v.d.K., F.E.), Amsterdam University Medical Centre, University of Amsterdam, Neuroscience Institute, Netherlands Neuromuscular Centre, Euro-NMD; Department of Neurology (P.W.W.), Haga Hospital, Den Haag; Department of Neurology (H.J.G.), Reinier de Graaf Hospital, Delft, the Netherlands; Department of Neurology (R.D.M.H.), King's College Hospital, London; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, UK; Department of Neurology (K.A.S.), University of Texas Health Science Centre at Houston; Department of Neurology (S. Karafiath), University of Utah School of Medicine, Salt Lake City; Department of Neurology (M.V.), Lahey Hospital and Medical Center, Tufts University School of Medicine, Burlington, MA; Department of Neurology (G.A.), Mental Health and Sensory Organs (NESMOS), University of Rome 'Sapienza,' Sant'Andrea Hospital, Rome, Italy; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Canada; Department of Neurology (C.G.F.), Maastricht University Medical Centre, the Netherlands; Department of Neurology (M.B.), Leeds Teaching Hospitals; Department of Neurology (R.C.R.), Addenbrooke's Hospital, Cambridge, UK; Department of Neurology (N.J.S.), University at Buffalo Jacobs School of Medicine and Biomedical Sciences, NY; Department of Neurology (R.F.), Scientific Institute San Raffaele, Milan, Italy; Department of Neurology (G.W.v.D.), Canisius Wilhelmina Hospital, Nijmegen; Department of Neurology (M.P.J.G.), Jeroen Bosch Hospital, 's-Hertogenbosch; Department of Neurology (C.S.M.S.), Leiden University Medical Centre, the Netherlands; and Department of Neurology (K.C.G.), St. Elizabeth's Medical Centre, Tufts University, School of Medicine, Boston, MA.; Busby M; From the Departments of Neurology (A.Y.D., C.W., B.v.d.B., C.V., J.R., S.E.L., K.K., B.C.J.), Public Health (H.F.L.), and Immunology (B.C.J.), Erasmus MC, University Medical Centre Rotterdam; Department of Neurology (C.W., J.P.A.S.), Maasstad Hospital, Rotterdam, the Netherlands; Laboratory of Gut-Brain Signaling (B.I., N.P., Z.I.), Laboratory Sciences and Services Division, Dhaka, Bangladesh; Department of Neurology (A.D., G. Chavada, H.J.W.), College of Medical, Veterinary and Life Sciences, University of Glasgow, UK; Department of Neurology (Y.Y., S. Kusunoki), Kindai University Faculty of Medicine, Osaka-Sayama City, Osaka, Japan; Department of Neurology (M.M.D.), University of Kansas Medical Center, Kansas City; Department of Neurology (W.W., N.K.), University of Vermont Medical Centre, Burlington; National Institute of Neurosciences and Hospital (Q.D.M.), Agargoan, Bangladesh; Department of Neurology (T.H.), Aarhus University Hospital; Department of Neurology (S.H.S.), Odense University Hospital and University of Southern Denmark, Odense, Denmark; Department of Neurology, Neuromuscular Unit (C.C.), Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Department of Neurology (K.B.), Groote Schuur Hospital, University of Cape Town, South Africa; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle, UK; Department of Neurology (B.v.d.B., C.J.G.), Franciscus Vlietland Hospital, Schiedam, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (S. Kuwabara), Chiba University, Japan; Department of Neurology (P.V.d.B.), Neuromuscular Reference Centre, University Hospital Saint-Luc, University of Louvain, Brussels, Belgium; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Dysimmune Neuropathies Unit, Department of Systems Medicine (G.A.M.), Tor Vergata University Hospital, Rome, Italy; Department of Medicine (N.S.), University of Malaya, Kuala Lumpur; Department of Neurology (G.G.), University Hospital of Modena, Italy; Department of Clinical Neurophysiology, Reference Centre for NMD (Y.P.), CHU Nantes, France; Department of Neurology (J.B.), Saarland University Medical School, Homburg-Saarland (previous affiliation); MVZ Pfalzklinikum (J.B.), Kusel, Germany (current affiliation); Department of Neurology (K.K., R.P.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (C.M.), Hospital Británico, Buenos Aires, Argentina; Department of Neurology (M.J.S.T.), Hospital Marques de Valdecilla, Santander; Department of Neurology (L.Q., I.I.), Hospital de la Santa Creu i Santa Pau, U.A.B. CIBERER and ERN-NMD, Barcelona, Spain; Department of Neurology (Y.W.), Affiliated Hospital of Jining Medical University, Shandong Province, China; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Clinical and Research Institute, Milan University, Rozzano, Italy; Nuffield Department of Clinical Neurosciences (S.R.), University of Oxford and Oxford University Hospitals NHS Foundation Trust, UK; Department of Neurosciences, Ophthalmology, Rehabilitation, Genetics and Maternal Sciences (A.S.), University of Genova; IRCCS San Martino Hospital (A.S.), Genova, Italy; Department of Neurology (J.P.), Hospital Clínico de Santiago, Santiago de Compostela (A Coruña), Spain; Department of Neurology (F.H.V.), Franciscus Vlietland Hospital (location: Franciscus Gasthuis), Rotterdam, the Netherlands; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (V.G.), Montefiore Medical Centre, Bronx, NY; Department of Neurology (G. Cavaletti), University Milano-Bicocca, Monza, Italy; Department of Neurology (G.G.-G.), Hospital Universitario Infanta Sofía, San Sebastián de los Reyes, Spain; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, Buenos Aires, Argentina; Department of Neurology (L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (H.D.K.), University Health Network, University of Toronto, Canada; Department of Neurology (E.D.), University Hospital of Larissa, Greece; Department of Neurology, Reference Centre for NMD (S.A.), CHU Timone, Marseille, France; Department of Neurology (A.J.v.d.K., F.E.), Amsterdam University Medical Centre, University of Amsterdam, Neuroscience Institute, Netherlands Neuromuscular Centre, Euro-NMD; Department of Neurology (P.W.W.), Haga Hospital, Den Haag; Department of Neurology (H.J.G.), Reinier de Graaf Hospital, Delft, the Netherlands; Department of Neurology (R.D.M.H.), King's College Hospital, London; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, UK; Department of Neurology (K.A.S.), University of Texas Health Science Centre at Houston; Department of Neurology (S. Karafiath), University of Utah School of Medicine, Salt Lake City; Department of Neurology (M.V.), Lahey Hospital and Medical Center, Tufts University School of Medicine, Burlington, MA; Department of Neurology (G.A.), Mental Health and Sensory Organs (NESMOS), University of Rome 'Sapienza,' Sant'Andrea Hospital, Rome, Italy; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Canada; Department of Neurology (C.G.F.), Maastricht University Medical Centre, the Netherlands; Department of Neurology (M.B.), Leeds Teaching Hospitals; Department of Neurology (R.C.R.), Addenbrooke's Hospital, Cambridge, UK; Department of Neurology (N.J.S.), University at Buffalo Jacobs School of Medicine and Biomedical Sciences, NY; Department of Neurology (R.F.), Scientific Institute San Raffaele, Milan, Italy; Department of Neurology (G.W.v.D.), Canisius Wilhelmina Hospital, Nijmegen; Department of Neurology (M.P.J.G.), Jeroen Bosch Hospital, 's-Hertogenbosch; Department of Neurology (C.S.M.S.), Leiden University Medical Centre, the Netherlands; and Department of Neurology (K.C.G.), St. Elizabeth's Medical Centre, Tufts University, School of Medicine, Boston, MA.; Roberts RC; From the Departments of Neurology (A.Y.D., C.W., B.v.d.B., C.V., J.R., S.E.L., K.K., B.C.J.), Public Health (H.F.L.), and Immunology (B.C.J.), Erasmus MC, University Medical Centre Rotterdam; Department of Neurology (C.W., J.P.A.S.), Maasstad Hospital, Rotterdam, the Netherlands; Laboratory of Gut-Brain Signaling (B.I., N.P., Z.I.), Laboratory Sciences and Services Division, Dhaka, Bangladesh; Department of Neurology (A.D., G. Chavada, H.J.W.), College of Medical, Veterinary and Life Sciences, University of Glasgow, UK; Department of Neurology (Y.Y., S. Kusunoki), Kindai University Faculty of Medicine, Osaka-Sayama City, Osaka, Japan; Department of Neurology (M.M.D.), University of Kansas Medical Center, Kansas City; Department of Neurology (W.W., N.K.), University of Vermont Medical Centre, Burlington; National Institute of Neurosciences and Hospital (Q.D.M.), Agargoan, Bangladesh; Department of Neurology (T.H.), Aarhus University Hospital; Department of Neurology (S.H.S.), Odense University Hospital and University of Southern Denmark, Odense, Denmark; Department of Neurology, Neuromuscular Unit (C.C.), Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Department of Neurology (K.B.), Groote Schuur Hospital, University of Cape Town, South Africa; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle, UK; Department of Neurology (B.v.d.B., C.J.G.), Franciscus Vlietland Hospital, Schiedam, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (S. Kuwabara), Chiba University, Japan; Department of Neurology (P.V.d.B.), Neuromuscular Reference Centre, University Hospital Saint-Luc, University of Louvain, Brussels, Belgium; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Dysimmune Neuropathies Unit, Department of Systems Medicine (G.A.M.), Tor Vergata University Hospital, Rome, Italy; Department of Medicine (N.S.), University of Malaya, Kuala Lumpur; Department of Neurology (G.G.), University Hospital of Modena, Italy; Department of Clinical Neurophysiology, Reference Centre for NMD (Y.P.), CHU Nantes, France; Department of Neurology (J.B.), Saarland University Medical School, Homburg-Saarland (previous affiliation); MVZ Pfalzklinikum (J.B.), Kusel, Germany (current affiliation); Department of Neurology (K.K., R.P.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (C.M.), Hospital Británico, Buenos Aires, Argentina; Department of Neurology (M.J.S.T.), Hospital Marques de Valdecilla, Santander; Department of Neurology (L.Q., I.I.), Hospital de la Santa Creu i Santa Pau, U.A.B. CIBERER and ERN-NMD, Barcelona, Spain; Department of Neurology (Y.W.), Affiliated Hospital of Jining Medical University, Shandong Province, China; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Clinical and Research Institute, Milan University, Rozzano, Italy; Nuffield Department of Clinical Neurosciences (S.R.), University of Oxford and Oxford University Hospitals NHS Foundation Trust, UK; Department of Neurosciences, Ophthalmology, Rehabilitation, Genetics and Maternal Sciences (A.S.), University of Genova; IRCCS San Martino Hospital (A.S.), Genova, Italy; Department of Neurology (J.P.), Hospital Clínico de Santiago, Santiago de Compostela (A Coruña), Spain; Department of Neurology (F.H.V.), Franciscus Vlietland Hospital (location: Franciscus Gasthuis), Rotterdam, the Netherlands; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (V.G.), Montefiore Medical Centre, Bronx, NY; Department of Neurology (G. Cavaletti), University Milano-Bicocca, Monza, Italy; Department of Neurology (G.G.-G.), Hospital Universitario Infanta Sofía, San Sebastián de los Reyes, Spain; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, Buenos Aires, Argentina; Department of Neurology (L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (H.D.K.), University Health Network, University of Toronto, Canada; Department of Neurology (E.D.), University Hospital of Larissa, Greece; Department of Neurology, Reference Centre for NMD (S.A.), CHU Timone, Marseille, France; Department of Neurology (A.J.v.d.K., F.E.), Amsterdam University Medical Centre, University of Amsterdam, Neuroscience Institute, Netherlands Neuromuscular Centre, Euro-NMD; Department of Neurology (P.W.W.), Haga Hospital, Den Haag; Department of Neurology (H.J.G.), Reinier de Graaf Hospital, Delft, the Netherlands; Department of Neurology (R.D.M.H.), King's College Hospital, London; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, UK; Department of Neurology (K.A.S.), University of Texas Health Science Centre at Houston; Department of Neurology (S. Karafiath), University of Utah School of Medicine, Salt Lake City; Department of Neurology (M.V.), Lahey Hospital and Medical Center, Tufts University School of Medicine, Burlington, MA; Department of Neurology (G.A.), Mental Health and Sensory Organs (NESMOS), University of Rome 'Sapienza,' Sant'Andrea Hospital, Rome, Italy; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Canada; Department of Neurology (C.G.F.), Maastricht University Medical Centre, the Netherlands; Department of Neurology (M.B.), Leeds Teaching Hospitals; Department of Neurology (R.C.R.), Addenbrooke's Hospital, Cambridge, UK; Department of Neurology (N.J.S.), University at Buffalo Jacobs School of Medicine and Biomedical Sciences, NY; Department of Neurology (R.F.), Scientific Institute San Raffaele, Milan, Italy; Department of Neurology (G.W.v.D.), Canisius Wilhelmina Hospital, Nijmegen; Department of Neurology (M.P.J.G.), Jeroen Bosch Hospital, 's-Hertogenbosch; Department of Neurology (C.S.M.S.), Leiden University Medical Centre, the Netherlands; and Department of Neurology (K.C.G.), St. Elizabeth's Medical Centre, Tufts University, School of Medicine, Boston, MA.; Silvestri NJ; From the Departments of Neurology (A.Y.D., C.W., B.v.d.B., C.V., J.R., S.E.L., K.K., B.C.J.), Public Health (H.F.L.), and Immunology (B.C.J.), Erasmus MC, University Medical Centre Rotterdam; Department of Neurology (C.W., J.P.A.S.), Maasstad Hospital, Rotterdam, the Netherlands; Laboratory of Gut-Brain Signaling (B.I., N.P., Z.I.), Laboratory Sciences and Services Division, Dhaka, Bangladesh; Department of Neurology (A.D., G. Chavada, H.J.W.), College of Medical, Veterinary and Life Sciences, University of Glasgow, UK; Department of Neurology (Y.Y., S. Kusunoki), Kindai University Faculty of Medicine, Osaka-Sayama City, Osaka, Japan; Department of Neurology (M.M.D.), University of Kansas Medical Center, Kansas City; Department of Neurology (W.W., N.K.), University of Vermont Medical Centre, Burlington; National Institute of Neurosciences and Hospital (Q.D.M.), Agargoan, Bangladesh; Department of Neurology (T.H.), Aarhus University Hospital; Department of Neurology (S.H.S.), Odense University Hospital and University of Southern Denmark, Odense, Denmark; Department of Neurology, Neuromuscular Unit (C.C.), Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Department of Neurology (K.B.), Groote Schuur Hospital, University of Cape Town, South Africa; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle, UK; Department of Neurology (B.v.d.B., C.J.G.), Franciscus Vlietland Hospital, Schiedam, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (S. Kuwabara), Chiba University, Japan; Department of Neurology (P.V.d.B.), Neuromuscular Reference Centre, University Hospital Saint-Luc, University of Louvain, Brussels, Belgium; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Dysimmune Neuropathies Unit, Department of Systems Medicine (G.A.M.), Tor Vergata University Hospital, Rome, Italy; Department of Medicine (N.S.), University of Malaya, Kuala Lumpur; Department of Neurology (G.G.), University Hospital of Modena, Italy; Department of Clinical Neurophysiology, Reference Centre for NMD (Y.P.), CHU Nantes, France; Department of Neurology (J.B.), Saarland University Medical School, Homburg-Saarland (previous affiliation); MVZ Pfalzklinikum (J.B.), Kusel, Germany (current affiliation); Department of Neurology (K.K., R.P.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (C.M.), Hospital Británico, Buenos Aires, Argentina; Department of Neurology (M.J.S.T.), Hospital Marques de Valdecilla, Santander; Department of Neurology (L.Q., I.I.), Hospital de la Santa Creu i Santa Pau, U.A.B. CIBERER and ERN-NMD, Barcelona, Spain; Department of Neurology (Y.W.), Affiliated Hospital of Jining Medical University, Shandong Province, China; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Clinical and Research Institute, Milan University, Rozzano, Italy; Nuffield Department of Clinical Neurosciences (S.R.), University of Oxford and Oxford University Hospitals NHS Foundation Trust, UK; Department of Neurosciences, Ophthalmology, Rehabilitation, Genetics and Maternal Sciences (A.S.), University of Genova; IRCCS San Martino Hospital (A.S.), Genova, Italy; Department of Neurology (J.P.), Hospital Clínico de Santiago, Santiago de Compostela (A Coruña), Spain; Department of Neurology (F.H.V.), Franciscus Vlietland Hospital (location: Franciscus Gasthuis), Rotterdam, the Netherlands; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (V.G.), Montefiore Medical Centre, Bronx, NY; Department of Neurology (G. Cavaletti), University Milano-Bicocca, Monza, Italy; Department of Neurology (G.G.-G.), Hospital Universitario Infanta Sofía, San Sebastián de los Reyes, Spain; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, Buenos Aires, Argentina; Department of Neurology (L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (H.D.K.), University Health Network, University of Toronto, Canada; Department of Neurology (E.D.), University Hospital of Larissa, Greece; Department of Neurology, Reference Centre for NMD (S.A.), CHU Timone, Marseille, France; Department of Neurology (A.J.v.d.K., F.E.), Amsterdam University Medical Centre, University of Amsterdam, Neuroscience Institute, Netherlands Neuromuscular Centre, Euro-NMD; Department of Neurology (P.W.W.), Haga Hospital, Den Haag; Department of Neurology (H.J.G.), Reinier de Graaf Hospital, Delft, the Netherlands; Department of Neurology (R.D.M.H.), King's College Hospital, London; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, UK; Department of Neurology (K.A.S.), University of Texas Health Science Centre at Houston; Department of Neurology (S. Karafiath), University of Utah School of Medicine, Salt Lake City; Department of Neurology (M.V.), Lahey Hospital and Medical Center, Tufts University School of Medicine, Burlington, MA; Department of Neurology (G.A.), Mental Health and Sensory Organs (NESMOS), University of Rome 'Sapienza,' Sant'Andrea Hospital, Rome, Italy; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Canada; Department of Neurology (C.G.F.), Maastricht University Medical Centre, the Netherlands; Department of Neurology (M.B.), Leeds Teaching Hospitals; Department of Neurology (R.C.R.), Addenbrooke's Hospital, Cambridge, UK; Department of Neurology (N.J.S.), University at Buffalo Jacobs School of Medicine and Biomedical Sciences, NY; Department of Neurology (R.F.), Scientific Institute San Raffaele, Milan, Italy; Department of Neurology (G.W.v.D.), Canisius Wilhelmina Hospital, Nijmegen; Department of Neurology (M.P.J.G.), Jeroen Bosch Hospital, 's-Hertogenbosch; Department of Neurology (C.S.M.S.), Leiden University Medical Centre, the Netherlands; and Department of Neurology (K.C.G.), St. Elizabeth's Medical Centre, Tufts University, School of Medicine, Boston, MA.; Fazio R; From the Departments of Neurology (A.Y.D., C.W., B.v.d.B., C.V., J.R., S.E.L., K.K., B.C.J.), Public Health (H.F.L.), and Immunology (B.C.J.), Erasmus MC, University Medical Centre Rotterdam; Department of Neurology (C.W., J.P.A.S.), Maasstad Hospital, Rotterdam, the Netherlands; Laboratory of Gut-Brain Signaling (B.I., N.P., Z.I.), Laboratory Sciences and Services Division, Dhaka, Bangladesh; Department of Neurology (A.D., G. Chavada, H.J.W.), College of Medical, Veterinary and Life Sciences, University of Glasgow, UK; Department of Neurology (Y.Y., S. Kusunoki), Kindai University Faculty of Medicine, Osaka-Sayama City, Osaka, Japan; Department of Neurology (M.M.D.), University of Kansas Medical Center, Kansas City; Department of Neurology (W.W., N.K.), University of Vermont Medical Centre, Burlington; National Institute of Neurosciences and Hospital (Q.D.M.), Agargoan, Bangladesh; Department of Neurology (T.H.), Aarhus University Hospital; Department of Neurology (S.H.S.), Odense University Hospital and University of Southern Denmark, Odense, Denmark; Department of Neurology, Neuromuscular Unit (C.C.), Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Department of Neurology (K.B.), Groote Schuur Hospital, University of Cape Town, South Africa; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle, UK; Department of Neurology (B.v.d.B., C.J.G.), Franciscus Vlietland Hospital, Schiedam, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (S. Kuwabara), Chiba University, Japan; Department of Neurology (P.V.d.B.), Neuromuscular Reference Centre, University Hospital Saint-Luc, University of Louvain, Brussels, Belgium; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Dysimmune Neuropathies Unit, Department of Systems Medicine (G.A.M.), Tor Vergata University Hospital, Rome, Italy; Department of Medicine (N.S.), University of Malaya, Kuala Lumpur; Department of Neurology (G.G.), University Hospital of Modena, Italy; Department of Clinical Neurophysiology, Reference Centre for NMD (Y.P.), CHU Nantes, France; Department of Neurology (J.B.), Saarland University Medical School, Homburg-Saarland (previous affiliation); MVZ Pfalzklinikum (J.B.), Kusel, Germany (current affiliation); Department of Neurology (K.K., R.P.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (C.M.), Hospital Británico, Buenos Aires, Argentina; Department of Neurology (M.J.S.T.), Hospital Marques de Valdecilla, Santander; Department of Neurology (L.Q., I.I.), Hospital de la Santa Creu i Santa Pau, U.A.B. CIBERER and ERN-NMD, Barcelona, Spain; Department of Neurology (Y.W.), Affiliated Hospital of Jining Medical University, Shandong Province, China; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Clinical and Research Institute, Milan University, Rozzano, Italy; Nuffield Department of Clinical Neurosciences (S.R.), University of Oxford and Oxford University Hospitals NHS Foundation Trust, UK; Department of Neurosciences, Ophthalmology, Rehabilitation, Genetics and Maternal Sciences (A.S.), University of Genova; IRCCS San Martino Hospital (A.S.), Genova, Italy; Department of Neurology (J.P.), Hospital Clínico de Santiago, Santiago de Compostela (A Coruña), Spain; Department of Neurology (F.H.V.), Franciscus Vlietland Hospital (location: Franciscus Gasthuis), Rotterdam, the Netherlands; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (V.G.), Montefiore Medical Centre, Bronx, NY; Department of Neurology (G. Cavaletti), University Milano-Bicocca, Monza, Italy; Department of Neurology (G.G.-G.), Hospital Universitario Infanta Sofía, San Sebastián de los Reyes, Spain; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, Buenos Aires, Argentina; Department of Neurology (L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (H.D.K.), University Health Network, University of Toronto, Canada; Department of Neurology (E.D.), University Hospital of Larissa, Greece; Department of Neurology, Reference Centre for NMD (S.A.), CHU Timone, Marseille, France; Department of Neurology (A.J.v.d.K., F.E.), Amsterdam University Medical Centre, University of Amsterdam, Neuroscience Institute, Netherlands Neuromuscular Centre, Euro-NMD; Department of Neurology (P.W.W.), Haga Hospital, Den Haag; Department of Neurology (H.J.G.), Reinier de Graaf Hospital, Delft, the Netherlands; Department of Neurology (R.D.M.H.), King's College Hospital, London; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, UK; Department of Neurology (K.A.S.), University of Texas Health Science Centre at Houston; Department of Neurology (S. Karafiath), University of Utah School of Medicine, Salt Lake City; Department of Neurology (M.V.), Lahey Hospital and Medical Center, Tufts University School of Medicine, Burlington, MA; Department of Neurology (G.A.), Mental Health and Sensory Organs (NESMOS), University of Rome 'Sapienza,' Sant'Andrea Hospital, Rome, Italy; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Canada; Department of Neurology (C.G.F.), Maastricht University Medical Centre, the Netherlands; Department of Neurology (M.B.), Leeds Teaching Hospitals; Department of Neurology (R.C.R.), Addenbrooke's Hospital, Cambridge, UK; Department of Neurology (N.J.S.), University at Buffalo Jacobs School of Medicine and Biomedical Sciences, NY; Department of Neurology (R.F.), Scientific Institute San Raffaele, Milan, Italy; Department of Neurology (G.W.v.D.), Canisius Wilhelmina Hospital, Nijmegen; Department of Neurology (M.P.J.G.), Jeroen Bosch Hospital, 's-Hertogenbosch; Department of Neurology (C.S.M.S.), Leiden University Medical Centre, the Netherlands; and Department of Neurology (K.C.G.), St. Elizabeth's Medical Centre, Tufts University, School of Medicine, Boston, MA.; van Dijk GW; From the Departments of Neurology (A.Y.D., C.W., B.v.d.B., C.V., J.R., S.E.L., K.K., B.C.J.), Public Health (H.F.L.), and Immunology (B.C.J.), Erasmus MC, University Medical Centre Rotterdam; Department of Neurology (C.W., J.P.A.S.), Maasstad Hospital, Rotterdam, the Netherlands; Laboratory of Gut-Brain Signaling (B.I., N.P., Z.I.), Laboratory Sciences and Services Division, Dhaka, Bangladesh; Department of Neurology (A.D., G. Chavada, H.J.W.), College of Medical, Veterinary and Life Sciences, University of Glasgow, UK; Department of Neurology (Y.Y., S. Kusunoki), Kindai University Faculty of Medicine, Osaka-Sayama City, Osaka, Japan; Department of Neurology (M.M.D.), University of Kansas Medical Center, Kansas City; Department of Neurology (W.W., N.K.), University of Vermont Medical Centre, Burlington; National Institute of Neurosciences and Hospital (Q.D.M.), Agargoan, Bangladesh; Department of Neurology (T.H.), Aarhus University Hospital; Department of Neurology (S.H.S.), Odense University Hospital and University of Southern Denmark, Odense, Denmark; Department of Neurology, Neuromuscular Unit (C.C.), Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Department of Neurology (K.B.), Groote Schuur Hospital, University of Cape Town, South Africa; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle, UK; Department of Neurology (B.v.d.B., C.J.G.), Franciscus Vlietland Hospital, Schiedam, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (S. Kuwabara), Chiba University, Japan; Department of Neurology (P.V.d.B.), Neuromuscular Reference Centre, University Hospital Saint-Luc, University of Louvain, Brussels, Belgium; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Dysimmune Neuropathies Unit, Department of Systems Medicine (G.A.M.), Tor Vergata University Hospital, Rome, Italy; Department of Medicine (N.S.), University of Malaya, Kuala Lumpur; Department of Neurology (G.G.), University Hospital of Modena, Italy; Department of Clinical Neurophysiology, Reference Centre for NMD (Y.P.), CHU Nantes, France; Department of Neurology (J.B.), Saarland University Medical School, Homburg-Saarland (previous affiliation); MVZ Pfalzklinikum (J.B.), Kusel, Germany (current affiliation); Department of Neurology (K.K., R.P.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (C.M.), Hospital Británico, Buenos Aires, Argentina; Department of Neurology (M.J.S.T.), Hospital Marques de Valdecilla, Santander; Department of Neurology (L.Q., I.I.), Hospital de la Santa Creu i Santa Pau, U.A.B. CIBERER and ERN-NMD, Barcelona, Spain; Department of Neurology (Y.W.), Affiliated Hospital of Jining Medical University, Shandong Province, China; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Clinical and Research Institute, Milan University, Rozzano, Italy; Nuffield Department of Clinical Neurosciences (S.R.), University of Oxford and Oxford University Hospitals NHS Foundation Trust, UK; Department of Neurosciences, Ophthalmology, Rehabilitation, Genetics and Maternal Sciences (A.S.), University of Genova; IRCCS San Martino Hospital (A.S.), Genova, Italy; Department of Neurology (J.P.), Hospital Clínico de Santiago, Santiago de Compostela (A Coruña), Spain; Department of Neurology (F.H.V.), Franciscus Vlietland Hospital (location: Franciscus Gasthuis), Rotterdam, the Netherlands; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (V.G.), Montefiore Medical Centre, Bronx, NY; Department of Neurology (G. Cavaletti), University Milano-Bicocca, Monza, Italy; Department of Neurology (G.G.-G.), Hospital Universitario Infanta Sofía, San Sebastián de los Reyes, Spain; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, Buenos Aires, Argentina; Department of Neurology (L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (H.D.K.), University Health Network, University of Toronto, Canada; Department of Neurology (E.D.), University Hospital of Larissa, Greece; Department of Neurology, Reference Centre for NMD (S.A.), CHU Timone, Marseille, France; Department of Neurology (A.J.v.d.K., F.E.), Amsterdam University Medical Centre, University of Amsterdam, Neuroscience Institute, Netherlands Neuromuscular Centre, Euro-NMD; Department of Neurology (P.W.W.), Haga Hospital, Den Haag; Department of Neurology (H.J.G.), Reinier de Graaf Hospital, Delft, the Netherlands; Department of Neurology (R.D.M.H.), King's College Hospital, London; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, UK; Department of Neurology (K.A.S.), University of Texas Health Science Centre at Houston; Department of Neurology (S. Karafiath), University of Utah School of Medicine, Salt Lake City; Department of Neurology (M.V.), Lahey Hospital and Medical Center, Tufts University School of Medicine, Burlington, MA; Department of Neurology (G.A.), Mental Health and Sensory Organs (NESMOS), University of Rome 'Sapienza,' Sant'Andrea Hospital, Rome, Italy; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Canada; Department of Neurology (C.G.F.), Maastricht University Medical Centre, the Netherlands; Department of Neurology (M.B.), Leeds Teaching Hospitals; Department of Neurology (R.C.R.), Addenbrooke's Hospital, Cambridge, UK; Department of Neurology (N.J.S.), University at Buffalo Jacobs School of Medicine and Biomedical Sciences, NY; Department of Neurology (R.F.), Scientific Institute San Raffaele, Milan, Italy; Department of Neurology (G.W.v.D.), Canisius Wilhelmina Hospital, Nijmegen; Department of Neurology (M.P.J.G.), Jeroen Bosch Hospital, 's-Hertogenbosch; Department of Neurology (C.S.M.S.), Leiden University Medical Centre, the Netherlands; and Department of Neurology (K.C.G.), St. Elizabeth's Medical Centre, Tufts University, School of Medicine, Boston, MA.; Garssen MPJ; From the Departments of Neurology (A.Y.D., C.W., B.v.d.B., C.V., J.R., S.E.L., K.K., B.C.J.), Public Health (H.F.L.), and Immunology (B.C.J.), Erasmus MC, University Medical Centre Rotterdam; Department of Neurology (C.W., J.P.A.S.), Maasstad Hospital, Rotterdam, the Netherlands; Laboratory of Gut-Brain Signaling (B.I., N.P., Z.I.), Laboratory Sciences and Services Division, Dhaka, Bangladesh; Department of Neurology (A.D., G. Chavada, H.J.W.), College of Medical, Veterinary and Life Sciences, University of Glasgow, UK; Department of Neurology (Y.Y., S. Kusunoki), Kindai University Faculty of Medicine, Osaka-Sayama City, Osaka, Japan; Department of Neurology (M.M.D.), University of Kansas Medical Center, Kansas City; Department of Neurology (W.W., N.K.), University of Vermont Medical Centre, Burlington; National Institute of Neurosciences and Hospital (Q.D.M.), Agargoan, Bangladesh; Department of Neurology (T.H.), Aarhus University Hospital; Department of Neurology (S.H.S.), Odense University Hospital and University of Southern Denmark, Odense, Denmark; Department of Neurology, Neuromuscular Unit (C.C.), Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Department of Neurology (K.B.), Groote Schuur Hospital, University of Cape Town, South Africa; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle, UK; Department of Neurology (B.v.d.B., C.J.G.), Franciscus Vlietland Hospital, Schiedam, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (S. Kuwabara), Chiba University, Japan; Department of Neurology (P.V.d.B.), Neuromuscular Reference Centre, University Hospital Saint-Luc, University of Louvain, Brussels, Belgium; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Dysimmune Neuropathies Unit, Department of Systems Medicine (G.A.M.), Tor Vergata University Hospital, Rome, Italy; Department of Medicine (N.S.), University of Malaya, Kuala Lumpur; Department of Neurology (G.G.), University Hospital of Modena, Italy; Department of Clinical Neurophysiology, Reference Centre for NMD (Y.P.), CHU Nantes, France; Department of Neurology (J.B.), Saarland University Medical School, Homburg-Saarland (previous affiliation); MVZ Pfalzklinikum (J.B.), Kusel, Germany (current affiliation); Department of Neurology (K.K., R.P.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (C.M.), Hospital Británico, Buenos Aires, Argentina; Department of Neurology (M.J.S.T.), Hospital Marques de Valdecilla, Santander; Department of Neurology (L.Q., I.I.), Hospital de la Santa Creu i Santa Pau, U.A.B. CIBERER and ERN-NMD, Barcelona, Spain; Department of Neurology (Y.W.), Affiliated Hospital of Jining Medical University, Shandong Province, China; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Clinical and Research Institute, Milan University, Rozzano, Italy; Nuffield Department of Clinical Neurosciences (S.R.), University of Oxford and Oxford University Hospitals NHS Foundation Trust, UK; Department of Neurosciences, Ophthalmology, Rehabilitation, Genetics and Maternal Sciences (A.S.), University of Genova; IRCCS San Martino Hospital (A.S.), Genova, Italy; Department of Neurology (J.P.), Hospital Clínico de Santiago, Santiago de Compostela (A Coruña), Spain; Department of Neurology (F.H.V.), Franciscus Vlietland Hospital (location: Franciscus Gasthuis), Rotterdam, the Netherlands; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (V.G.), Montefiore Medical Centre, Bronx, NY; Department of Neurology (G. Cavaletti), University Milano-Bicocca, Monza, Italy; Department of Neurology (G.G.-G.), Hospital Universitario Infanta Sofía, San Sebastián de los Reyes, Spain; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, Buenos Aires, Argentina; Department of Neurology (L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (H.D.K.), University Health Network, University of Toronto, Canada; Department of Neurology (E.D.), University Hospital of Larissa, Greece; Department of Neurology, Reference Centre for NMD (S.A.), CHU Timone, Marseille, France; Department of Neurology (A.J.v.d.K., F.E.), Amsterdam University Medical Centre, University of Amsterdam, Neuroscience Institute, Netherlands Neuromuscular Centre, Euro-NMD; Department of Neurology (P.W.W.), Haga Hospital, Den Haag; Department of Neurology (H.J.G.), Reinier de Graaf Hospital, Delft, the Netherlands; Department of Neurology (R.D.M.H.), King's College Hospital, London; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, UK; Department of Neurology (K.A.S.), University of Texas Health Science Centre at Houston; Department of Neurology (S. Karafiath), University of Utah School of Medicine, Salt Lake City; Department of Neurology (M.V.), Lahey Hospital and Medical Center, Tufts University School of Medicine, Burlington, MA; Department of Neurology (G.A.), Mental Health and Sensory Organs (NESMOS), University of Rome 'Sapienza,' Sant'Andrea Hospital, Rome, Italy; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Canada; Department of Neurology (C.G.F.), Maastricht University Medical Centre, the Netherlands; Department of Neurology (M.B.), Leeds Teaching Hospitals; Department of Neurology (R.C.R.), Addenbrooke's Hospital, Cambridge, UK; Department of Neurology (N.J.S.), University at Buffalo Jacobs School of Medicine and Biomedical Sciences, NY; Department of Neurology (R.F.), Scientific Institute San Raffaele, Milan, Italy; Department of Neurology (G.W.v.D.), Canisius Wilhelmina Hospital, Nijmegen; Department of Neurology (M.P.J.G.), Jeroen Bosch Hospital, 's-Hertogenbosch; Department of Neurology (C.S.M.S.), Leiden University Medical Centre, the Netherlands; and Department of Neurology (K.C.G.), St. Elizabeth's Medical Centre, Tufts University, School of Medicine, Boston, MA.; Straathof CSM; From the Departments of Neurology (A.Y.D., C.W., B.v.d.B., C.V., J.R., S.E.L., K.K., B.C.J.), Public Health (H.F.L.), and Immunology (B.C.J.), Erasmus MC, University Medical Centre Rotterdam; Department of Neurology (C.W., J.P.A.S.), Maasstad Hospital, Rotterdam, the Netherlands; Laboratory of Gut-Brain Signaling (B.I., N.P., Z.I.), Laboratory Sciences and Services Division, Dhaka, Bangladesh; Department of Neurology (A.D., G. Chavada, H.J.W.), College of Medical, Veterinary and Life Sciences, University of Glasgow, UK; Department of Neurology (Y.Y., S. Kusunoki), Kindai University Faculty of Medicine, Osaka-Sayama City, Osaka, Japan; Department of Neurology (M.M.D.), University of Kansas Medical Center, Kansas City; Department of Neurology (W.W., N.K.), University of Vermont Medical Centre, Burlington; National Institute of Neurosciences and Hospital (Q.D.M.), Agargoan, Bangladesh; Department of Neurology (T.H.), Aarhus University Hospital; Department of Neurology (S.H.S.), Odense University Hospital and University of Southern Denmark, Odense, Denmark; Department of Neurology, Neuromuscular Unit (C.C.), Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Department of Neurology (K.B.), Groote Schuur Hospital, University of Cape Town, South Africa; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle, UK; Department of Neurology (B.v.d.B., C.J.G.), Franciscus Vlietland Hospital, Schiedam, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (S. Kuwabara), Chiba University, Japan; Department of Neurology (P.V.d.B.), Neuromuscular Reference Centre, University Hospital Saint-Luc, University of Louvain, Brussels, Belgium; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Dysimmune Neuropathies Unit, Department of Systems Medicine (G.A.M.), Tor Vergata University Hospital, Rome, Italy; Department of Medicine (N.S.), University of Malaya, Kuala Lumpur; Department of Neurology (G.G.), University Hospital of Modena, Italy; Department of Clinical Neurophysiology, Reference Centre for NMD (Y.P.), CHU Nantes, France; Department of Neurology (J.B.), Saarland University Medical School, Homburg-Saarland (previous affiliation); MVZ Pfalzklinikum (J.B.), Kusel, Germany (current affiliation); Department of Neurology (K.K., R.P.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (C.M.), Hospital Británico, Buenos Aires, Argentina; Department of Neurology (M.J.S.T.), Hospital Marques de Valdecilla, Santander; Department of Neurology (L.Q., I.I.), Hospital de la Santa Creu i Santa Pau, U.A.B. CIBERER and ERN-NMD, Barcelona, Spain; Department of Neurology (Y.W.), Affiliated Hospital of Jining Medical University, Shandong Province, China; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Clinical and Research Institute, Milan University, Rozzano, Italy; Nuffield Department of Clinical Neurosciences (S.R.), University of Oxford and Oxford University Hospitals NHS Foundation Trust, UK; Department of Neurosciences, Ophthalmology, Rehabilitation, Genetics and Maternal Sciences (A.S.), University of Genova; IRCCS San Martino Hospital (A.S.), Genova, Italy; Department of Neurology (J.P.), Hospital Clínico de Santiago, Santiago de Compostela (A Coruña), Spain; Department of Neurology (F.H.V.), Franciscus Vlietland Hospital (location: Franciscus Gasthuis), Rotterdam, the Netherlands; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (V.G.), Montefiore Medical Centre, Bronx, NY; Department of Neurology (G. Cavaletti), University Milano-Bicocca, Monza, Italy; Department of Neurology (G.G.-G.), Hospital Universitario Infanta Sofía, San Sebastián de los Reyes, Spain; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, Buenos Aires, Argentina; Department of Neurology (L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (H.D.K.), University Health Network, University of Toronto, Canada; Department of Neurology (E.D.), University Hospital of Larissa, Greece; Department of Neurology, Reference Centre for NMD (S.A.), CHU Timone, Marseille, France; Department of Neurology (A.J.v.d.K., F.E.), Amsterdam University Medical Centre, University of Amsterdam, Neuroscience Institute, Netherlands Neuromuscular Centre, Euro-NMD; Department of Neurology (P.W.W.), Haga Hospital, Den Haag; Department of Neurology (H.J.G.), Reinier de Graaf Hospital, Delft, the Netherlands; Department of Neurology (R.D.M.H.), King's College Hospital, London; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, UK; Department of Neurology (K.A.S.), University of Texas Health Science Centre at Houston; Department of Neurology (S. Karafiath), University of Utah School of Medicine, Salt Lake City; Department of Neurology (M.V.), Lahey Hospital and Medical Center, Tufts University School of Medicine, Burlington, MA; Department of Neurology (G.A.), Mental Health and Sensory Organs (NESMOS), University of Rome 'Sapienza,' Sant'Andrea Hospital, Rome, Italy; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Canada; Department of Neurology (C.G.F.), Maastricht University Medical Centre, the Netherlands; Department of Neurology (M.B.), Leeds Teaching Hospitals; Department of Neurology (R.C.R.), Addenbrooke's Hospital, Cambridge, UK; Department of Neurology (N.J.S.), University at Buffalo Jacobs School of Medicine and Biomedical Sciences, NY; Department of Neurology (R.F.), Scientific Institute San Raffaele, Milan, Italy; Department of Neurology (G.W.v.D.), Canisius Wilhelmina Hospital, Nijmegen; Department of Neurology (M.P.J.G.), Jeroen Bosch Hospital, 's-Hertogenbosch; Department of Neurology (C.S.M.S.), Leiden University Medical Centre, the Netherlands; and Department of Neurology (K.C.G.), St. Elizabeth's Medical Centre, Tufts University, School of Medicine, Boston, MA.; Gorson KC; From the Departments of Neurology (A.Y.D., C.W., B.v.d.B., C.V., J.R., S.E.L., K.K., B.C.J.), Public Health (H.F.L.), and Immunology (B.C.J.), Erasmus MC, University Medical Centre Rotterdam; Department of Neurology (C.W., J.P.A.S.), Maasstad Hospital, Rotterdam, the Netherlands; Laboratory of Gut-Brain Signaling (B.I., N.P., Z.I.), Laboratory Sciences and Services Division, Dhaka, Bangladesh; Department of Neurology (A.D., G. Chavada, H.J.W.), College of Medical, Veterinary and Life Sciences, University of Glasgow, UK; Department of Neurology (Y.Y., S. Kusunoki), Kindai University Faculty of Medicine, Osaka-Sayama City, Osaka, Japan; Department of Neurology (M.M.D.), University of Kansas Medical Center, Kansas City; Department of Neurology (W.W., N.K.), University of Vermont Medical Centre, Burlington; National Institute of Neurosciences and Hospital (Q.D.M.), Agargoan, Bangladesh; Department of Neurology (T.H.), Aarhus University Hospital; Department of Neurology (S.H.S.), Odense University Hospital and University of Southern Denmark, Odense, Denmark; Department of Neurology, Neuromuscular Unit (C.C.), Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Department of Neurology (K.B.), Groote Schuur Hospital, University of Cape Town, South Africa; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle, UK; Department of Neurology (B.v.d.B., C.J.G.), Franciscus Vlietland Hospital, Schiedam, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (S. Kuwabara), Chiba University, Japan; Department of Neurology (P.V.d.B.), Neuromuscular Reference Centre, University Hospital Saint-Luc, University of Louvain, Brussels, Belgium; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Dysimmune Neuropathies Unit, Department of Systems Medicine (G.A.M.), Tor Vergata University Hospital, Rome, Italy; Department of Medicine (N.S.), University of Malaya, Kuala Lumpur; Department of Neurology (G.G.), University Hospital of Modena, Italy; Department of Clinical Neurophysiology, Reference Centre for NMD (Y.P.), CHU Nantes, France; Department of Neurology (J.B.), Saarland University Medical School, Homburg-Saarland (previous affiliation); MVZ Pfalzklinikum (J.B.), Kusel, Germany (current affiliation); Department of Neurology (K.K., R.P.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (C.M.), Hospital Británico, Buenos Aires, Argentina; Department of Neurology (M.J.S.T.), Hospital Marques de Valdecilla, Santander; Department of Neurology (L.Q., I.I.), Hospital de la Santa Creu i Santa Pau, U.A.B. CIBERER and ERN-NMD, Barcelona, Spain; Department of Neurology (Y.W.), Affiliated Hospital of Jining Medical University, Shandong Province, China; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Clinical and Research Institute, Milan University, Rozzano, Italy; Nuffield Department of Clinical Neurosciences (S.R.), University of Oxford and Oxford University Hospitals NHS Foundation Trust, UK; Department of Neurosciences, Ophthalmology, Rehabilitation, Genetics and Maternal Sciences (A.S.), University of Genova; IRCCS San Martino Hospital (A.S.), Genova, Italy; Department of Neurology (J.P.), Hospital Clínico de Santiago, Santiago de Compostela (A Coruña), Spain; Department of Neurology (F.H.V.), Franciscus Vlietland Hospital (location: Franciscus Gasthuis), Rotterdam, the Netherlands; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (V.G.), Montefiore Medical Centre, Bronx, NY; Department of Neurology (G. Cavaletti), University Milano-Bicocca, Monza, Italy; Department of Neurology (G.G.-G.), Hospital Universitario Infanta Sofía, San Sebastián de los Reyes, Spain; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, Buenos Aires, Argentina; Department of Neurology (L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (H.D.K.), University Health Network, University of Toronto, Canada; Department of Neurology (E.D.), University Hospital of Larissa, Greece; Department of Neurology, Reference Centre for NMD (S.A.), CHU Timone, Marseille, France; Department of Neurology (A.J.v.d.K., F.E.), Amsterdam University Medical Centre, University of Amsterdam, Neuroscience Institute, Netherlands Neuromuscular Centre, Euro-NMD; Department of Neurology (P.W.W.), Haga Hospital, Den Haag; Department of Neurology (H.J.G.), Reinier de Graaf Hospital, Delft, the Netherlands; Department of Neurology (R.D.M.H.), King's College Hospital, London; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, UK; Department of Neurology (K.A.S.), University of Texas Health Science Centre at Houston; Department of Neurology (S. Karafiath), University of Utah School of Medicine, Salt Lake City; Department of Neurology (M.V.), Lahey Hospital and Medical Center, Tufts University School of Medicine, Burlington, MA; Department of Neurology (G.A.), Mental Health and Sensory Organs (NESMOS), University of Rome 'Sapienza,' Sant'Andrea Hospital, Rome, Italy; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Canada; Department of Neurology (C.G.F.), Maastricht University Medical Centre, the Netherlands; Department of Neurology (M.B.), Leeds Teaching Hospitals; Department of Neurology (R.C.R.), Addenbrooke's Hospital, Cambridge, UK; Department of Neurology (N.J.S.), University at Buffalo Jacobs School of Medicine and Biomedical Sciences, NY; Department of Neurology (R.F.), Scientific Institute San Raffaele, Milan, Italy; Department of Neurology (G.W.v.D.), Canisius Wilhelmina Hospital, Nijmegen; Department of Neurology (M.P.J.G.), Jeroen Bosch Hospital, 's-Hertogenbosch; Department of Neurology (C.S.M.S.), Leiden University Medical Centre, the Netherlands; and Department of Neurology (K.C.G.), St. Elizabeth's Medical Centre, Tufts University, School of Medicine, Boston, MA.; Jacobs BC; From the Departments of Neurology (A.Y.D., C.W., B.v.d.B., C.V., J.R., S.E.L., K.K., B.C.J.), Public Health (H.F.L.), and Immunology (B.C.J.), Erasmus MC, University Medical Centre Rotterdam; Department of Neurology (C.W., J.P.A.S.), Maasstad Hospital, Rotterdam, the Netherlands; Laboratory of Gut-Brain Signaling (B.I., N.P., Z.I.), Laboratory Sciences and Services Division, Dhaka, Bangladesh; Department of Neurology (A.D., G. Chavada, H.J.W.), College of Medical, Veterinary and Life Sciences, University of Glasgow, UK; Department of Neurology (Y.Y., S. Kusunoki), Kindai University Faculty of Medicine, Osaka-Sayama City, Osaka, Japan; Department of Neurology (M.M.D.), University of Kansas Medical Center, Kansas City; Department of Neurology (W.W., N.K.), University of Vermont Medical Centre, Burlington; National Institute of Neurosciences and Hospital (Q.D.M.), Agargoan, Bangladesh; Department of Neurology (T.H.), Aarhus University Hospital; Department of Neurology (S.H.S.), Odense University Hospital and University of Southern Denmark, Odense, Denmark; Department of Neurology, Neuromuscular Unit (C.C.), Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Department of Neurology (K.B.), Groote Schuur Hospital, University of Cape Town, South Africa; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle, UK; Department of Neurology (B.v.d.B., C.J.G.), Franciscus Vlietland Hospital, Schiedam, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (S. Kuwabara), Chiba University, Japan; Department of Neurology (P.V.d.B.), Neuromuscular Reference Centre, University Hospital Saint-Luc, University of Louvain, Brussels, Belgium; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Dysimmune Neuropathies Unit, Department of Systems Medicine (G.A.M.), Tor Vergata University Hospital, Rome, Italy; Department of Medicine (N.S.), University of Malaya, Kuala Lumpur; Department of Neurology (G.G.), University Hospital of Modena, Italy; Department of Clinical Neurophysiology, Reference Centre for NMD (Y.P.), CHU Nantes, France; Department of Neurology (J.B.), Saarland University Medical School, Homburg-Saarland (previous affiliation); MVZ Pfalzklinikum (J.B.), Kusel, Germany (current affiliation); Department of Neurology (K.K., R.P.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (C.M.), Hospital Británico, Buenos Aires, Argentina; Department of Neurology (M.J.S.T.), Hospital Marques de Valdecilla, Santander; Department of Neurology (L.Q., I.I.), Hospital de la Santa Creu i Santa Pau, U.A.B. CIBERER and ERN-NMD, Barcelona, Spain; Department of Neurology (Y.W.), Affiliated Hospital of Jining Medical University, Shandong Province, China; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Clinical and Research Institute, Milan University, Rozzano, Italy; Nuffield Department of Clinical Neurosciences (S.R.), University of Oxford and Oxford University Hospitals NHS Foundation Trust, UK; Department of Neurosciences, Ophthalmology, Rehabilitation, Genetics and Maternal Sciences (A.S.), University of Genova; IRCCS San Martino Hospital (A.S.), Genova, Italy; Department of Neurology (J.P.), Hospital Clínico de Santiago, Santiago de Compostela (A Coruña), Spain; Department of Neurology (F.H.V.), Franciscus Vlietland Hospital (location: Franciscus Gasthuis), Rotterdam, the Netherlands; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (V.G.), Montefiore Medical Centre, Bronx, NY; Department of Neurology (G. Cavaletti), University Milano-Bicocca, Monza, Italy; Department of Neurology (G.G.-G.), Hospital Universitario Infanta Sofía, San Sebastián de los Reyes, Spain; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, Buenos Aires, Argentina; Department of Neurology (L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (H.D.K.), University Health Network, University of Toronto, Canada; Department of Neurology (E.D.), University Hospital of Larissa, Greece; Department of Neurology, Reference Centre for NMD (S.A.), CHU Timone, Marseille, France; Department of Neurology (A.J.v.d.K., F.E.), Amsterdam University Medical Centre, University of Amsterdam, Neuroscience Institute, Netherlands Neuromuscular Centre, Euro-NMD; Department of Neurology (P.W.W.), Haga Hospital, Den Haag; Department of Neurology (H.J.G.), Reinier de Graaf Hospital, Delft, the Netherlands; Department of Neurology (R.D.M.H.), King's College Hospital, London; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, UK; Department of Neurology (K.A.S.), University of Texas Health Science Centre at Houston; Department of Neurology (S. Karafiath), University of Utah School of Medicine, Salt Lake City; Department of Neurology (M.V.), Lahey Hospital and Medical Center, Tufts University School of Medicine, Burlington, MA; Department of Neurology (G.A.), Mental Health and Sensory Organs (NESMOS), University of Rome 'Sapienza,' Sant'Andrea Hospital, Rome, Italy; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Canada; Department of Neurology (C.G.F.), Maastricht University Medical Centre, the Netherlands; Department of Neurology (M.B.), Leeds Teaching Hospitals; Department of Neurology (R.C.R.), Addenbrooke's Hospital, Cambridge, UK; Department of Neurology (N.J.S.), University at Buffalo Jacobs School of Medicine and Biomedical Sciences, NY; Department of Neurology (R.F.), Scientific Institute San Raffaele, Milan, Italy; Department of Neurology (G.W.v.D.), Canisius Wilhelmina Hospital, Nijmegen; Department of Neurology (M.P.J.G.), Jeroen Bosch Hospital, 's-Hertogenbosch; Department of Neurology (C.S.M.S.), Leiden University Medical Centre, the Netherlands; and Department of Neurology (K.C.G.), St. Elizabeth's Medical Centre, Tufts University, School of Medicine, Boston, MA. b.jacobs@erasmusmc.nl.

Publisher: Lippincott Williams & Wilkins Country of Publication: United States NLM ID: 0401060 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1526-632X (Electronic) Linking ISSN: 00283878 NLM ISO Abbreviation: Neurology Subsets: MEDLINE