부산대학교 도서관

Robin C M Thomma; Susan K Halstead; Laura C de Koning; Eveline J A Wiegers; Dawn S Gourlay; Anne P Tio-Gillen; Wouter van Rijs; Henning Andersen; Giovanni Antonini; Samuel Arends; Shahram Attarian; Fabio A Barroso; Kathleen J Bateman; Luana Benedetti; Peter Van den Bergh; Jan Bürmann; Mark Busby; Carlos Casasnovas; Efthimios Dardiotis; Amy Davidson; Thomas E Feasby; Janev Fehmi; Giuliana Galassi; Tania Garcia-Sobrino; Volkan Granit; Gerardo Gutiérrez-Gutiérrez; Robert D M Hadden; Thomas Harbo; Hans-Peter Hartung; Imran Hasan; James K L Holt; Zhahirul Islam; Summer Karafiath; Hans D Katzberg; Noah Kolb; Susumu Kusunoki; Satoshi Kuwabara; Motoi Kuwahara; Helmar C Lehmann; Sonja E Leonhard; Lorena Martín-Aguilar; Soledad Monges; Eduardo Nobile-Orazio; Julio Pardo; Yann Pereon; Luis Querol; Ricardo C Reisin; Simon Rinaldi; Paolo Ripellino; Rhys C Roberts; Olivier Scheidegger; Nortina Shahrizaila; Kazim A Sheikh; Nicholas J Silvestri; Soren H Sindrup; Beth Stein; Cheng Y Tan; Hatice Tankisi; Leo H Visser; Waqar Waheed; Ruth Huizinga; Bart C Jacobs; Hugh J Willison; J M Addington; S Ajroud-Driss; H Andersen; G Antonini; S Arends; S Attarian; U A Badrising; C Balducci; F A Barroso; K Bateman; I R Bella; L Benedetti; B van den Berg; P Y K van den Bergh; T E Bertorini; R Bhavaraju-Sanka; F M Bozzano; T H Brannagan; C Briani; J Bürmann; M Busby; S Butterworth; G Capodivento; C Casasnovas; G Cavaletti; C C Chao; S Chen; E Cisneros; K G Claeys; M E Conti; D R Cornblath; J S Cosgrove; M C Dalakas; P van Damme; E Dardiotis; A Davidson; G W van Dijk; M M Dimachkie; A Y Doets; P A van Doorn; A Echaniz-Laguna; F Eftimov; C G Faber; R Fazio; T E Feasby; J Fehmi; J Fernández-Travieso; C Fokke; T Fujioka; E A Fulgenzi; G Galassi; T Garcia-Sobrino; M P J Garssen; C Giannotta; C J Gijsbers; J M Gilchrist; H J Gilhuis; J M Goldstein; K C Gorson; N A Goyal; V Granit; A M Grapperon; G Guttiérrez-Guttiérrez; L Gutman; R D M Hadden; T Harbo; H P Hartung; S Hayat; R A Hendriks; Jakob V Holbech; J K L Holt; S T Hsieh; M Htut; R A C Hughes; R Huizinga; A M Humm; T Hundsberger; B Islam; Z Islam; B C Jacobs; I Jahan; K Jellema; I Jericó Pascual; K Kaida; S Karafiath; H D Katzberg; H Kerkhoff; M A Khoshnoodi; L Kiers; N Kokubun; N A Kolb; L C de Koning; R van Koningsveld; A J van der Kooi; J C H M Kramers; K Kuitwaard; T Kuntzer; S Kusunoki; S Kuwabara; J Y Kwan; S S Ladha; L Landschoff Lassen; A M Lascano; V Lawson; H C Lehmann; S E Leonhard; C Lleixa-Rodriguez; L W G Luijten; M P T Lunn; A Magot; H Manji; C Marchesoni; G A Marfia; C Márquez Infante; L Martín-Aguilar; E Martinez Hernandez; G Mataluni; M Mattiazi; C J McDermott; G D Meekins; J A L Miller; Q D Mohammad; M S Monges; M Morales de la Prida; G Morís de la Tassa; P Nair; C Nascimbene; L Nobbio; E Nobile-Orazio; R J Nowak; M Osei-Bonsu; J Pardo; F Pelouto; Y Péréon; M T Pulley; L Querol; S W Reddel; T van der Ree; R C Reisin; S Rinaldi; P Ripellino; R C Roberts; I Rojas-Marcos; J Roodbol; S A Rudnicki; G M Sachs; J P A Samijn; L Santoro; A Savransky; O Scheidegger; A Schenone; L Schwindling; M J Sedano Tous; N Shahrizaila; K A Sheikh; N J Silvestri; S H Sindrup; V Siokas; C L Sommer; B Stein; A M Stino; T Suichi; H Tankisi; R C M Thomma; P Tsouni; P Twydell; J D Varrato; J C Verboon; C Verhamme; F H Vermeij; J Verschuuren; L H Visser; M V Vytopil; W Waheed; C Walgaard; Y Z Wang; E J A Wiegers; H J Willison; P W Wirtz; M van Woerkom; Y Yamagishi; K Yoshikawa; L L Zhang; L Zhou; S A Zivkovic

IGOS Consortium 2025, 'Large-scale profiling of antibody reactivity to glycolipids in patients with Guillain-Barré syndrome', Brain : a journal of neurology. https://doi.org/10.1093/brain/awaf102

E. Fonseca Pérez; J. Cabrera Maqueda; V. Fernández; R. Ruiz García; L. Naranjo; G. Álvarez Bravo; M. Sedano Tous; G. Olivé Cirera; M. Martí; B. Sebastián Torres; B. Venegas Pérez; S. Silvarrey Rodríguez; C. Izquierdo García; R. Velasco Fargas; E. Morales; J. Gállego Pérez de Larraya; M. Ruiz Palomino; M. Ros Segura; C. Calles Hernández; M. Massot Cladera; M. Ruiz Ortiz; C. Sánchez; M. Riverol Fernández; A. Lázaro Romero; G. Torres Iglesias; M. Sepúlveda; T. Armangué; A. Saiz Hinarejos; J. Dalmau; F. Graus; E. Martínez Hernández

Neurology Perspectives, Vol 4, Iss , Pp 52- (2024)

R. Collet Vidiella; L. Martín Aguilar; C. Lleixà Rodríguez; M. Caballero Ávila; C. Tejada Illa; E. Pascual Goñi; P. Llarch Cegarra; L. Llucià Carol; A. Vesperinas Castro; A. Carbayo Viejo; E. Gallardo Vigo; L. Llansó Caldentey; M. Sedano Tous; C. Casasnovas; G. Gutiérrez Gutiérrez; J. Pardo Fernández; I. Fernández Cadenas; L. Querol Gutiérrez

Neurology Perspectives, Vol 4, Iss , Pp 71- (2024)

Addington, J.M.; Ajroud-Driss, S.; Andersen, H.; Antonini, G.; Attarian, S.; Badrising, U.A.; Balloy, G.; Barroso, F.A.; Bateman, K.; Bella, I.R.; Benedetti, L.; van den Bergh, P.; Bertorini, T.E.; Bhavaraju-Sanka, R.; Bianco, M.; Brannagan, T.H.; Briani, C.; Buerrmann; Busby, M.; Butterworth, S.; Casasnovas, C.; Cavaletti, G.; Chao, C.C.; Chavada, G.; Chen, S.; Claeys, K.G.; Conti, M.E.; Cornblath, D.R.; Cosgrove, J.S.; Dalakas, M.C.; van Damme, P.; Dardiotis, E.; Davidson, A.; Derejko, M.A.; van Dijk, G.W.; Dimachkie, M.M.; van Doorn, P.A.; Dornonville de la Cour, C.; Echaniz-Laguna, A.; Eftimov, F.; Faber, C.G.; Fazio, R.; Feasby, T.E.; Fokke, C.; Fujioka, T.; Fulgenzi, E.A.; Galassi, G.; Garcia-Sobrino, T.; Garssen, M.P.J.; Gijsbers, C.J.; Gilchrist, J.M.; Gilhuis, H.J.; Goldstein, J.M.; Gorson, K.C.; Goyal, N.A.; Granit, V.; Grisanti, S.T.E.; Gutiérrez-Gutiérrez; Gutmann, L.; Hadden, R.D.M.; Harbo, T.; Hartung, H.P.; Holbech, J.V.; Holt, J.K.L.; Hsieh, S.T.; Htut, M.; Hughes, R.A.C.; Illa, I.; Islam, B.; Islam, Z.; Jacobs, B.C.; Fehmi, J.; Jellema, K.; Jerico Pascual, I.; Kaida, K.; Karafiath, S.; Katzberg, H.D.; Khoshnoodi, M.A.; Kiers, L.; Kimpinski, K.; Kleyweg, R.P.; Kokubun, N.; Kolb, N.A.; van Koningsveld, R.; van der Kooi, A.J.; Kramers, J.C.H.M.; Kuitwaard, K.; Kusunoki, S.; Kuwabara, S.; Kwan, J.Y.; Ladha, S.S.; Landschoff Lassen, L.; Lawson, V.; Lehmann, H.C.; Lee Pan, E.; Lunn, M.P.T.; Manji, H.; Marfia, G.A.; Márquez Infante, C.; Martin-Aguilar, L.; Martinez Hernandez, E.; Mataluni, G.; Mattiazi, M.; McDermott, C.J.; Meekins, G.D.; Miller, J.A.L.; Mohammad, Q.D.; Monges, M.S.; Moris de la Tassa, G.; Nascimbene, C.; Navacerrada-Barrero, F.J.; Nobile-Orazio, E.; Nowak, R.J.; Orizaola, P.J.; Osei-Bonsu, M.; Pardal, A.M.; Pardo, J.; Pascuzzi, R.M.; Péréon, Y.; Pulley, M.T.; Querol, L.; Reddel, S.W.; van der Ree, T.; Reisin, R.C.; Rinaldi, S.; Roberts, R.C.; Rojas-Marcos, I.; Rudnicki; Sachs, G.M.; Samijn, J.P.A.; Santoro, L.; Schenone, A.; Sedano Tous, M.J.; Shahrizaila, N.; Sheikh, K.A.; Silvestri, N.J.; Sindrup, S.H.; Sommer, C.L.; Stein, B.; Song, Y.; Stino, A.M.; Tankisi, H.; Tannemaat, M.R.; Twydell, P.; Vélez-Santamaria, P.V.; Varrato, J.D.; Vermeij, F.H.; Visser, L.H.; Vytopil, M.V.; Waheed, W.; Walgaard, C.; Wang, Y.Z.; Willison, H.J.; Wirtz, P.W.; Yamagishi, Y.; Zhou, L.; Zivkovic, S.A.; Arends, Samuel ; Drenthen, Judith ; van den Bergh, Peter ; Franssen, Hessel ; Hadden, Robert D.M. ; Islam, Badrul ; Kuwabara, Satoshi ; Reisin, Ricardo C. ; Shahrizaila, Nortina ; Amino, Hiroshi ; Antonini, Giovanni ; Attarian, Shahram ; Balducci, Claudia ; Barroso, Fabio ; Bertorini, Tulio ; Binda, Davide ; Brannagan, Thomas H. ; Buermann, Jan ; Casasnovas, Carlos ; Cavaletti, Guido ; Chao, Chi-Chao ; Dimachkie, Mazen M. ; Fulgenzi, Ernesto A. ; Galassi, Giuliana ; Gutiérrez Gutiérrez, Gerardo ; Harbo, Thomas ; Hartung, Hans-Peter ; Hsieh, Sung-Tsang ; Kiers, Lynette ; Lehmann, Helmar C. ; Manganelli, Fiore ; Marfia, Girolama A. ; Mataluni, Giorgia ; Pardo, Julio ; Péréon, Yann ; Rajabally, Yusuf A. ; Santoro, Lucio ; Sekiguchi, Yukari ; Stein, Beth ; Stettner, Mark ; Uncini, Antonino ; Verboon, Christine ; Verhamme, Camiel ; Vytopil, Michal ; Waheed, Waqar ; Wang, Min ; Zivkovic, Sasha ; Jacobs, Bart C. ; Cornblath, David R.

In Clinical Neurophysiology June 2022 138:231-240

Doets A. Y.; Walgaard C.; Lingsma H. F.; Islam B.; Papri N.; Yamagishi Y.; Kusunoki S.; Dimachkie M. M.; Waheed W.; Kolb N.; Gorson K. C.; Jacobs B. C.; Islam Z.; Mohammad Q. D.; Harbo T.; Sindrup S. H.; Chavada G.; Davidson A.; Willison H. J.; Casasnovas C.; Bateman K.; Miller J. A. L.; van Doorn P. A.; van den Berg B.; Verboon C.; Roodbol J.; Leonhard S. E.; Arends S.; Luijten L.; Benedetti L.; Kuwabara S.; den Bergh P. V.; Monges S.; Marfia G. A.; Shahrizaila N.; Galassi G.; Pereon Y.; Burmann J.; Kuitwaard K.; Kleyweg R. P.; Marchesoni C.; Sedano Tous M. J.; Querol L.; Wang Y.; Nobile-Orazio E.; Rinaldi S.; Schenone A.; Pardo J.; Vermeij F. H.; Lehmann H. C.; Granit V.; Cavaletti G.; Gutierrez-Gutierrez G.; Barroso F. A.; Visser L. H.; Katzberg H. D.; Dardiotis E.; Attarian S.; van der Kooi A. J.; Eftimov F.; Wirtz P. W.; Samijn J. P. A.; Gilhuis H. J.; Hadden R. D. M.; Holt J. K. L.; Sheikh K. A.; Karafiath S.; Vytopil M.; Antonini G.; Feasby T. E.; Faber C. G.; Kramers J. C. H. M.; Busby M.; Roberts R. C.; Silvestri N. J.; Fazio R.; van Dijk G. W.; Garssen M. P. J.; Verschuuren J. G. G. M.; Hughes R. A. C.; Cornblath D. R.; Hartung H. P.; de Koning L. C.; van Woerkom M.; Mandarakas M.; Reisin R. C.; Reddel S. W.; Ripellino P.; Hsieh S. T.; Addington J. M.; Ajroud-Driss S.; Andersen H.; Badrising U. A.; Bella I. R.; Bertorini T. E.; Bhavaraju-Sanka R.; Bianco M.; Brand P.; Brannagan T. H.; Briani C.; Butterworth S.; Chao C. C.; Chen S.; Claeys K. G.; Conti M. E.; Cosgrove J. S.; Dalakas M. C.; Derejko M. A.; de la Coeur C. D.; Echaniz-Laguna A.; Fokke C.; Fujioka T.; Fulgenzi E. A.; Garcia-Sobrino T.; Gilchrist J. M.; Goldstein J. M.; Goyal N. A.; Grimbergen Y. A. M.; Grisanti S.; Gutmann L.; Illa I.; Holbech J. V.; Htut M.; Jellema K.; Pascual I. J.; Jimeno-Montero M. C.; Kaida K.; Khoshnoodi M.; Kimpinski K.; Kuwahara M.; Kiers L.; Kokubun N.; Kwan J. Y.; Ladha S. S.; Lassen L. L.; Lawson V.; Pan E. L.; Lunn M. P. T.; Magot A.; Manji H.; Infante C. M.; Martin-Aguilar L.; Hernandez E. M.; Mataluni G.; Mattiazzi M. G.; McDermott C. J.; Meekins G. D.; de la Tassa G. M.; Mozzoni J.; Nascimbene C.; Nedkova V.; Nowak R. J.; Balaguer P. O.; Osei-Bonsu M.; Pascuzzi R. M.; Prada V.; Pulley M. T.; Rojas-Marcos I.; Rudnicki S. A.; Sachs G. M.; Samukawa M.; Santoro L.; Schwindling L.; Sekiguchi Y.; Sommer C. L.; Song Y.; Stein B.; Stino A. M.; Tan C. -Y.; Tankisi H.; Twydell P. T.; van Damme P.; van der Ree T.; van Koningsveld R.; Varrato J. D.; Zhou L.; Zivkovic S.

Ann Neurol
Doets, A Y, Walgaard, C, Lingsma, H F, Islam, B, Papri, N, Yamagishi, Y, Kusunoki, S, Dimachkie, M M, Waheed, W, Kolb, N, Gorson, K C, Jacobs, B C & IGOS Consortium 2022, 'International Validation of the Erasmus Guillain-Barré Syndrome Respiratory Insufficiency Score', Annals of Neurology, vol. 91, no. 4, pp. 521-531. https://doi.org/10.1002/ana.26312

Verboon C.; Harbo T.; Cornblath D. R.; Hughes R. A. C.; Van Doorn P. A.; Lunn M. P.; Gorson K. C.; Barroso F.; Kuwabara S.; Galassi G.; Lehmann H. C.; Kusunoki S.; Reisin R. C.; Binda D.; Cavaletti G.; Jacobs B. C. H. Andersen; PhD (Aarhus University Hospital; Aarhus Denmark); S. Attarian; PhD (CHU Timone; Marseille France); U. A. Badrising; PhD (Leiden University Medical Centre; Leiden; The Netherlands); K. Bateman; PhD (Groote Schuur Hospital; Cape Town; South-Africa); L. Benedetti; PhD (Ospedale Sant’ Andrea La Spezia; La Spezia; Italy); B. van den Berg; MD (Franciscus Gasthuis; Rotterdam; P. Van den Bergh; PhD (University Clinic St. Luc; Leuven Belgium); T. E. Bertorini; MD (The University of Tennessee Health Science Center (UTHSC); Memphis USA); R. Bhavaraju-Sanka; MD (University Hospital/ University of Texas Health Science Center; San Antonio Texas; USA); M. Bianco (Milan University; Humanitas Clinicala and Research Institute Milan; C. Briani; MD (University of Padova; Padova Italy); J. Bürmann; MD (Universitätsklinikum des Saarlandes; Homburg Germany); C. Casasnovas; PhD (Bellvitge University Hospital - IDIBELL Neurometabolic Diseases Group. CIBERER; Barcelona Spain); C. C. Chao; PhD (National Taiwan University Hospital; Taipei Taiwan); G. Chavada; PhD (Glasgow University; Glasgow UK); K. G. Claeys; PhD (1. University Hospitals Leuven; Leuven Belgium; 2. KU Leuven; J. S. Cosgrove; MD (Leeds General Infirmary; Leeds UK); M. C. Dalakas; MD (1. Thomas Jefferson University; Philadelphia USA; 2. National and Kapodistrian University of Athens; Athens Greece); A. Davidson; MD (University of Glasgow; G. W. van Dijk; MD (Canisius Wilhelmina Hospital; Nijmegen; E. Dardiotis; MD (University of Thessaly; Hospital of Larissa; Larissa Greece); M. Derejko; MD (Odense University Hospital; Odense Denmark); M. M. Dimachkie; MD (University of Kansas Medical Center; Kansas City; C. Dornonville de la Cour; MD (National Hospital Copenhagen; Copenhagen Denmark); A. Echaniz-Laguna; MD (Bicêtre University Hospital; Paris France); F. Eftimov; PhD (Amsterdam University Medical Centre; Amsterdam; C. G. Faber; PhD (Maastricht University Medical Centre; Maastricht; R. Fazio; MD (Scientific Institute San Raffaele; Milan Italy); J. Fehmi (University of Oxford E. A. Fulgenzi; MD (Hospital Cesar Milstein Buenos Aires; Buenos Aires; Argentina); T. García-Sobrino; MD (Hospital Clínico de Santiago; Santiago de Compostela (A Coruña); Spain); C. J. Gijsbers; MD (Vlietland Hospital; Schiedam; V. Granit; MD (Montefiore Medical; Center; New York; S. Grisanti; MD (Ospedale Sant’ Andrea La Spezia; G. Gutiérrez-Gutiérrez; MD (Hospital Universitario Infanta Sofia; San Sebastian; J. V. Holbech; PhD (Odense University Hospital; J. K. L. Holt; PhD; FRCP (The Walton Centre; Liverpool UK); C. Homedes; MD (Bellvitge University Hospital - IDIBELL Neurometabolic Diseases Group. CIBERER; B. Islam; PhD (International Centre for Diarrhoeal Disease Research; Bangladesh (icddr; b) Dhaka; Bangladesh); Z. Islam; I. Jahan; PhD candidate (International Centre for Diarrhoeal Disease Research; I. Jericó Pascual; PhD (Complejo Hospitalario de Navarra; Pamplona Spain); S. Karafiath; MD (University of Utah School of Medicine; Salt Lake City; H. Kerkhoff; PhD (Albert Schweitzer Hospital; Dordrecht; K. Kimpinski; MD (University Hospital; LHSC London-Ontario; Canada); A. Kohler; MD (Instituto de Investigaciones Neurológicas Raúl Carrea; FLENI; N. Kolb; MD (University of Vermont; Burlington VT; K. Kuitwaard; PhD (1. Albert Schweitzer Hospital; 2. Erasmus MC; M. Kuwahara; PhD (Kindai University; Osaka Japan); S. S. Ladha; MD (Barrow Neurology Clinics; Phoenix Arizona; E. Lee Pan; MBChB (Groote Schuur Hospital; G. A. Marfia; MD (Neurological Clinic; Policlinico Tor Vergata; Rome Italy); A. Magot; MD (Reference Centre for NMD; Nantes University Hospital; France); C. Márquez Infante; MD (Hospital Universitario Virgen del Rocio; Seville Spain); L. Martín-Aguilar; MD (Hospital de la Santa Creu i Sant Pau; Universitat Autònoma de Barcelona; E. Martinez Hernandez; MD (Institut d’Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS); Hospital Clinic; G. Mataluni; PhD (Neurological Clinic; G. Meekins; MD (University of Minnesota; J. A. L. Miller; PhD (Royal Victoria Infirmary; Newcastle UK); M. S. Monges; MD (Hospital de Pediatría J. P. Garrahan; E. Nobile Orazio; PhD (Milan University; A. Pardal; MD (Hospital Britanico; J. Pardo Fernandez (Hospital Clínico de Santiago; Y. Péréon; PhD (Reference Centre for NMD; M. Pulley; MD (University of Florida; Jacksonville USA); L. Querol Gutierrez; PhD (Hospital de la Santa Creu i Sant Pau; S. W. Reddel; PhD (Concord Repatriation General Hospital; Sydney Australia); T. van der Ree; MD (Westfriesgasthuis; Hoorn; S. Rinaldi; MBChB; PhD (University of Oxford J. P. A. Samijn; MD (Maasstad Hospital; M. Samukawa; L. Santoro; PhD (University Federico II; Napels Italy); A. Savransky; PhD (Hospital de Pediatría J. P. Garrahan; L. Schwindling; M. J. Sedano Tous; MD (Hospital Universitario Marques de Valdecilla; Santander Cantabria; Y. Sekiguchi; PhD (Chiba University; Chiba Japan); N. Shahrizaila; MD (Neurology Unit; Department of Medicine; Faculty of Medicine; University of Malaya; Malaya); N. J. Silvestri; MD (Buffalo Jacobs School of Medicine S. Sindrup; C. L. Sommer; MD (Universitätsklinikum Würzburg; Würzburg Germany); A. Spyropoulos (Royal Victoria Infirmary; B. Stein; MD (St. Joseph’s Regional Medical Center; Paterson USA); C. Y. Tan; MRCP (Neurology Unit; H. Tankisi; F. Vermeij; M. V. Vytopil; PhD (Tufts University School of Medicine Lahey Hospital P. W. Wirtz; PhD (HagaZiekenhuis; The Hague; W. Waheed; MD (University of Vermont Medical Center; Burlington; USA). Other collaborators were:J. M. Addington; MD (University of Virginia; Charlottesville USA); S. Ajroud-Driss; MD (Northwestern University Feinberg; Chicago USA); G. Antonini; MD (Mental Health and Sensory Organs (NESMOS); Sapienza University; Sant’Andrea Hospital; I. R. Bella; MD (University of Mass Medical School; Worcester USA); T. H. Brannagan; MD (Columbia University; New York City; C. Bunschoten; PhD candidate (Erasmus University Medical Centre; M. Busby; Bradford UK); S. Butterworth; MD (Pinderfields Hospital; Wakefield UK); M. E. Conti; MD (University Hospital Clinicas; S. Chen; PhD (Rutgers; Robert Wood Johnson University Hospital; New Brunswick; A. Doets; the Netherlands); T. E. Feasby; MD (University of Calgary; Calgary Canada); C. Fokke; MD (Gelre Hospital; Zutphen and Apeldoorn; T. Fujioka; MD (Toho University Medical Center; Tokyo Japan); M. P. J. Garssen; PhD (Jeroen Bosch Hospital; ’s Hertogenbosch; J. M. Gilchrist; MD (Soulthern Illinois University School of Medicine; Springfield USA); J. Gilhuis; PhD (Reinier de Graaf Gasthuis; Delft; J. M. Goldstein; MD (Yale University School of Medicine; New Haven; N. A. Goyal; MD (University of California; Irvine USA); R. D. M. Hadden; PhD (King’s College Hospital; London UK); S. T. Hsieh; M. Htut; MD (St. George’s Hospital; I. Illa; K. Jellema; PhD (Haaglanden Medisch Centrum; K. Kaida; PhD (National Defense Medical College; Saitama Japan); H. D. Katzberg; MD (University of Toronto; Toronto Canada); L. Kiers; MD (University of Melbourne; Royal Melbourne Hospital; Parkville Australia); N. Kokubun; MD (Dokkyo Medical University; Tochigi Japan); R. van Koningsveld; PhD (Elkerliek Hospital; Helmond and Deurne; A. J. van der Kooi; J. Y. Kwan; MD (University of Maryland School of Medicine; Baltimore USA); L. Landschoff Lassen; MD (Glostrup Hospital; Glostrup Denmark); V. Lawson; MD (Wexner Medical Center at The Ohio State University; Columbus USA); S. E. Leonhard; M. Mandarakas; PhD (Erasmus University Medical Centre; H. Manji; FRCP (Ipswich Hospital; Ipswich UK); M. G. Mattiazzi; MD (Hospital Militar Central; C. J. McDermott; MD (Royal Hallamshire Hospital; NIHR Clinical; Sheffield UK); Q. D. Mohammad; PhD (National Institute of Neurosciences and Hospital; Dhaka Bangladesh); G. Morís de la Tassa; MD (Hospital UniversitarioCentral de Asturias; Asturias Spain); C. Nascimbene; PhD (Luigi Sacco Hospital; E. H. Niks; R. J. Nowak; M. Osei-Bonsu; PhD (James Cook University Hospital; Middlesbrough UK); R. M. Pascuzzi; MD (University of Indiana School of Medicine; Indianapolis USA); R. C. Roberts; MD (Addenbrooke’s Hospital Cambridge; Cambridge UK); I. Rojas-Marcos; MD (Hospital Univesitario Reina Sofia; Cordoba Spain); J. Roodbol; S. A. Rudnicki; MD (University of Arkansas; Fayetteville USA); G. M. Sachs; MD (University of Rhode Island; Providence USA); A. Schenone; PhD (1. Department of Neurosciences; Rehabilitation Ophthalmology; Genetics and Maternal and Infantile Sciences (DINOGMI); University of Genova; Genova; Italy 2. IRCCS Policlinico San Martino; Genova Italy); K. Sheikh; PhD (The University of Texas Health Science Center at Houston; Houston USA); P. Twydell; DO (Spectrum Health System; Grand Rapids; P. Van Damme; PhD (University Hospital Leuven; J. D. Varrato; DO (Lehigh Valley Health Network; Allentown USA); L. H. Visser; PhD (Elisabeth-TweeSteden Hospital; Tilburg and Waalwijk; H. J. Willison; PhD (University of Glasgow; M. van Woerkom (Erasmus MC; L. Zhou; PhD (Icahn School

J Neurol Neurosurg Psychiatry
JOURNAL OF NEUROLOGY NEUROSURGERY AND PSYCHIATRY
r-IIB SANT PAU. Repositorio Institucional de Producción Científica del Instituto de Investigación Biomédica Sant Pau
Institut d’Investigació Biomèdica Sant Pau (IIB Sant Pau)
instname
Verboon, C, Harbo, T, Cornblath, D R, Hughes, R A C, Van Doorn, P A, Lunn, M P, Gorson, K C, Barroso, F, Kuwabara, S, Galassi, G, Lehmann, H C, Kusunoki, S, Reisin, R C, Binda, D, Cavaletti, G & Jacobs, B C 2021, 'Intravenous immunoglobulin treatment for mild Guillain-Barré syndrome : An international observational study', Journal of Neurology, Neurosurgery & Psychiatry, vol. 92, no. 10, pp. 1080-1088. https://doi.org/10.1136/jnnp-2020-325815

A, Cerveró; A, López-de-Eguileta; Á, Cano-Abascal; M J, Sedano-Tous; M, Drake-Pérez; A, Casado

Archivos de la Sociedad Española de Oftalmología (English Edition). 95:192-195

A, Cerveró; M J, Sedano-Tous; J, Madera; A, López-de-Eguileta; A, Casado

Archivos de la Sociedad Española de Oftalmología (English Edition). 95:146-149

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

Lleixà, Cinta; Martín-Aguilar, Lorena; Pascual-Goñi, Elba; Franco-Leyva, Teresa; Caballero-Ávila, Marta; de Luna Salva, Noemí; Gallardo, Eduard; Suarez-Calvet, Xavier; Martinez-Martinez, Laura; Diaz-Manera, Jordi; Rojas-Garcia, Ricard; Cortés-Vicente, Elena; Turón, Joana; Casasnovas, Carlos; Homedes, C.; Gutiérrez-Gutiérrez, Gerardo; Jimeno-Montero, M. C.; Berciano, José; Sedano-Tous, M. J.; García-Sobrino, Tania; Pardo, Julio; Márquez-Infante, C.; Rojas-Marcos, I.; Jericó-Pascual, Ivonne; Martínez-Hernández, E.; Morís, Germán; Domínguez-González, C.; Juarez, Candido; Illa, Isabel; Querol, Luis; Universitat Autònoma de Barcelona

Verboon C.; Van Den Berg B.; Cornblath D. R.; Venema E.; Gorson K. C.; Lunn M. P.; Lingsma H.; Van Den Bergh P.; Harbo T.; Bateman K.; Pereon Y.; Sindrup So. H.; Kusunoki S.; Miller J.; Islam Z.; Hartung H. -P.; Chavada G.; Jacobs B. C.; Hughes R. A. C.; Van Doorn P. A. J. M. Addington; MD (University of Virginia; Charlottesville USA); S. Consortia. Protected by copyright. on October 7; 2019 at Uppsala Universitet BIBSAM http://jnnp. bmj. com/ J Neurol Neurosurg Psychiatry: first published as 10. 1136/jnnp-2019-321496 on 5 October 2019. Downloaded from 8 Verboon C; et al. J Neurol Neurosurg Psychiatry 2019; 0:1–9. doi:10. 1136/jnnp-2019-321496 Neuromuscular Ajroud-Driss; MD (Northwestern University Feinberg; Chicago USA); G. Antonini; MD (Mental Health and Sensory Organs (NESMOS); Sapienza University; Sant’Andrea Hospital; Rome Italy); S. Attarian; PhD (CHU Timone; Marseille France); F. A. Barroso; MD (Instituto de Investigaciones Neurológicas Raúl Carrea; FLENI; Buenos Aires; Argentina); L. Benedetti; PhD (Ospedale Sant’ Andrea La Spezia; La Spezia; Italy); T. E. Bertorini; MD (The University of Tennessee Health Science Center (UTHSC); Memphis USA); T. H. Brannagan; MD (Columbia University; New York City; USA); C. Briani; MD (University of Padova; Padova Italy); R. Bhavaraju-Sanka; MD (University Hospital/University of Texas Health Science Center; San Antonio Texas; S. Butterworth; MD (Pinderfields Hospital; Wakefield UK); C. Casasnovas; PhD (Bellvitge University Hospital – IDIBELL Neurometabolic Diseases Group. CIBERER; Barcelona Spain); G. Cavaletti; MD (University Milano-Bicocca; Monza Italy); S. Chen; PhD (Rutgers; Robert Wood Johnson University Hospital; New Brunswick; K. G. Claeys; PhD (1. University Hospitals Leuven; Leuven Belgium; 2. KU Leuven; Leuven Belgium); J. S. Cosgrove; MD (Leeds General Infirmary; Leeds UK); A. Davidson; MD (University of Glasgow; Glasgow UK); E. Dardiotis; MD (University of Thessaly; Hospital of Larissa; Larissa Greece); C. Dornonville de la Cour; MD (National Hospital Copenhagen; Copenhagen Denmark); C. G. Faber; PhD (Maastricht University Medical Centre; Maastricht; The Netherlands); T. E. Feasby; MD (University of Calgary; Calgary Canada); T. Fujioka; MD (Toho University Medical Center; Tokyo Japan); G. Galassi; MD (University Hospital of Modena; Modena Italy); J. M. Gilchrist; MD (Soulthern Illinois University School of Medicine; Springfield USA); N. A. Goyal; MD (University of California; Irvine USA); V. Granit; MD (Montefiore Medical; Center; New York; G. Gutiérrez-Gutiérrez; MD (Hospital Universitario Infanta Sofia; San Sebastian; Spain); R. D. M. Hadden; PhD (King’s College Hospital; London UK); J. K. L. Holt; PhD; FRCP (The Walton Centre; Liverpool UK); M. Htut; MD (St. George’s Hospital; I. Jericó Pascual; PhD (Complejo Hospitalario de Navarra; Pamplona Spain); S. Karafiath; MD (University of Utah School of Medicine; Salt Lake City; H. D. Katzberg; MD (University of Toronto; Toronto Canada); L. Kiers; MD (University of Melbourne; Royal Melbourne Hospital; Parkville Australia); B. C. Kieseier; MD (Heinrich Heine University; Düsseldorf Germany); K. Kimpinski; MD (University Hospital; LHSC London-Ontario; Canada); S. Kuwabara; PhD (Chiba University; Chiba Japan); J. Y. Kwan; MD (University of Maryland School of Medicine; Baltimore USA); S. S. Ladha; MD (Barrow Neurology Clinics; Phoenix Arizona; V. Lawson; MD (Wexner Medical Center at The Ohio State University; Columbus USA); H. Lehmann; PhD (University Hospital of Cologne; Universitätsklinikum Köln; Cologne Germany); H. Manji; FRCP (Ipswich Hospital; Ipswich UK); G. A. Marfia; MD (Neurological Clinic; Policlinico Tor Vergata; C. Márquez Infante; MD (Hospital Universitario Virgen del Rocio; Seville Spain); M. G. Mattiazzi; MD (Hospital Militar Central; C. J. McDermott; MD (Royal Hallamshire Hospital; NIHR Clinical; Sheffield UK); M. S. Monges; MD (Hospital de Pediatría J. P. Garrahan; G. Morís de la Tassa; MD (Hospital Universitario Central de Asturias; Asturias Spain); C. Nascimbene; PhD (Luigi Sacco Hospital; Milan Italy); E. Nobile Orazio; PhD (Milan University; Humanitas Clinicala and Research Institute Milan; R. J. Nowak; MD (Yale University School of Medicine; New Haven; M. Osei-Bonsu (James Cook University Hospital; Middlesbrough UK); J. Pardo Fernandez (Hospital Clínico de Santiago; Santiago de Compostela (A Coruña); L. Querol Gutierrez; PhD (Hospital de la Santa Creu i Sant Pau; Universitat Autònoma de Barcelona; R. Reisin (Hospital Britanico; S. Rinaldi; MBChB; PhD (University of Oxford R. C. Roberts; MD (Addenbrooke’s Hospital Cambridge; Cambridge UK); I. Rojas-Marcos; MD (Hospital Univesitario Reina Sofia; Cordoba Spain); S. A. Rudnicki; MD (University of Arkansas; Fayetteville USA); A. Schenone; PhD (1. Department of Neurosciences; Rehabilitation Ophthalmology; Genetics and Maternal and Infantile Sciences (DINOGMI); University of Genova; Genova; Italy 2. IRCCS Policlinico San Martino; Genova Italy); M. J. Sedano Tous; MD (Hospital Universitario Marques de Valdecilla; Santander Cantabria; N. Shahrizaila; MD (Neurology Unit; Department of Medicine; Faculty of Medicine; University of Malaya; Malaya); K. Sheikh; PhD (The University of Texas Health Science Center at Houston; Houston USA); N. J. Silvestri; MD (Buffalo General Medical Center; Buffalo NY; C. L. Sommer; MD (Universitätsklinikum Würzburg; Würzburg Germany); J. D. Varrato; DO (Lehigh Valley Health Network; Allentown USA); J. Verschuuren; PhD (Leiden University Medical Centre; Leiden; M. V. Vytopil; PhD (Tufts University School of Medicine Lahey Hospital W. Waheed; MD (University of Vermont Medical Center; Burlington USA); L. Zhou; PhD (Icahn School of Medicine at Mount Sinai; USA). Other collaborators were:U. A. Badrising; I. R. Bella; MD (University of Mass Medical School; Worcester USA); C. Bunschoten; PhD candidate (Erasmus University Medical Centre; Rotterdam; J. Bürmann; Universitätsklinikum des Saarlandes; Homburg Germany); M. Busby; Bradford UK); C. C. Chao; PhD (National Taiwan University Hospital; Taipei Taiwan); M. E. Conti; MD (University Hospital Clinicas; M. C. Dalakas; MD (1. Thomas Jefferson University; Philadelphia USA; 2. National and Kapodistrian University of Athens; Athens Greece); P. Van Damme; PhD (University Hospital Leuven; A. Doets; the Netherlands); G. W. van Dijk; MD (Canisius Wilhelmina Hospital; Nijmegen; M. M. Dimachkie; MD (University of Kansas Medical Center; Kansas City; K. Doppler; A. Echaniz-Laguna; MD (Hopital de Hautepierre; Strasbourgh France); F. Eftimov; PhD (Amsterdam University Medical Centre; Amsterdam; R. Fazio; MD (Scientific Institute San Raffaele; C. Fokke; MD (Gelre Hospital; Zutphen and Apeldoorn; E. A. Fulgenzi; MD (Hospital Cesar Milstein Buenos Aires; M. P. J. Garssen; PhD (Jeroen Bosch Hospital; ’s Hertogenbosch; Zaltbommel and Drunen; C. J. Gijsbers; MD (Vlietland Hospital; Schiedam; J. Gilhuis; PhD (Reinier de Graaf Gasthuis; Delft; A. Grapperon; MD (CHU Timone; S. T. Hsieh; I. Illa; B. Islam; PhD (International Centre for Diarrhoeal Disease Research; Bangladesh (icddr; b) Dhaka; Bangladesh); K. Jellema; PhD (Haaglanden Medisch Centrum; The Hague; K. Kaida; PhD (National Defense Medical College; Saitama Japan); N. Kokubun; MD (Dokkyo Medical University; Tochigi Japan); N. Kolb; MD (University of Vermont; Burlington VT; R. van Koningsveld; PhD (Elkerliek Hospital; Helmond and Deurne; A. J. van der Kooi; K. Kuitwaard; PhD (Albert Schweitzer Hospital; Dordrecht; L. Landschoff Lassen; MD (Glostrup Hospital; Glostrup Denmark); S. E. Leonhard; M. Mandarakas; PhD (Erasmus University Medical Centre; E. Martinez Hernandez; MD (Institut d’Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS); Hospital Clinic; Q. D. Mohammad; PhD (National Institute of Neurosciences and Hospital; Dhaka Bangladesh); M. Pulley; MD (University of Florida; Jacksonville USA); Y. A. Rajabally; PhD (Queen Elizabeth Hospital; Birmingham UK); S. W. Reddel; PhD (Concord Repatriation General Hospital; Sydney Australia); T. van der Ree; MD (Westfriesgasthuis; Hoorn; J. Roodbol; G. M. Sachs; MD (University of Rhode Island; Providence USA); J. P. A. Samijn; PhD (Maasstad Hospital; L. Santoro; PhD (University Federico II; Napels Italy); B. Stein; MD (St. Joseph’s Regional Medical Center; Paterson USA); F. H. Vermeij; MD (Franciscus Gasthuis; L. H. Visser; PhD (Elisabeth-TweeSteden Hospital; Tilburg and Waalwijk; H. J. Willison; PhD (University of Glasgow; P. Wirtz; PhD (HagaZiekenhuis; S. A. Zivkovich; PhD (University of Pittsburgh Medical Center; Pittsburgh USA).

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

Leonhard SE; From the Departments of Neurology (S.E.L., S. Arends, B.v.d.B., A.Y.D., P.A.v.D., K.K., L.W.G.L., W.V.R., J.R., C.V., B.C.J.), and Viroscience (A.A.v.d.E.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Department of Neurology (H.A., T.H.), Aarhus University Hospital, Denmark; Department of Neurology (G.A.), Mental Health and Sensory Organs (NESMOS), Faculty of Medicine and Psychology, University of Rome 'Sapienza,' Sant' Andrea Hospital, Italy; Department of Neurology (S. Arends), Haga Teaching Hospital, The Hague, the Netherlands; Department of Neurology (S. Attarian), Reference Centre for NMD, CHU Timone, Marseille, France; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, FLENI, Buenos Aires, Argentina; Division of Neurology (K.J.B., E.L.P.), Department of Medicine, Groote Schuur Hospital, University of Cape Town, South Africa; Department RH-MDC-Immunology (M.R.B., M.M.), Reinier de Graaf Gasthuis, Delft, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (B.v.d.B., F.H.V.), Franciscus Gasthuis & Vlietland, Schiedam, the Netherlands; Department of Neurology (P.V.d.B.), University Hospital St. Luc, University of Louvain, Brussels, Belgium; Department of Neurology (J.B.), Saarland University Medical School, Homburg (previous hospital), and MVZ Pfalzklinikum (J.B.), Kusel, Germany (current hospital); Department of Neurology (M.B.), Leeds Teaching Hospitals, United Kingdom; Department of Neurology (C.C., V.N.-H.), Neuromuscular Unit, Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Department of Neurology (D.R.C.), Johns Hopkins University, Baltimore, MD; Institute of Infection, Immunity and Inflammation (A.D., H.J.W.), University of Glasgow, United Kingdom; National Hospital Copenhagen (C.D.d.l.C.), Copenhagen, Denmark; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Alberta, Canada; Nuffield Department of Clinical Neurosciences (J.F., S.R.), University of Oxford, John Radcliffe Hospital, United Kingdom; Department of Neurology (T.G.-S., J.P.), Hospital Clínico de Santiago, Spain; Neurology, Neuromuscular Diseases, Electromyography (J.M.G.), Hospital for Special Surgery; Weill Medical College of Cornell University (J.M.G.), New York; Department of Neurology (K.C.G., B.S.), Tufts University School of Medicine, Boston, MA; Department of Neurology (V.G.), Montefiore Medical Center, New York; Department of Neurology (R.D.M.H.), King's College Hospital, London, United Kingdom; Department of Neurology (H.-P.H.), University of Düsseldorf, Germany; Brain and Mind Centre (H.-P.H.), University of Sydney, Australia; Department of Neurology (H.-P.H.), Medical University of Vienna, Austria; Laboratory of Gut-Brain Signaling (I.H., I.J., Z.I., Q.D.M.), Laboratory Sciences and Services Division, icddr,b, Dhaka, Bangladesh; Department of Neurology (J.V.H., S.H.S.), Odense University Hospital, Denmark; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, United Kingdom; Department of Neurology (S. Karafiath), Utah Valley University, Orem; Department of Neurology (H.D.K.), University Health Network, University of Toronto, ON, Canada; Department of Neurology (R.P.K., K.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (N.K.), University of Vermont Medical Centre, Burlington; Department of Neurology (M.K., S. Kusunoki), Kindai University, Faculty of Medicine, Osaka, Japan; Department of Neurology (L.W.G.L., L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (S. Kuwabara), Chiba University, Japan; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (L.M.-A., L.Q.), Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, Spain; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, United Kingdom; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Research Hospital, Milan University, Italy; Department of Clinical Neurophysiology (Y.P.), Reference Centre for NMD, CHU Nantes, France; Department of Neurology (R.R.), Hospital Británico, Buenos Aires, Argentina; Department of Immunology (W.V.R., A.P.T.-G., R.H., B.C.J.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Department of Neurology (S.R.), Oxford University Hospitals NHS Foundation Trust, John Radcliffe Hospital; Department of Neurology (R.C.R.), Cambridge University Hospitals NHS Foundation Trust, Addenbrooke's Hospital, Cambridge Biomedical Campus, United Kingdom; Department of Medicine (N.S., T.C.-Y.), University of Malaya, Kuala Lumpur; Department of Neurology (S.H.S.), University of Southern Denmark, Odense; Department of Clinical Neurophysiology (H.T.), Aarhus University Hospital, Denmark; and Hospital Universitario Marques de Valdecilla (M.J.S.T.), Santander, Cantabria, Spain.; van der Eijk AA; From the Departments of Neurology (S.E.L., S. Arends, B.v.d.B., A.Y.D., P.A.v.D., K.K., L.W.G.L., W.V.R., J.R., C.V., B.C.J.), and Viroscience (A.A.v.d.E.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Department of Neurology (H.A., T.H.), Aarhus University Hospital, Denmark; Department of Neurology (G.A.), Mental Health and Sensory Organs (NESMOS), Faculty of Medicine and Psychology, University of Rome 'Sapienza,' Sant' Andrea Hospital, Italy; Department of Neurology (S. Arends), Haga Teaching Hospital, The Hague, the Netherlands; Department of Neurology (S. Attarian), Reference Centre for NMD, CHU Timone, Marseille, France; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, FLENI, Buenos Aires, Argentina; Division of Neurology (K.J.B., E.L.P.), Department of Medicine, Groote Schuur Hospital, University of Cape Town, South Africa; Department RH-MDC-Immunology (M.R.B., M.M.), Reinier de Graaf Gasthuis, Delft, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (B.v.d.B., F.H.V.), Franciscus Gasthuis & Vlietland, Schiedam, the Netherlands; Department of Neurology (P.V.d.B.), University Hospital St. Luc, University of Louvain, Brussels, Belgium; Department of Neurology (J.B.), Saarland University Medical School, Homburg (previous hospital), and MVZ Pfalzklinikum (J.B.), Kusel, Germany (current hospital); Department of Neurology (M.B.), Leeds Teaching Hospitals, United Kingdom; Department of Neurology (C.C., V.N.-H.), Neuromuscular Unit, Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Department of Neurology (D.R.C.), Johns Hopkins University, Baltimore, MD; Institute of Infection, Immunity and Inflammation (A.D., H.J.W.), University of Glasgow, United Kingdom; National Hospital Copenhagen (C.D.d.l.C.), Copenhagen, Denmark; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Alberta, Canada; Nuffield Department of Clinical Neurosciences (J.F., S.R.), University of Oxford, John Radcliffe Hospital, United Kingdom; Department of Neurology (T.G.-S., J.P.), Hospital Clínico de Santiago, Spain; Neurology, Neuromuscular Diseases, Electromyography (J.M.G.), Hospital for Special Surgery; Weill Medical College of Cornell University (J.M.G.), New York; Department of Neurology (K.C.G., B.S.), Tufts University School of Medicine, Boston, MA; Department of Neurology (V.G.), Montefiore Medical Center, New York; Department of Neurology (R.D.M.H.), King's College Hospital, London, United Kingdom; Department of Neurology (H.-P.H.), University of Düsseldorf, Germany; Brain and Mind Centre (H.-P.H.), University of Sydney, Australia; Department of Neurology (H.-P.H.), Medical University of Vienna, Austria; Laboratory of Gut-Brain Signaling (I.H., I.J., Z.I., Q.D.M.), Laboratory Sciences and Services Division, icddr,b, Dhaka, Bangladesh; Department of Neurology (J.V.H., S.H.S.), Odense University Hospital, Denmark; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, United Kingdom; Department of Neurology (S. Karafiath), Utah Valley University, Orem; Department of Neurology (H.D.K.), University Health Network, University of Toronto, ON, Canada; Department of Neurology (R.P.K., K.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (N.K.), University of Vermont Medical Centre, Burlington; Department of Neurology (M.K., S. Kusunoki), Kindai University, Faculty of Medicine, Osaka, Japan; Department of Neurology (L.W.G.L., L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (S. Kuwabara), Chiba University, Japan; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (L.M.-A., L.Q.), Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, Spain; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, United Kingdom; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Research Hospital, Milan University, Italy; Department of Clinical Neurophysiology (Y.P.), Reference Centre for NMD, CHU Nantes, France; Department of Neurology (R.R.), Hospital Británico, Buenos Aires, Argentina; Department of Immunology (W.V.R., A.P.T.-G., R.H., B.C.J.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Department of Neurology (S.R.), Oxford University Hospitals NHS Foundation Trust, John Radcliffe Hospital; Department of Neurology (R.C.R.), Cambridge University Hospitals NHS Foundation Trust, Addenbrooke's Hospital, Cambridge Biomedical Campus, United Kingdom; Department of Medicine (N.S., T.C.-Y.), University of Malaya, Kuala Lumpur; Department of Neurology (S.H.S.), University of Southern Denmark, Odense; Department of Clinical Neurophysiology (H.T.), Aarhus University Hospital, Denmark; and Hospital Universitario Marques de Valdecilla (M.J.S.T.), Santander, Cantabria, Spain.; Andersen H; From the Departments of Neurology (S.E.L., S. Arends, B.v.d.B., A.Y.D., P.A.v.D., K.K., L.W.G.L., W.V.R., J.R., C.V., B.C.J.), and Viroscience (A.A.v.d.E.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Department of Neurology (H.A., T.H.), Aarhus University Hospital, Denmark; Department of Neurology (G.A.), Mental Health and Sensory Organs (NESMOS), Faculty of Medicine and Psychology, University of Rome 'Sapienza,' Sant' Andrea Hospital, Italy; Department of Neurology (S. Arends), Haga Teaching Hospital, The Hague, the Netherlands; Department of Neurology (S. Attarian), Reference Centre for NMD, CHU Timone, Marseille, France; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, FLENI, Buenos Aires, Argentina; Division of Neurology (K.J.B., E.L.P.), Department of Medicine, Groote Schuur Hospital, University of Cape Town, South Africa; Department RH-MDC-Immunology (M.R.B., M.M.), Reinier de Graaf Gasthuis, Delft, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (B.v.d.B., F.H.V.), Franciscus Gasthuis & Vlietland, Schiedam, the Netherlands; Department of Neurology (P.V.d.B.), University Hospital St. Luc, University of Louvain, Brussels, Belgium; Department of Neurology (J.B.), Saarland University Medical School, Homburg (previous hospital), and MVZ Pfalzklinikum (J.B.), Kusel, Germany (current hospital); Department of Neurology (M.B.), Leeds Teaching Hospitals, United Kingdom; Department of Neurology (C.C., V.N.-H.), Neuromuscular Unit, Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Department of Neurology (D.R.C.), Johns Hopkins University, Baltimore, MD; Institute of Infection, Immunity and Inflammation (A.D., H.J.W.), University of Glasgow, United Kingdom; National Hospital Copenhagen (C.D.d.l.C.), Copenhagen, Denmark; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Alberta, Canada; Nuffield Department of Clinical Neurosciences (J.F., S.R.), University of Oxford, John Radcliffe Hospital, United Kingdom; Department of Neurology (T.G.-S., J.P.), Hospital Clínico de Santiago, Spain; Neurology, Neuromuscular Diseases, Electromyography (J.M.G.), Hospital for Special Surgery; Weill Medical College of Cornell University (J.M.G.), New York; Department of Neurology (K.C.G., B.S.), Tufts University School of Medicine, Boston, MA; Department of Neurology (V.G.), Montefiore Medical Center, New York; Department of Neurology (R.D.M.H.), King's College Hospital, London, United Kingdom; Department of Neurology (H.-P.H.), University of Düsseldorf, Germany; Brain and Mind Centre (H.-P.H.), University of Sydney, Australia; Department of Neurology (H.-P.H.), Medical University of Vienna, Austria; Laboratory of Gut-Brain Signaling (I.H., I.J., Z.I., Q.D.M.), Laboratory Sciences and Services Division, icddr,b, Dhaka, Bangladesh; Department of Neurology (J.V.H., S.H.S.), Odense University Hospital, Denmark; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, United Kingdom; Department of Neurology (S. Karafiath), Utah Valley University, Orem; Department of Neurology (H.D.K.), University Health Network, University of Toronto, ON, Canada; Department of Neurology (R.P.K., K.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (N.K.), University of Vermont Medical Centre, Burlington; Department of Neurology (M.K., S. Kusunoki), Kindai University, Faculty of Medicine, Osaka, Japan; Department of Neurology (L.W.G.L., L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (S. Kuwabara), Chiba University, Japan; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (L.M.-A., L.Q.), Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, Spain; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, United Kingdom; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Research Hospital, Milan University, Italy; Department of Clinical Neurophysiology (Y.P.), Reference Centre for NMD, CHU Nantes, France; Department of Neurology (R.R.), Hospital Británico, Buenos Aires, Argentina; Department of Immunology (W.V.R., A.P.T.-G., R.H., B.C.J.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Department of Neurology (S.R.), Oxford University Hospitals NHS Foundation Trust, John Radcliffe Hospital; Department of Neurology (R.C.R.), Cambridge University Hospitals NHS Foundation Trust, Addenbrooke's Hospital, Cambridge Biomedical Campus, United Kingdom; Department of Medicine (N.S., T.C.-Y.), University of Malaya, Kuala Lumpur; Department of Neurology (S.H.S.), University of Southern Denmark, Odense; Department of Clinical Neurophysiology (H.T.), Aarhus University Hospital, Denmark; and Hospital Universitario Marques de Valdecilla (M.J.S.T.), Santander, Cantabria, Spain.; Antonini G; From the Departments of Neurology (S.E.L., S. Arends, B.v.d.B., A.Y.D., P.A.v.D., K.K., L.W.G.L., W.V.R., J.R., C.V., B.C.J.), and Viroscience (A.A.v.d.E.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Department of Neurology (H.A., T.H.), Aarhus University Hospital, Denmark; Department of Neurology (G.A.), Mental Health and Sensory Organs (NESMOS), Faculty of Medicine and Psychology, University of Rome 'Sapienza,' Sant' Andrea Hospital, Italy; Department of Neurology (S. Arends), Haga Teaching Hospital, The Hague, the Netherlands; Department of Neurology (S. Attarian), Reference Centre for NMD, CHU Timone, Marseille, France; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, FLENI, Buenos Aires, Argentina; Division of Neurology (K.J.B., E.L.P.), Department of Medicine, Groote Schuur Hospital, University of Cape Town, South Africa; Department RH-MDC-Immunology (M.R.B., M.M.), Reinier de Graaf Gasthuis, Delft, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (B.v.d.B., F.H.V.), Franciscus Gasthuis & Vlietland, Schiedam, the Netherlands; Department of Neurology (P.V.d.B.), University Hospital St. Luc, University of Louvain, Brussels, Belgium; Department of Neurology (J.B.), Saarland University Medical School, Homburg (previous hospital), and MVZ Pfalzklinikum (J.B.), Kusel, Germany (current hospital); Department of Neurology (M.B.), Leeds Teaching Hospitals, United Kingdom; Department of Neurology (C.C., V.N.-H.), Neuromuscular Unit, Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Department of Neurology (D.R.C.), Johns Hopkins University, Baltimore, MD; Institute of Infection, Immunity and Inflammation (A.D., H.J.W.), University of Glasgow, United Kingdom; National Hospital Copenhagen (C.D.d.l.C.), Copenhagen, Denmark; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Alberta, Canada; Nuffield Department of Clinical Neurosciences (J.F., S.R.), University of Oxford, John Radcliffe Hospital, United Kingdom; Department of Neurology (T.G.-S., J.P.), Hospital Clínico de Santiago, Spain; Neurology, Neuromuscular Diseases, Electromyography (J.M.G.), Hospital for Special Surgery; Weill Medical College of Cornell University (J.M.G.), New York; Department of Neurology (K.C.G., B.S.), Tufts University School of Medicine, Boston, MA; Department of Neurology (V.G.), Montefiore Medical Center, New York; Department of Neurology (R.D.M.H.), King's College Hospital, London, United Kingdom; Department of Neurology (H.-P.H.), University of Düsseldorf, Germany; Brain and Mind Centre (H.-P.H.), University of Sydney, Australia; Department of Neurology (H.-P.H.), Medical University of Vienna, Austria; Laboratory of Gut-Brain Signaling (I.H., I.J., Z.I., Q.D.M.), Laboratory Sciences and Services Division, icddr,b, Dhaka, Bangladesh; Department of Neurology (J.V.H., S.H.S.), Odense University Hospital, Denmark; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, United Kingdom; Department of Neurology (S. Karafiath), Utah Valley University, Orem; Department of Neurology (H.D.K.), University Health Network, University of Toronto, ON, Canada; Department of Neurology (R.P.K., K.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (N.K.), University of Vermont Medical Centre, Burlington; Department of Neurology (M.K., S. Kusunoki), Kindai University, Faculty of Medicine, Osaka, Japan; Department of Neurology (L.W.G.L., L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (S. Kuwabara), Chiba University, Japan; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (L.M.-A., L.Q.), Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, Spain; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, United Kingdom; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Research Hospital, Milan University, Italy; Department of Clinical Neurophysiology (Y.P.), Reference Centre for NMD, CHU Nantes, France; Department of Neurology (R.R.), Hospital Británico, Buenos Aires, Argentina; Department of Immunology (W.V.R., A.P.T.-G., R.H., B.C.J.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Department of Neurology (S.R.), Oxford University Hospitals NHS Foundation Trust, John Radcliffe Hospital; Department of Neurology (R.C.R.), Cambridge University Hospitals NHS Foundation Trust, Addenbrooke's Hospital, Cambridge Biomedical Campus, United Kingdom; Department of Medicine (N.S., T.C.-Y.), University of Malaya, Kuala Lumpur; Department of Neurology (S.H.S.), University of Southern Denmark, Odense; Department of Clinical Neurophysiology (H.T.), Aarhus University Hospital, Denmark; and Hospital Universitario Marques de Valdecilla (M.J.S.T.), Santander, Cantabria, Spain.; Arends S; From the Departments of Neurology (S.E.L., S. Arends, B.v.d.B., A.Y.D., P.A.v.D., K.K., L.W.G.L., W.V.R., J.R., C.V., B.C.J.), and Viroscience (A.A.v.d.E.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Department of Neurology (H.A., T.H.), Aarhus University Hospital, Denmark; Department of Neurology (G.A.), Mental Health and Sensory Organs (NESMOS), Faculty of Medicine and Psychology, University of Rome 'Sapienza,' Sant' Andrea Hospital, Italy; Department of Neurology (S. Arends), Haga Teaching Hospital, The Hague, the Netherlands; Department of Neurology (S. Attarian), Reference Centre for NMD, CHU Timone, Marseille, France; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, FLENI, Buenos Aires, Argentina; Division of Neurology (K.J.B., E.L.P.), Department of Medicine, Groote Schuur Hospital, University of Cape Town, South Africa; Department RH-MDC-Immunology (M.R.B., M.M.), Reinier de Graaf Gasthuis, Delft, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (B.v.d.B., F.H.V.), Franciscus Gasthuis & Vlietland, Schiedam, the Netherlands; Department of Neurology (P.V.d.B.), University Hospital St. Luc, University of Louvain, Brussels, Belgium; Department of Neurology (J.B.), Saarland University Medical School, Homburg (previous hospital), and MVZ Pfalzklinikum (J.B.), Kusel, Germany (current hospital); Department of Neurology (M.B.), Leeds Teaching Hospitals, United Kingdom; Department of Neurology (C.C., V.N.-H.), Neuromuscular Unit, Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Department of Neurology (D.R.C.), Johns Hopkins University, Baltimore, MD; Institute of Infection, Immunity and Inflammation (A.D., H.J.W.), University of Glasgow, United Kingdom; National Hospital Copenhagen (C.D.d.l.C.), Copenhagen, Denmark; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Alberta, Canada; Nuffield Department of Clinical Neurosciences (J.F., S.R.), University of Oxford, John Radcliffe Hospital, United Kingdom; Department of Neurology (T.G.-S., J.P.), Hospital Clínico de Santiago, Spain; Neurology, Neuromuscular Diseases, Electromyography (J.M.G.), Hospital for Special Surgery; Weill Medical College of Cornell University (J.M.G.), New York; Department of Neurology (K.C.G., B.S.), Tufts University School of Medicine, Boston, MA; Department of Neurology (V.G.), Montefiore Medical Center, New York; Department of Neurology (R.D.M.H.), King's College Hospital, London, United Kingdom; Department of Neurology (H.-P.H.), University of Düsseldorf, Germany; Brain and Mind Centre (H.-P.H.), University of Sydney, Australia; Department of Neurology (H.-P.H.), Medical University of Vienna, Austria; Laboratory of Gut-Brain Signaling (I.H., I.J., Z.I., Q.D.M.), Laboratory Sciences and Services Division, icddr,b, Dhaka, Bangladesh; Department of Neurology (J.V.H., S.H.S.), Odense University Hospital, Denmark; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, United Kingdom; Department of Neurology (S. Karafiath), Utah Valley University, Orem; Department of Neurology (H.D.K.), University Health Network, University of Toronto, ON, Canada; Department of Neurology (R.P.K., K.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (N.K.), University of Vermont Medical Centre, Burlington; Department of Neurology (M.K., S. Kusunoki), Kindai University, Faculty of Medicine, Osaka, Japan; Department of Neurology (L.W.G.L., L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (S. Kuwabara), Chiba University, Japan; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (L.M.-A., L.Q.), Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, Spain; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, United Kingdom; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Research Hospital, Milan University, Italy; Department of Clinical Neurophysiology (Y.P.), Reference Centre for NMD, CHU Nantes, France; Department of Neurology (R.R.), Hospital Británico, Buenos Aires, Argentina; Department of Immunology (W.V.R., A.P.T.-G., R.H., B.C.J.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Department of Neurology (S.R.), Oxford University Hospitals NHS Foundation Trust, John Radcliffe Hospital; Department of Neurology (R.C.R.), Cambridge University Hospitals NHS Foundation Trust, Addenbrooke's Hospital, Cambridge Biomedical Campus, United Kingdom; Department of Medicine (N.S., T.C.-Y.), University of Malaya, Kuala Lumpur; Department of Neurology (S.H.S.), University of Southern Denmark, Odense; Department of Clinical Neurophysiology (H.T.), Aarhus University Hospital, Denmark; and Hospital Universitario Marques de Valdecilla (M.J.S.T.), Santander, Cantabria, Spain.; Attarian S; From the Departments of Neurology (S.E.L., S. Arends, B.v.d.B., A.Y.D., P.A.v.D., K.K., L.W.G.L., W.V.R., J.R., C.V., B.C.J.), and Viroscience (A.A.v.d.E.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Department of Neurology (H.A., T.H.), Aarhus University Hospital, Denmark; Department of Neurology (G.A.), Mental Health and Sensory Organs (NESMOS), Faculty of Medicine and Psychology, University of Rome 'Sapienza,' Sant' Andrea Hospital, Italy; Department of Neurology (S. Arends), Haga Teaching Hospital, The Hague, the Netherlands; Department of Neurology (S. Attarian), Reference Centre for NMD, CHU Timone, Marseille, France; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, FLENI, Buenos Aires, Argentina; Division of Neurology (K.J.B., E.L.P.), Department of Medicine, Groote Schuur Hospital, University of Cape Town, South Africa; Department RH-MDC-Immunology (M.R.B., M.M.), Reinier de Graaf Gasthuis, Delft, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (B.v.d.B., F.H.V.), Franciscus Gasthuis & Vlietland, Schiedam, the Netherlands; Department of Neurology (P.V.d.B.), University Hospital St. Luc, University of Louvain, Brussels, Belgium; Department of Neurology (J.B.), Saarland University Medical School, Homburg (previous hospital), and MVZ Pfalzklinikum (J.B.), Kusel, Germany (current hospital); Department of Neurology (M.B.), Leeds Teaching Hospitals, United Kingdom; Department of Neurology (C.C., V.N.-H.), Neuromuscular Unit, Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Department of Neurology (D.R.C.), Johns Hopkins University, Baltimore, MD; Institute of Infection, Immunity and Inflammation (A.D., H.J.W.), University of Glasgow, United Kingdom; National Hospital Copenhagen (C.D.d.l.C.), Copenhagen, Denmark; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Alberta, Canada; Nuffield Department of Clinical Neurosciences (J.F., S.R.), University of Oxford, John Radcliffe Hospital, United Kingdom; Department of Neurology (T.G.-S., J.P.), Hospital Clínico de Santiago, Spain; Neurology, Neuromuscular Diseases, Electromyography (J.M.G.), Hospital for Special Surgery; Weill Medical College of Cornell University (J.M.G.), New York; Department of Neurology (K.C.G., B.S.), Tufts University School of Medicine, Boston, MA; Department of Neurology (V.G.), Montefiore Medical Center, New York; Department of Neurology (R.D.M.H.), King's College Hospital, London, United Kingdom; Department of Neurology (H.-P.H.), University of Düsseldorf, Germany; Brain and Mind Centre (H.-P.H.), University of Sydney, Australia; Department of Neurology (H.-P.H.), Medical University of Vienna, Austria; Laboratory of Gut-Brain Signaling (I.H., I.J., Z.I., Q.D.M.), Laboratory Sciences and Services Division, icddr,b, Dhaka, Bangladesh; Department of Neurology (J.V.H., S.H.S.), Odense University Hospital, Denmark; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, United Kingdom; Department of Neurology (S. Karafiath), Utah Valley University, Orem; Department of Neurology (H.D.K.), University Health Network, University of Toronto, ON, Canada; Department of Neurology (R.P.K., K.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (N.K.), University of Vermont Medical Centre, Burlington; Department of Neurology (M.K., S. Kusunoki), Kindai University, Faculty of Medicine, Osaka, Japan; Department of Neurology (L.W.G.L., L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (S. Kuwabara), Chiba University, Japan; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (L.M.-A., L.Q.), Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, Spain; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, United Kingdom; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Research Hospital, Milan University, Italy; Department of Clinical Neurophysiology (Y.P.), Reference Centre for NMD, CHU Nantes, France; Department of Neurology (R.R.), Hospital Británico, Buenos Aires, Argentina; Department of Immunology (W.V.R., A.P.T.-G., R.H., B.C.J.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Department of Neurology (S.R.), Oxford University Hospitals NHS Foundation Trust, John Radcliffe Hospital; Department of Neurology (R.C.R.), Cambridge University Hospitals NHS Foundation Trust, Addenbrooke's Hospital, Cambridge Biomedical Campus, United Kingdom; Department of Medicine (N.S., T.C.-Y.), University of Malaya, Kuala Lumpur; Department of Neurology (S.H.S.), University of Southern Denmark, Odense; Department of Clinical Neurophysiology (H.T.), Aarhus University Hospital, Denmark; and Hospital Universitario Marques de Valdecilla (M.J.S.T.), Santander, Cantabria, Spain.; Barroso FA; From the Departments of Neurology (S.E.L., S. Arends, B.v.d.B., A.Y.D., P.A.v.D., K.K., L.W.G.L., W.V.R., J.R., C.V., B.C.J.), and Viroscience (A.A.v.d.E.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Department of Neurology (H.A., T.H.), Aarhus University Hospital, Denmark; Department of Neurology (G.A.), Mental Health and Sensory Organs (NESMOS), Faculty of Medicine and Psychology, University of Rome 'Sapienza,' Sant' Andrea Hospital, Italy; Department of Neurology (S. Arends), Haga Teaching Hospital, The Hague, the Netherlands; Department of Neurology (S. Attarian), Reference Centre for NMD, CHU Timone, Marseille, France; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, FLENI, Buenos Aires, Argentina; Division of Neurology (K.J.B., E.L.P.), Department of Medicine, Groote Schuur Hospital, University of Cape Town, South Africa; Department RH-MDC-Immunology (M.R.B., M.M.), Reinier de Graaf Gasthuis, Delft, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (B.v.d.B., F.H.V.), Franciscus Gasthuis & Vlietland, Schiedam, the Netherlands; Department of Neurology (P.V.d.B.), University Hospital St. Luc, University of Louvain, Brussels, Belgium; Department of Neurology (J.B.), Saarland University Medical School, Homburg (previous hospital), and MVZ Pfalzklinikum (J.B.), Kusel, Germany (current hospital); Department of Neurology (M.B.), Leeds Teaching Hospitals, United Kingdom; Department of Neurology (C.C., V.N.-H.), Neuromuscular Unit, Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Department of Neurology (D.R.C.), Johns Hopkins University, Baltimore, MD; Institute of Infection, Immunity and Inflammation (A.D., H.J.W.), University of Glasgow, United Kingdom; National Hospital Copenhagen (C.D.d.l.C.), Copenhagen, Denmark; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Alberta, Canada; Nuffield Department of Clinical Neurosciences (J.F., S.R.), University of Oxford, John Radcliffe Hospital, United Kingdom; Department of Neurology (T.G.-S., J.P.), Hospital Clínico de Santiago, Spain; Neurology, Neuromuscular Diseases, Electromyography (J.M.G.), Hospital for Special Surgery; Weill Medical College of Cornell University (J.M.G.), New York; Department of Neurology (K.C.G., B.S.), Tufts University School of Medicine, Boston, MA; Department of Neurology (V.G.), Montefiore Medical Center, New York; Department of Neurology (R.D.M.H.), King's College Hospital, London, United Kingdom; Department of Neurology (H.-P.H.), University of Düsseldorf, Germany; Brain and Mind Centre (H.-P.H.), University of Sydney, Australia; Department of Neurology (H.-P.H.), Medical University of Vienna, Austria; Laboratory of Gut-Brain Signaling (I.H., I.J., Z.I., Q.D.M.), Laboratory Sciences and Services Division, icddr,b, Dhaka, Bangladesh; Department of Neurology (J.V.H., S.H.S.), Odense University Hospital, Denmark; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, United Kingdom; Department of Neurology (S. Karafiath), Utah Valley University, Orem; Department of Neurology (H.D.K.), University Health Network, University of Toronto, ON, Canada; Department of Neurology (R.P.K., K.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (N.K.), University of Vermont Medical Centre, Burlington; Department of Neurology (M.K., S. Kusunoki), Kindai University, Faculty of Medicine, Osaka, Japan; Department of Neurology (L.W.G.L., L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (S. Kuwabara), Chiba University, Japan; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (L.M.-A., L.Q.), Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, Spain; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, United Kingdom; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Research Hospital, Milan University, Italy; Department of Clinical Neurophysiology (Y.P.), Reference Centre for NMD, CHU Nantes, France; Department of Neurology (R.R.), Hospital Británico, Buenos Aires, Argentina; Department of Immunology (W.V.R., A.P.T.-G., R.H., B.C.J.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Department of Neurology (S.R.), Oxford University Hospitals NHS Foundation Trust, John Radcliffe Hospital; Department of Neurology (R.C.R.), Cambridge University Hospitals NHS Foundation Trust, Addenbrooke's Hospital, Cambridge Biomedical Campus, United Kingdom; Department of Medicine (N.S., T.C.-Y.), University of Malaya, Kuala Lumpur; Department of Neurology (S.H.S.), University of Southern Denmark, Odense; Department of Clinical Neurophysiology (H.T.), Aarhus University Hospital, Denmark; and Hospital Universitario Marques de Valdecilla (M.J.S.T.), Santander, Cantabria, Spain.; Bateman KJ; From the Departments of Neurology (S.E.L., S. Arends, B.v.d.B., A.Y.D., P.A.v.D., K.K., L.W.G.L., W.V.R., J.R., C.V., B.C.J.), and Viroscience (A.A.v.d.E.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Department of Neurology (H.A., T.H.), Aarhus University Hospital, Denmark; Department of Neurology (G.A.), Mental Health and Sensory Organs (NESMOS), Faculty of Medicine and Psychology, University of Rome 'Sapienza,' Sant' Andrea Hospital, Italy; Department of Neurology (S. Arends), Haga Teaching Hospital, The Hague, the Netherlands; Department of Neurology (S. Attarian), Reference Centre for NMD, CHU Timone, Marseille, France; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, FLENI, Buenos Aires, Argentina; Division of Neurology (K.J.B., E.L.P.), Department of Medicine, Groote Schuur Hospital, University of Cape Town, South Africa; Department RH-MDC-Immunology (M.R.B., M.M.), Reinier de Graaf Gasthuis, Delft, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (B.v.d.B., F.H.V.), Franciscus Gasthuis & Vlietland, Schiedam, the Netherlands; Department of Neurology (P.V.d.B.), University Hospital St. Luc, University of Louvain, Brussels, Belgium; Department of Neurology (J.B.), Saarland University Medical School, Homburg (previous hospital), and MVZ Pfalzklinikum (J.B.), Kusel, Germany (current hospital); Department of Neurology (M.B.), Leeds Teaching Hospitals, United Kingdom; Department of Neurology (C.C., V.N.-H.), Neuromuscular Unit, Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Department of Neurology (D.R.C.), Johns Hopkins University, Baltimore, MD; Institute of Infection, Immunity and Inflammation (A.D., H.J.W.), University of Glasgow, United Kingdom; National Hospital Copenhagen (C.D.d.l.C.), Copenhagen, Denmark; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Alberta, Canada; Nuffield Department of Clinical Neurosciences (J.F., S.R.), University of Oxford, John Radcliffe Hospital, United Kingdom; Department of Neurology (T.G.-S., J.P.), Hospital Clínico de Santiago, Spain; Neurology, Neuromuscular Diseases, Electromyography (J.M.G.), Hospital for Special Surgery; Weill Medical College of Cornell University (J.M.G.), New York; Department of Neurology (K.C.G., B.S.), Tufts University School of Medicine, Boston, MA; Department of Neurology (V.G.), Montefiore Medical Center, New York; Department of Neurology (R.D.M.H.), King's College Hospital, London, United Kingdom; Department of Neurology (H.-P.H.), University of Düsseldorf, Germany; Brain and Mind Centre (H.-P.H.), University of Sydney, Australia; Department of Neurology (H.-P.H.), Medical University of Vienna, Austria; Laboratory of Gut-Brain Signaling (I.H., I.J., Z.I., Q.D.M.), Laboratory Sciences and Services Division, icddr,b, Dhaka, Bangladesh; Department of Neurology (J.V.H., S.H.S.), Odense University Hospital, Denmark; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, United Kingdom; Department of Neurology (S. Karafiath), Utah Valley University, Orem; Department of Neurology (H.D.K.), University Health Network, University of Toronto, ON, Canada; Department of Neurology (R.P.K., K.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (N.K.), University of Vermont Medical Centre, Burlington; Department of Neurology (M.K., S. Kusunoki), Kindai University, Faculty of Medicine, Osaka, Japan; Department of Neurology (L.W.G.L., L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (S. Kuwabara), Chiba University, Japan; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (L.M.-A., L.Q.), Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, Spain; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, United Kingdom; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Research Hospital, Milan University, Italy; Department of Clinical Neurophysiology (Y.P.), Reference Centre for NMD, CHU Nantes, France; Department of Neurology (R.R.), Hospital Británico, Buenos Aires, Argentina; Department of Immunology (W.V.R., A.P.T.-G., R.H., B.C.J.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Department of Neurology (S.R.), Oxford University Hospitals NHS Foundation Trust, John Radcliffe Hospital; Department of Neurology (R.C.R.), Cambridge University Hospitals NHS Foundation Trust, Addenbrooke's Hospital, Cambridge Biomedical Campus, United Kingdom; Department of Medicine (N.S., T.C.-Y.), University of Malaya, Kuala Lumpur; Department of Neurology (S.H.S.), University of Southern Denmark, Odense; Department of Clinical Neurophysiology (H.T.), Aarhus University Hospital, Denmark; and Hospital Universitario Marques de Valdecilla (M.J.S.T.), Santander, Cantabria, Spain.; Batstra MR; From the Departments of Neurology (S.E.L., S. Arends, B.v.d.B., A.Y.D., P.A.v.D., K.K., L.W.G.L., W.V.R., J.R., C.V., B.C.J.), and Viroscience (A.A.v.d.E.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Department of Neurology (H.A., T.H.), Aarhus University Hospital, Denmark; Department of Neurology (G.A.), Mental Health and Sensory Organs (NESMOS), Faculty of Medicine and Psychology, University of Rome 'Sapienza,' Sant' Andrea Hospital, Italy; Department of Neurology (S. Arends), Haga Teaching Hospital, The Hague, the Netherlands; Department of Neurology (S. Attarian), Reference Centre for NMD, CHU Timone, Marseille, France; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, FLENI, Buenos Aires, Argentina; Division of Neurology (K.J.B., E.L.P.), Department of Medicine, Groote Schuur Hospital, University of Cape Town, South Africa; Department RH-MDC-Immunology (M.R.B., M.M.), Reinier de Graaf Gasthuis, Delft, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (B.v.d.B., F.H.V.), Franciscus Gasthuis & Vlietland, Schiedam, the Netherlands; Department of Neurology (P.V.d.B.), University Hospital St. Luc, University of Louvain, Brussels, Belgium; Department of Neurology (J.B.), Saarland University Medical School, Homburg (previous hospital), and MVZ Pfalzklinikum (J.B.), Kusel, Germany (current hospital); Department of Neurology (M.B.), Leeds Teaching Hospitals, United Kingdom; Department of Neurology (C.C., V.N.-H.), Neuromuscular Unit, Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Department of Neurology (D.R.C.), Johns Hopkins University, Baltimore, MD; Institute of Infection, Immunity and Inflammation (A.D., H.J.W.), University of Glasgow, United Kingdom; National Hospital Copenhagen (C.D.d.l.C.), Copenhagen, Denmark; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Alberta, Canada; Nuffield Department of Clinical Neurosciences (J.F., S.R.), University of Oxford, John Radcliffe Hospital, United Kingdom; Department of Neurology (T.G.-S., J.P.), Hospital Clínico de Santiago, Spain; Neurology, Neuromuscular Diseases, Electromyography (J.M.G.), Hospital for Special Surgery; Weill Medical College of Cornell University (J.M.G.), New York; Department of Neurology (K.C.G., B.S.), Tufts University School of Medicine, Boston, MA; Department of Neurology (V.G.), Montefiore Medical Center, New York; Department of Neurology (R.D.M.H.), King's College Hospital, London, United Kingdom; Department of Neurology (H.-P.H.), University of Düsseldorf, Germany; Brain and Mind Centre (H.-P.H.), University of Sydney, Australia; Department of Neurology (H.-P.H.), Medical University of Vienna, Austria; Laboratory of Gut-Brain Signaling (I.H., I.J., Z.I., Q.D.M.), Laboratory Sciences and Services Division, icddr,b, Dhaka, Bangladesh; Department of Neurology (J.V.H., S.H.S.), Odense University Hospital, Denmark; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, United Kingdom; Department of Neurology (S. Karafiath), Utah Valley University, Orem; Department of Neurology (H.D.K.), University Health Network, University of Toronto, ON, Canada; Department of Neurology (R.P.K., K.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (N.K.), University of Vermont Medical Centre, Burlington; Department of Neurology (M.K., S. Kusunoki), Kindai University, Faculty of Medicine, Osaka, Japan; Department of Neurology (L.W.G.L., L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (S. Kuwabara), Chiba University, Japan; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (L.M.-A., L.Q.), Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, Spain; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, United Kingdom; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Research Hospital, Milan University, Italy; Department of Clinical Neurophysiology (Y.P.), Reference Centre for NMD, CHU Nantes, France; Department of Neurology (R.R.), Hospital Británico, Buenos Aires, Argentina; Department of Immunology (W.V.R., A.P.T.-G., R.H., B.C.J.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Department of Neurology (S.R.), Oxford University Hospitals NHS Foundation Trust, John Radcliffe Hospital; Department of Neurology (R.C.R.), Cambridge University Hospitals NHS Foundation Trust, Addenbrooke's Hospital, Cambridge Biomedical Campus, United Kingdom; Department of Medicine (N.S., T.C.-Y.), University of Malaya, Kuala Lumpur; Department of Neurology (S.H.S.), University of Southern Denmark, Odense; Department of Clinical Neurophysiology (H.T.), Aarhus University Hospital, Denmark; and Hospital Universitario Marques de Valdecilla (M.J.S.T.), Santander, Cantabria, Spain.; Benedetti L; From the Departments of Neurology (S.E.L., S. Arends, B.v.d.B., A.Y.D., P.A.v.D., K.K., L.W.G.L., W.V.R., J.R., C.V., B.C.J.), and Viroscience (A.A.v.d.E.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Department of Neurology (H.A., T.H.), Aarhus University Hospital, Denmark; Department of Neurology (G.A.), Mental Health and Sensory Organs (NESMOS), Faculty of Medicine and Psychology, University of Rome 'Sapienza,' Sant' Andrea Hospital, Italy; Department of Neurology (S. Arends), Haga Teaching Hospital, The Hague, the Netherlands; Department of Neurology (S. Attarian), Reference Centre for NMD, CHU Timone, Marseille, France; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, FLENI, Buenos Aires, Argentina; Division of Neurology (K.J.B., E.L.P.), Department of Medicine, Groote Schuur Hospital, University of Cape Town, South Africa; Department RH-MDC-Immunology (M.R.B., M.M.), Reinier de Graaf Gasthuis, Delft, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (B.v.d.B., F.H.V.), Franciscus Gasthuis & Vlietland, Schiedam, the Netherlands; Department of Neurology (P.V.d.B.), University Hospital St. Luc, University of Louvain, Brussels, Belgium; Department of Neurology (J.B.), Saarland University Medical School, Homburg (previous hospital), and MVZ Pfalzklinikum (J.B.), Kusel, Germany (current hospital); Department of Neurology (M.B.), Leeds Teaching Hospitals, United Kingdom; Department of Neurology (C.C., V.N.-H.), Neuromuscular Unit, Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Department of Neurology (D.R.C.), Johns Hopkins University, Baltimore, MD; Institute of Infection, Immunity and Inflammation (A.D., H.J.W.), University of Glasgow, United Kingdom; National Hospital Copenhagen (C.D.d.l.C.), Copenhagen, Denmark; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Alberta, Canada; Nuffield Department of Clinical Neurosciences (J.F., S.R.), University of Oxford, John Radcliffe Hospital, United Kingdom; Department of Neurology (T.G.-S., J.P.), Hospital Clínico de Santiago, Spain; Neurology, Neuromuscular Diseases, Electromyography (J.M.G.), Hospital for Special Surgery; Weill Medical College of Cornell University (J.M.G.), New York; Department of Neurology (K.C.G., B.S.), Tufts University School of Medicine, Boston, MA; Department of Neurology (V.G.), Montefiore Medical Center, New York; Department of Neurology (R.D.M.H.), King's College Hospital, London, United Kingdom; Department of Neurology (H.-P.H.), University of Düsseldorf, Germany; Brain and Mind Centre (H.-P.H.), University of Sydney, Australia; Department of Neurology (H.-P.H.), Medical University of Vienna, Austria; Laboratory of Gut-Brain Signaling (I.H., I.J., Z.I., Q.D.M.), Laboratory Sciences and Services Division, icddr,b, Dhaka, Bangladesh; Department of Neurology (J.V.H., S.H.S.), Odense University Hospital, Denmark; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, United Kingdom; Department of Neurology (S. Karafiath), Utah Valley University, Orem; Department of Neurology (H.D.K.), University Health Network, University of Toronto, ON, Canada; Department of Neurology (R.P.K., K.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (N.K.), University of Vermont Medical Centre, Burlington; Department of Neurology (M.K., S. Kusunoki), Kindai University, Faculty of Medicine, Osaka, Japan; Department of Neurology (L.W.G.L., L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (S. Kuwabara), Chiba University, Japan; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (L.M.-A., L.Q.), Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, Spain; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, United Kingdom; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Research Hospital, Milan University, Italy; Department of Clinical Neurophysiology (Y.P.), Reference Centre for NMD, CHU Nantes, France; Department of Neurology (R.R.), Hospital Británico, Buenos Aires, Argentina; Department of Immunology (W.V.R., A.P.T.-G., R.H., B.C.J.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Department of Neurology (S.R.), Oxford University Hospitals NHS Foundation Trust, John Radcliffe Hospital; Department of Neurology (R.C.R.), Cambridge University Hospitals NHS Foundation Trust, Addenbrooke's Hospital, Cambridge Biomedical Campus, United Kingdom; Department of Medicine (N.S., T.C.-Y.), University of Malaya, Kuala Lumpur; Department of Neurology (S.H.S.), University of Southern Denmark, Odense; Department of Clinical Neurophysiology (H.T.), Aarhus University Hospital, Denmark; and Hospital Universitario Marques de Valdecilla (M.J.S.T.), Santander, Cantabria, Spain.; van den Berg B; From the Departments of Neurology (S.E.L., S. Arends, B.v.d.B., A.Y.D., P.A.v.D., K.K., L.W.G.L., W.V.R., J.R., C.V., B.C.J.), and Viroscience (A.A.v.d.E.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Department of Neurology (H.A., T.H.), Aarhus University Hospital, Denmark; Department of Neurology (G.A.), Mental Health and Sensory Organs (NESMOS), Faculty of Medicine and Psychology, University of Rome 'Sapienza,' Sant' Andrea Hospital, Italy; Department of Neurology (S. Arends), Haga Teaching Hospital, The Hague, the Netherlands; Department of Neurology (S. Attarian), Reference Centre for NMD, CHU Timone, Marseille, France; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, FLENI, Buenos Aires, Argentina; Division of Neurology (K.J.B., E.L.P.), Department of Medicine, Groote Schuur Hospital, University of Cape Town, South Africa; Department RH-MDC-Immunology (M.R.B., M.M.), Reinier de Graaf Gasthuis, Delft, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (B.v.d.B., F.H.V.), Franciscus Gasthuis & Vlietland, Schiedam, the Netherlands; Department of Neurology (P.V.d.B.), University Hospital St. Luc, University of Louvain, Brussels, Belgium; Department of Neurology (J.B.), Saarland University Medical School, Homburg (previous hospital), and MVZ Pfalzklinikum (J.B.), Kusel, Germany (current hospital); Department of Neurology (M.B.), Leeds Teaching Hospitals, United Kingdom; Department of Neurology (C.C., V.N.-H.), Neuromuscular Unit, Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Department of Neurology (D.R.C.), Johns Hopkins University, Baltimore, MD; Institute of Infection, Immunity and Inflammation (A.D., H.J.W.), University of Glasgow, United Kingdom; National Hospital Copenhagen (C.D.d.l.C.), Copenhagen, Denmark; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Alberta, Canada; Nuffield Department of Clinical Neurosciences (J.F., S.R.), University of Oxford, John Radcliffe Hospital, United Kingdom; Department of Neurology (T.G.-S., J.P.), Hospital Clínico de Santiago, Spain; Neurology, Neuromuscular Diseases, Electromyography (J.M.G.), Hospital for Special Surgery; Weill Medical College of Cornell University (J.M.G.), New York; Department of Neurology (K.C.G., B.S.), Tufts University School of Medicine, Boston, MA; Department of Neurology (V.G.), Montefiore Medical Center, New York; Department of Neurology (R.D.M.H.), King's College Hospital, London, United Kingdom; Department of Neurology (H.-P.H.), University of Düsseldorf, Germany; Brain and Mind Centre (H.-P.H.), University of Sydney, Australia; Department of Neurology (H.-P.H.), Medical University of Vienna, Austria; Laboratory of Gut-Brain Signaling (I.H., I.J., Z.I., Q.D.M.), Laboratory Sciences and Services Division, icddr,b, Dhaka, Bangladesh; Department of Neurology (J.V.H., S.H.S.), Odense University Hospital, Denmark; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, United Kingdom; Department of Neurology (S. Karafiath), Utah Valley University, Orem; Department of Neurology (H.D.K.), University Health Network, University of Toronto, ON, Canada; Department of Neurology (R.P.K., K.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (N.K.), University of Vermont Medical Centre, Burlington; Department of Neurology (M.K., S. Kusunoki), Kindai University, Faculty of Medicine, Osaka, Japan; Department of Neurology (L.W.G.L., L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (S. Kuwabara), Chiba University, Japan; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (L.M.-A., L.Q.), Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, Spain; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, United Kingdom; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Research Hospital, Milan University, Italy; Department of Clinical Neurophysiology (Y.P.), Reference Centre for NMD, CHU Nantes, France; Department of Neurology (R.R.), Hospital Británico, Buenos Aires, Argentina; Department of Immunology (W.V.R., A.P.T.-G., R.H., B.C.J.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Department of Neurology (S.R.), Oxford University Hospitals NHS Foundation Trust, John Radcliffe Hospital; Department of Neurology (R.C.R.), Cambridge University Hospitals NHS Foundation Trust, Addenbrooke's Hospital, Cambridge Biomedical Campus, United Kingdom; Department of Medicine (N.S., T.C.-Y.), University of Malaya, Kuala Lumpur; Department of Neurology (S.H.S.), University of Southern Denmark, Odense; Department of Clinical Neurophysiology (H.T.), Aarhus University Hospital, Denmark; and Hospital Universitario Marques de Valdecilla (M.J.S.T.), Santander, Cantabria, Spain.; Van den Bergh P; From the Departments of Neurology (S.E.L., S. Arends, B.v.d.B., A.Y.D., P.A.v.D., K.K., L.W.G.L., W.V.R., J.R., C.V., B.C.J.), and Viroscience (A.A.v.d.E.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Department of Neurology (H.A., T.H.), Aarhus University Hospital, Denmark; Department of Neurology (G.A.), Mental Health and Sensory Organs (NESMOS), Faculty of Medicine and Psychology, University of Rome 'Sapienza,' Sant' Andrea Hospital, Italy; Department of Neurology (S. Arends), Haga Teaching Hospital, The Hague, the Netherlands; Department of Neurology (S. Attarian), Reference Centre for NMD, CHU Timone, Marseille, France; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, FLENI, Buenos Aires, Argentina; Division of Neurology (K.J.B., E.L.P.), Department of Medicine, Groote Schuur Hospital, University of Cape Town, South Africa; Department RH-MDC-Immunology (M.R.B., M.M.), Reinier de Graaf Gasthuis, Delft, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (B.v.d.B., F.H.V.), Franciscus Gasthuis & Vlietland, Schiedam, the Netherlands; Department of Neurology (P.V.d.B.), University Hospital St. Luc, University of Louvain, Brussels, Belgium; Department of Neurology (J.B.), Saarland University Medical School, Homburg (previous hospital), and MVZ Pfalzklinikum (J.B.), Kusel, Germany (current hospital); Department of Neurology (M.B.), Leeds Teaching Hospitals, United Kingdom; Department of Neurology (C.C., V.N.-H.), Neuromuscular Unit, Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Department of Neurology (D.R.C.), Johns Hopkins University, Baltimore, MD; Institute of Infection, Immunity and Inflammation (A.D., H.J.W.), University of Glasgow, United Kingdom; National Hospital Copenhagen (C.D.d.l.C.), Copenhagen, Denmark; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Alberta, Canada; Nuffield Department of Clinical Neurosciences (J.F., S.R.), University of Oxford, John Radcliffe Hospital, United Kingdom; Department of Neurology (T.G.-S., J.P.), Hospital Clínico de Santiago, Spain; Neurology, Neuromuscular Diseases, Electromyography (J.M.G.), Hospital for Special Surgery; Weill Medical College of Cornell University (J.M.G.), New York; Department of Neurology (K.C.G., B.S.), Tufts University School of Medicine, Boston, MA; Department of Neurology (V.G.), Montefiore Medical Center, New York; Department of Neurology (R.D.M.H.), King's College Hospital, London, United Kingdom; Department of Neurology (H.-P.H.), University of Düsseldorf, Germany; Brain and Mind Centre (H.-P.H.), University of Sydney, Australia; Department of Neurology (H.-P.H.), Medical University of Vienna, Austria; Laboratory of Gut-Brain Signaling (I.H., I.J., Z.I., Q.D.M.), Laboratory Sciences and Services Division, icddr,b, Dhaka, Bangladesh; Department of Neurology (J.V.H., S.H.S.), Odense University Hospital, Denmark; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, United Kingdom; Department of Neurology (S. Karafiath), Utah Valley University, Orem; Department of Neurology (H.D.K.), University Health Network, University of Toronto, ON, Canada; Department of Neurology (R.P.K., K.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (N.K.), University of Vermont Medical Centre, Burlington; Department of Neurology (M.K., S. Kusunoki), Kindai University, Faculty of Medicine, Osaka, Japan; Department of Neurology (L.W.G.L., L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (S. Kuwabara), Chiba University, Japan; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (L.M.-A., L.Q.), Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, Spain; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, United Kingdom; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Research Hospital, Milan University, Italy; Department of Clinical Neurophysiology (Y.P.), Reference Centre for NMD, CHU Nantes, France; Department of Neurology (R.R.), Hospital Británico, Buenos Aires, Argentina; Department of Immunology (W.V.R., A.P.T.-G., R.H., B.C.J.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Department of Neurology (S.R.), Oxford University Hospitals NHS Foundation Trust, John Radcliffe Hospital; Department of Neurology (R.C.R.), Cambridge University Hospitals NHS Foundation Trust, Addenbrooke's Hospital, Cambridge Biomedical Campus, United Kingdom; Department of Medicine (N.S., T.C.-Y.), University of Malaya, Kuala Lumpur; Department of Neurology (S.H.S.), University of Southern Denmark, Odense; Department of Clinical Neurophysiology (H.T.), Aarhus University Hospital, Denmark; and Hospital Universitario Marques de Valdecilla (M.J.S.T.), Santander, Cantabria, Spain.; Bürmann J; From the Departments of Neurology (S.E.L., S. Arends, B.v.d.B., A.Y.D., P.A.v.D., K.K., L.W.G.L., W.V.R., J.R., C.V., B.C.J.), and Viroscience (A.A.v.d.E.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Department of Neurology (H.A., T.H.), Aarhus University Hospital, Denmark; Department of Neurology (G.A.), Mental Health and Sensory Organs (NESMOS), Faculty of Medicine and Psychology, University of Rome 'Sapienza,' Sant' Andrea Hospital, Italy; Department of Neurology (S. Arends), Haga Teaching Hospital, The Hague, the Netherlands; Department of Neurology (S. Attarian), Reference Centre for NMD, CHU Timone, Marseille, France; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, FLENI, Buenos Aires, Argentina; Division of Neurology (K.J.B., E.L.P.), Department of Medicine, Groote Schuur Hospital, University of Cape Town, South Africa; Department RH-MDC-Immunology (M.R.B., M.M.), Reinier de Graaf Gasthuis, Delft, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (B.v.d.B., F.H.V.), Franciscus Gasthuis & Vlietland, Schiedam, the Netherlands; Department of Neurology (P.V.d.B.), University Hospital St. Luc, University of Louvain, Brussels, Belgium; Department of Neurology (J.B.), Saarland University Medical School, Homburg (previous hospital), and MVZ Pfalzklinikum (J.B.), Kusel, Germany (current hospital); Department of Neurology (M.B.), Leeds Teaching Hospitals, United Kingdom; Department of Neurology (C.C., V.N.-H.), Neuromuscular Unit, Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Department of Neurology (D.R.C.), Johns Hopkins University, Baltimore, MD; Institute of Infection, Immunity and Inflammation (A.D., H.J.W.), University of Glasgow, United Kingdom; National Hospital Copenhagen (C.D.d.l.C.), Copenhagen, Denmark; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Alberta, Canada; Nuffield Department of Clinical Neurosciences (J.F., S.R.), University of Oxford, John Radcliffe Hospital, United Kingdom; Department of Neurology (T.G.-S., J.P.), Hospital Clínico de Santiago, Spain; Neurology, Neuromuscular Diseases, Electromyography (J.M.G.), Hospital for Special Surgery; Weill Medical College of Cornell University (J.M.G.), New York; Department of Neurology (K.C.G., B.S.), Tufts University School of Medicine, Boston, MA; Department of Neurology (V.G.), Montefiore Medical Center, New York; Department of Neurology (R.D.M.H.), King's College Hospital, London, United Kingdom; Department of Neurology (H.-P.H.), University of Düsseldorf, Germany; Brain and Mind Centre (H.-P.H.), University of Sydney, Australia; Department of Neurology (H.-P.H.), Medical University of Vienna, Austria; Laboratory of Gut-Brain Signaling (I.H., I.J., Z.I., Q.D.M.), Laboratory Sciences and Services Division, icddr,b, Dhaka, Bangladesh; Department of Neurology (J.V.H., S.H.S.), Odense University Hospital, Denmark; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, United Kingdom; Department of Neurology (S. Karafiath), Utah Valley University, Orem; Department of Neurology (H.D.K.), University Health Network, University of Toronto, ON, Canada; Department of Neurology (R.P.K., K.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (N.K.), University of Vermont Medical Centre, Burlington; Department of Neurology (M.K., S. Kusunoki), Kindai University, Faculty of Medicine, Osaka, Japan; Department of Neurology (L.W.G.L., L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (S. Kuwabara), Chiba University, Japan; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (L.M.-A., L.Q.), Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, Spain; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, United Kingdom; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Research Hospital, Milan University, Italy; Department of Clinical Neurophysiology (Y.P.), Reference Centre for NMD, CHU Nantes, France; Department of Neurology (R.R.), Hospital Británico, Buenos Aires, Argentina; Department of Immunology (W.V.R., A.P.T.-G., R.H., B.C.J.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Department of Neurology (S.R.), Oxford University Hospitals NHS Foundation Trust, John Radcliffe Hospital; Department of Neurology (R.C.R.), Cambridge University Hospitals NHS Foundation Trust, Addenbrooke's Hospital, Cambridge Biomedical Campus, United Kingdom; Department of Medicine (N.S., T.C.-Y.), University of Malaya, Kuala Lumpur; Department of Neurology (S.H.S.), University of Southern Denmark, Odense; Department of Clinical Neurophysiology (H.T.), Aarhus University Hospital, Denmark; and Hospital Universitario Marques de Valdecilla (M.J.S.T.), Santander, Cantabria, Spain.; Busby M; From the Departments of Neurology (S.E.L., S. Arends, B.v.d.B., A.Y.D., P.A.v.D., K.K., L.W.G.L., W.V.R., J.R., C.V., B.C.J.), and Viroscience (A.A.v.d.E.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Department of Neurology (H.A., T.H.), Aarhus University Hospital, Denmark; Department of Neurology (G.A.), Mental Health and Sensory Organs (NESMOS), Faculty of Medicine and Psychology, University of Rome 'Sapienza,' Sant' Andrea Hospital, Italy; Department of Neurology (S. Arends), Haga Teaching Hospital, The Hague, the Netherlands; Department of Neurology (S. Attarian), Reference Centre for NMD, CHU Timone, Marseille, France; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, FLENI, Buenos Aires, Argentina; Division of Neurology (K.J.B., E.L.P.), Department of Medicine, Groote Schuur Hospital, University of Cape Town, South Africa; Department RH-MDC-Immunology (M.R.B., M.M.), Reinier de Graaf Gasthuis, Delft, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (B.v.d.B., F.H.V.), Franciscus Gasthuis & Vlietland, Schiedam, the Netherlands; Department of Neurology (P.V.d.B.), University Hospital St. Luc, University of Louvain, Brussels, Belgium; Department of Neurology (J.B.), Saarland University Medical School, Homburg (previous hospital), and MVZ Pfalzklinikum (J.B.), Kusel, Germany (current hospital); Department of Neurology (M.B.), Leeds Teaching Hospitals, United Kingdom; Department of Neurology (C.C., V.N.-H.), Neuromuscular Unit, Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Department of Neurology (D.R.C.), Johns Hopkins University, Baltimore, MD; Institute of Infection, Immunity and Inflammation (A.D., H.J.W.), University of Glasgow, United Kingdom; National Hospital Copenhagen (C.D.d.l.C.), Copenhagen, Denmark; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Alberta, Canada; Nuffield Department of Clinical Neurosciences (J.F., S.R.), University of Oxford, John Radcliffe Hospital, United Kingdom; Department of Neurology (T.G.-S., J.P.), Hospital Clínico de Santiago, Spain; Neurology, Neuromuscular Diseases, Electromyography (J.M.G.), Hospital for Special Surgery; Weill Medical College of Cornell University (J.M.G.), New York; Department of Neurology (K.C.G., B.S.), Tufts University School of Medicine, Boston, MA; Department of Neurology (V.G.), Montefiore Medical Center, New York; Department of Neurology (R.D.M.H.), King's College Hospital, London, United Kingdom; Department of Neurology (H.-P.H.), University of Düsseldorf, Germany; Brain and Mind Centre (H.-P.H.), University of Sydney, Australia; Department of Neurology (H.-P.H.), Medical University of Vienna, Austria; Laboratory of Gut-Brain Signaling (I.H., I.J., Z.I., Q.D.M.), Laboratory Sciences and Services Division, icddr,b, Dhaka, Bangladesh; Department of Neurology (J.V.H., S.H.S.), Odense University Hospital, Denmark; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, United Kingdom; Department of Neurology (S. Karafiath), Utah Valley University, Orem; Department of Neurology (H.D.K.), University Health Network, University of Toronto, ON, Canada; Department of Neurology (R.P.K., K.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (N.K.), University of Vermont Medical Centre, Burlington; Department of Neurology (M.K., S. Kusunoki), Kindai University, Faculty of Medicine, Osaka, Japan; Department of Neurology (L.W.G.L., L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (S. Kuwabara), Chiba University, Japan; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (L.M.-A., L.Q.), Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, Spain; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, United Kingdom; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Research Hospital, Milan University, Italy; Department of Clinical Neurophysiology (Y.P.), Reference Centre for NMD, CHU Nantes, France; Department of Neurology (R.R.), Hospital Británico, Buenos Aires, Argentina; Department of Immunology (W.V.R., A.P.T.-G., R.H., B.C.J.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Department of Neurology (S.R.), Oxford University Hospitals NHS Foundation Trust, John Radcliffe Hospital; Department of Neurology (R.C.R.), Cambridge University Hospitals NHS Foundation Trust, Addenbrooke's Hospital, Cambridge Biomedical Campus, United Kingdom; Department of Medicine (N.S., T.C.-Y.), University of Malaya, Kuala Lumpur; Department of Neurology (S.H.S.), University of Southern Denmark, Odense; Department of Clinical Neurophysiology (H.T.), Aarhus University Hospital, Denmark; and Hospital Universitario Marques de Valdecilla (M.J.S.T.), Santander, Cantabria, Spain.; Casasnovas C; From the Departments of Neurology (S.E.L., S. Arends, B.v.d.B., A.Y.D., P.A.v.D., K.K., L.W.G.L., W.V.R., J.R., C.V., B.C.J.), and Viroscience (A.A.v.d.E.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Department of Neurology (H.A., T.H.), Aarhus University Hospital, Denmark; Department of Neurology (G.A.), Mental Health and Sensory Organs (NESMOS), Faculty of Medicine and Psychology, University of Rome 'Sapienza,' Sant' Andrea Hospital, Italy; Department of Neurology (S. Arends), Haga Teaching Hospital, The Hague, the Netherlands; Department of Neurology (S. Attarian), Reference Centre for NMD, CHU Timone, Marseille, France; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, FLENI, Buenos Aires, Argentina; Division of Neurology (K.J.B., E.L.P.), Department of Medicine, Groote Schuur Hospital, University of Cape Town, South Africa; Department RH-MDC-Immunology (M.R.B., M.M.), Reinier de Graaf Gasthuis, Delft, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (B.v.d.B., F.H.V.), Franciscus Gasthuis & Vlietland, Schiedam, the Netherlands; Department of Neurology (P.V.d.B.), University Hospital St. Luc, University of Louvain, Brussels, Belgium; Department of Neurology (J.B.), Saarland University Medical School, Homburg (previous hospital), and MVZ Pfalzklinikum (J.B.), Kusel, Germany (current hospital); Department of Neurology (M.B.), Leeds Teaching Hospitals, United Kingdom; Department of Neurology (C.C., V.N.-H.), Neuromuscular Unit, Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Department of Neurology (D.R.C.), Johns Hopkins University, Baltimore, MD; Institute of Infection, Immunity and Inflammation (A.D., H.J.W.), University of Glasgow, United Kingdom; National Hospital Copenhagen (C.D.d.l.C.), Copenhagen, Denmark; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Alberta, Canada; Nuffield Department of Clinical Neurosciences (J.F., S.R.), University of Oxford, John Radcliffe Hospital, United Kingdom; Department of Neurology (T.G.-S., J.P.), Hospital Clínico de Santiago, Spain; Neurology, Neuromuscular Diseases, Electromyography (J.M.G.), Hospital for Special Surgery; Weill Medical College of Cornell University (J.M.G.), New York; Department of Neurology (K.C.G., B.S.), Tufts University School of Medicine, Boston, MA; Department of Neurology (V.G.), Montefiore Medical Center, New York; Department of Neurology (R.D.M.H.), King's College Hospital, London, United Kingdom; Department of Neurology (H.-P.H.), University of Düsseldorf, Germany; Brain and Mind Centre (H.-P.H.), University of Sydney, Australia; Department of Neurology (H.-P.H.), Medical University of Vienna, Austria; Laboratory of Gut-Brain Signaling (I.H., I.J., Z.I., Q.D.M.), Laboratory Sciences and Services Division, icddr,b, Dhaka, Bangladesh; Department of Neurology (J.V.H., S.H.S.), Odense University Hospital, Denmark; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, United Kingdom; Department of Neurology (S. Karafiath), Utah Valley University, Orem; Department of Neurology (H.D.K.), University Health Network, University of Toronto, ON, Canada; Department of Neurology (R.P.K., K.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (N.K.), University of Vermont Medical Centre, Burlington; Department of Neurology (M.K., S. Kusunoki), Kindai University, Faculty of Medicine, Osaka, Japan; Department of Neurology (L.W.G.L., L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (S. Kuwabara), Chiba University, Japan; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (L.M.-A., L.Q.), Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, Spain; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, United Kingdom; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Research Hospital, Milan University, Italy; Department of Clinical Neurophysiology (Y.P.), Reference Centre for NMD, CHU Nantes, France; Department of Neurology (R.R.), Hospital Británico, Buenos Aires, Argentina; Department of Immunology (W.V.R., A.P.T.-G., R.H., B.C.J.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Department of Neurology (S.R.), Oxford University Hospitals NHS Foundation Trust, John Radcliffe Hospital; Department of Neurology (R.C.R.), Cambridge University Hospitals NHS Foundation Trust, Addenbrooke's Hospital, Cambridge Biomedical Campus, United Kingdom; Department of Medicine (N.S., T.C.-Y.), University of Malaya, Kuala Lumpur; Department of Neurology (S.H.S.), University of Southern Denmark, Odense; Department of Clinical Neurophysiology (H.T.), Aarhus University Hospital, Denmark; and Hospital Universitario Marques de Valdecilla (M.J.S.T.), Santander, Cantabria, Spain.; Cornblath DR; From the Departments of Neurology (S.E.L., S. Arends, B.v.d.B., A.Y.D., P.A.v.D., K.K., L.W.G.L., W.V.R., J.R., C.V., B.C.J.), and Viroscience (A.A.v.d.E.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Department of Neurology (H.A., T.H.), Aarhus University Hospital, Denmark; Department of Neurology (G.A.), Mental Health and Sensory Organs (NESMOS), Faculty of Medicine and Psychology, University of Rome 'Sapienza,' Sant' Andrea Hospital, Italy; Department of Neurology (S. Arends), Haga Teaching Hospital, The Hague, the Netherlands; Department of Neurology (S. Attarian), Reference Centre for NMD, CHU Timone, Marseille, France; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, FLENI, Buenos Aires, Argentina; Division of Neurology (K.J.B., E.L.P.), Department of Medicine, Groote Schuur Hospital, University of Cape Town, South Africa; Department RH-MDC-Immunology (M.R.B., M.M.), Reinier de Graaf Gasthuis, Delft, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (B.v.d.B., F.H.V.), Franciscus Gasthuis & Vlietland, Schiedam, the Netherlands; Department of Neurology (P.V.d.B.), University Hospital St. Luc, University of Louvain, Brussels, Belgium; Department of Neurology (J.B.), Saarland University Medical School, Homburg (previous hospital), and MVZ Pfalzklinikum (J.B.), Kusel, Germany (current hospital); Department of Neurology (M.B.), Leeds Teaching Hospitals, United Kingdom; Department of Neurology (C.C., V.N.-H.), Neuromuscular Unit, Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Department of Neurology (D.R.C.), Johns Hopkins University, Baltimore, MD; Institute of Infection, Immunity and Inflammation (A.D., H.J.W.), University of Glasgow, United Kingdom; National Hospital Copenhagen (C.D.d.l.C.), Copenhagen, Denmark; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Alberta, Canada; Nuffield Department of Clinical Neurosciences (J.F., S.R.), University of Oxford, John Radcliffe Hospital, United Kingdom; Department of Neurology (T.G.-S., J.P.), Hospital Clínico de Santiago, Spain; Neurology, Neuromuscular Diseases, Electromyography (J.M.G.), Hospital for Special Surgery; Weill Medical College of Cornell University (J.M.G.), New York; Department of Neurology (K.C.G., B.S.), Tufts University School of Medicine, Boston, MA; Department of Neurology (V.G.), Montefiore Medical Center, New York; Department of Neurology (R.D.M.H.), King's College Hospital, London, United Kingdom; Department of Neurology (H.-P.H.), University of Düsseldorf, Germany; Brain and Mind Centre (H.-P.H.), University of Sydney, Australia; Department of Neurology (H.-P.H.), Medical University of Vienna, Austria; Laboratory of Gut-Brain Signaling (I.H., I.J., Z.I., Q.D.M.), Laboratory Sciences and Services Division, icddr,b, Dhaka, Bangladesh; Department of Neurology (J.V.H., S.H.S.), Odense University Hospital, Denmark; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, United Kingdom; Department of Neurology (S. Karafiath), Utah Valley University, Orem; Department of Neurology (H.D.K.), University Health Network, University of Toronto, ON, Canada; Department of Neurology (R.P.K., K.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (N.K.), University of Vermont Medical Centre, Burlington; Department of Neurology (M.K., S. Kusunoki), Kindai University, Faculty of Medicine, Osaka, Japan; Department of Neurology (L.W.G.L., L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (S. Kuwabara), Chiba University, Japan; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (L.M.-A., L.Q.), Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, Spain; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, United Kingdom; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Research Hospital, Milan University, Italy; Department of Clinical Neurophysiology (Y.P.), Reference Centre for NMD, CHU Nantes, France; Department of Neurology (R.R.), Hospital Británico, Buenos Aires, Argentina; Department of Immunology (W.V.R., A.P.T.-G., R.H., B.C.J.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Department of Neurology (S.R.), Oxford University Hospitals NHS Foundation Trust, John Radcliffe Hospital; Department of Neurology (R.C.R.), Cambridge University Hospitals NHS Foundation Trust, Addenbrooke's Hospital, Cambridge Biomedical Campus, United Kingdom; Department of Medicine (N.S., T.C.-Y.), University of Malaya, Kuala Lumpur; Department of Neurology (S.H.S.), University of Southern Denmark, Odense; Department of Clinical Neurophysiology (H.T.), Aarhus University Hospital, Denmark; and Hospital Universitario Marques de Valdecilla (M.J.S.T.), Santander, Cantabria, Spain.; Davidson A; From the Departments of Neurology (S.E.L., S. Arends, B.v.d.B., A.Y.D., P.A.v.D., K.K., L.W.G.L., W.V.R., J.R., C.V., B.C.J.), and Viroscience (A.A.v.d.E.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Department of Neurology (H.A., T.H.), Aarhus University Hospital, Denmark; Department of Neurology (G.A.), Mental Health and Sensory Organs (NESMOS), Faculty of Medicine and Psychology, University of Rome 'Sapienza,' Sant' Andrea Hospital, Italy; Department of Neurology (S. Arends), Haga Teaching Hospital, The Hague, the Netherlands; Department of Neurology (S. Attarian), Reference Centre for NMD, CHU Timone, Marseille, France; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, FLENI, Buenos Aires, Argentina; Division of Neurology (K.J.B., E.L.P.), Department of Medicine, Groote Schuur Hospital, University of Cape Town, South Africa; Department RH-MDC-Immunology (M.R.B., M.M.), Reinier de Graaf Gasthuis, Delft, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (B.v.d.B., F.H.V.), Franciscus Gasthuis & Vlietland, Schiedam, the Netherlands; Department of Neurology (P.V.d.B.), University Hospital St. Luc, University of Louvain, Brussels, Belgium; Department of Neurology (J.B.), Saarland University Medical School, Homburg (previous hospital), and MVZ Pfalzklinikum (J.B.), Kusel, Germany (current hospital); Department of Neurology (M.B.), Leeds Teaching Hospitals, United Kingdom; Department of Neurology (C.C., V.N.-H.), Neuromuscular Unit, Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Department of Neurology (D.R.C.), Johns Hopkins University, Baltimore, MD; Institute of Infection, Immunity and Inflammation (A.D., H.J.W.), University of Glasgow, United Kingdom; National Hospital Copenhagen (C.D.d.l.C.), Copenhagen, Denmark; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Alberta, Canada; Nuffield Department of Clinical Neurosciences (J.F., S.R.), University of Oxford, John Radcliffe Hospital, United Kingdom; Department of Neurology (T.G.-S., J.P.), Hospital Clínico de Santiago, Spain; Neurology, Neuromuscular Diseases, Electromyography (J.M.G.), Hospital for Special Surgery; Weill Medical College of Cornell University (J.M.G.), New York; Department of Neurology (K.C.G., B.S.), Tufts University School of Medicine, Boston, MA; Department of Neurology (V.G.), Montefiore Medical Center, New York; Department of Neurology (R.D.M.H.), King's College Hospital, London, United Kingdom; Department of Neurology (H.-P.H.), University of Düsseldorf, Germany; Brain and Mind Centre (H.-P.H.), University of Sydney, Australia; Department of Neurology (H.-P.H.), Medical University of Vienna, Austria; Laboratory of Gut-Brain Signaling (I.H., I.J., Z.I., Q.D.M.), Laboratory Sciences and Services Division, icddr,b, Dhaka, Bangladesh; Department of Neurology (J.V.H., S.H.S.), Odense University Hospital, Denmark; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, United Kingdom; Department of Neurology (S. Karafiath), Utah Valley University, Orem; Department of Neurology (H.D.K.), University Health Network, University of Toronto, ON, Canada; Department of Neurology (R.P.K., K.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (N.K.), University of Vermont Medical Centre, Burlington; Department of Neurology (M.K., S. Kusunoki), Kindai University, Faculty of Medicine, Osaka, Japan; Department of Neurology (L.W.G.L., L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (S. Kuwabara), Chiba University, Japan; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (L.M.-A., L.Q.), Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, Spain; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, United Kingdom; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Research Hospital, Milan University, Italy; Department of Clinical Neurophysiology (Y.P.), Reference Centre for NMD, CHU Nantes, France; Department of Neurology (R.R.), Hospital Británico, Buenos Aires, Argentina; Department of Immunology (W.V.R., A.P.T.-G., R.H., B.C.J.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Department of Neurology (S.R.), Oxford University Hospitals NHS Foundation Trust, John Radcliffe Hospital; Department of Neurology (R.C.R.), Cambridge University Hospitals NHS Foundation Trust, Addenbrooke's Hospital, Cambridge Biomedical Campus, United Kingdom; Department of Medicine (N.S., T.C.-Y.), University of Malaya, Kuala Lumpur; Department of Neurology (S.H.S.), University of Southern Denmark, Odense; Department of Clinical Neurophysiology (H.T.), Aarhus University Hospital, Denmark; and Hospital Universitario Marques de Valdecilla (M.J.S.T.), Santander, Cantabria, Spain.; Doets AY; From the Departments of Neurology (S.E.L., S. Arends, B.v.d.B., A.Y.D., P.A.v.D., K.K., L.W.G.L., W.V.R., J.R., C.V., B.C.J.), and Viroscience (A.A.v.d.E.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Department of Neurology (H.A., T.H.), Aarhus University Hospital, Denmark; Department of Neurology (G.A.), Mental Health and Sensory Organs (NESMOS), Faculty of Medicine and Psychology, University of Rome 'Sapienza,' Sant' Andrea Hospital, Italy; Department of Neurology (S. Arends), Haga Teaching Hospital, The Hague, the Netherlands; Department of Neurology (S. Attarian), Reference Centre for NMD, CHU Timone, Marseille, France; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, FLENI, Buenos Aires, Argentina; Division of Neurology (K.J.B., E.L.P.), Department of Medicine, Groote Schuur Hospital, University of Cape Town, South Africa; Department RH-MDC-Immunology (M.R.B., M.M.), Reinier de Graaf Gasthuis, Delft, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (B.v.d.B., F.H.V.), Franciscus Gasthuis & Vlietland, Schiedam, the Netherlands; Department of Neurology (P.V.d.B.), University Hospital St. Luc, University of Louvain, Brussels, Belgium; Department of Neurology (J.B.), Saarland University Medical School, Homburg (previous hospital), and MVZ Pfalzklinikum (J.B.), Kusel, Germany (current hospital); Department of Neurology (M.B.), Leeds Teaching Hospitals, United Kingdom; Department of Neurology (C.C., V.N.-H.), Neuromuscular Unit, Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Department of Neurology (D.R.C.), Johns Hopkins University, Baltimore, MD; Institute of Infection, Immunity and Inflammation (A.D., H.J.W.), University of Glasgow, United Kingdom; National Hospital Copenhagen (C.D.d.l.C.), Copenhagen, Denmark; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Alberta, Canada; Nuffield Department of Clinical Neurosciences (J.F., S.R.), University of Oxford, John Radcliffe Hospital, United Kingdom; Department of Neurology (T.G.-S., J.P.), Hospital Clínico de Santiago, Spain; Neurology, Neuromuscular Diseases, Electromyography (J.M.G.), Hospital for Special Surgery; Weill Medical College of Cornell University (J.M.G.), New York; Department of Neurology (K.C.G., B.S.), Tufts University School of Medicine, Boston, MA; Department of Neurology (V.G.), Montefiore Medical Center, New York; Department of Neurology (R.D.M.H.), King's College Hospital, London, United Kingdom; Department of Neurology (H.-P.H.), University of Düsseldorf, Germany; Brain and Mind Centre (H.-P.H.), University of Sydney, Australia; Department of Neurology (H.-P.H.), Medical University of Vienna, Austria; Laboratory of Gut-Brain Signaling (I.H., I.J., Z.I., Q.D.M.), Laboratory Sciences and Services Division, icddr,b, Dhaka, Bangladesh; Department of Neurology (J.V.H., S.H.S.), Odense University Hospital, Denmark; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, United Kingdom; Department of Neurology (S. Karafiath), Utah Valley University, Orem; Department of Neurology (H.D.K.), University Health Network, University of Toronto, ON, Canada; Department of Neurology (R.P.K., K.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (N.K.), University of Vermont Medical Centre, Burlington; Department of Neurology (M.K., S. Kusunoki), Kindai University, Faculty of Medicine, Osaka, Japan; Department of Neurology (L.W.G.L., L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (S. Kuwabara), Chiba University, Japan; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (L.M.-A., L.Q.), Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, Spain; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, United Kingdom; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Research Hospital, Milan University, Italy; Department of Clinical Neurophysiology (Y.P.), Reference Centre for NMD, CHU Nantes, France; Department of Neurology (R.R.), Hospital Británico, Buenos Aires, Argentina; Department of Immunology (W.V.R., A.P.T.-G., R.H., B.C.J.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Department of Neurology (S.R.), Oxford University Hospitals NHS Foundation Trust, John Radcliffe Hospital; Department of Neurology (R.C.R.), Cambridge University Hospitals NHS Foundation Trust, Addenbrooke's Hospital, Cambridge Biomedical Campus, United Kingdom; Department of Medicine (N.S., T.C.-Y.), University of Malaya, Kuala Lumpur; Department of Neurology (S.H.S.), University of Southern Denmark, Odense; Department of Clinical Neurophysiology (H.T.), Aarhus University Hospital, Denmark; and Hospital Universitario Marques de Valdecilla (M.J.S.T.), Santander, Cantabria, Spain.; van Doorn PA; From the Departments of Neurology (S.E.L., S. Arends, B.v.d.B., A.Y.D., P.A.v.D., K.K., L.W.G.L., W.V.R., J.R., C.V., B.C.J.), and Viroscience (A.A.v.d.E.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Department of Neurology (H.A., T.H.), Aarhus University Hospital, Denmark; Department of Neurology (G.A.), Mental Health and Sensory Organs (NESMOS), Faculty of Medicine and Psychology, University of Rome 'Sapienza,' Sant' Andrea Hospital, Italy; Department of Neurology (S. Arends), Haga Teaching Hospital, The Hague, the Netherlands; Department of Neurology (S. Attarian), Reference Centre for NMD, CHU Timone, Marseille, France; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, FLENI, Buenos Aires, Argentina; Division of Neurology (K.J.B., E.L.P.), Department of Medicine, Groote Schuur Hospital, University of Cape Town, South Africa; Department RH-MDC-Immunology (M.R.B., M.M.), Reinier de Graaf Gasthuis, Delft, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (B.v.d.B., F.H.V.), Franciscus Gasthuis & Vlietland, Schiedam, the Netherlands; Department of Neurology (P.V.d.B.), University Hospital St. Luc, University of Louvain, Brussels, Belgium; Department of Neurology (J.B.), Saarland University Medical School, Homburg (previous hospital), and MVZ Pfalzklinikum (J.B.), Kusel, Germany (current hospital); Department of Neurology (M.B.), Leeds Teaching Hospitals, United Kingdom; Department of Neurology (C.C., V.N.-H.), Neuromuscular Unit, Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Department of Neurology (D.R.C.), Johns Hopkins University, Baltimore, MD; Institute of Infection, Immunity and Inflammation (A.D., H.J.W.), University of Glasgow, United Kingdom; National Hospital Copenhagen (C.D.d.l.C.), Copenhagen, Denmark; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Alberta, Canada; Nuffield Department of Clinical Neurosciences (J.F., S.R.), University of Oxford, John Radcliffe Hospital, United Kingdom; Department of Neurology (T.G.-S., J.P.), Hospital Clínico de Santiago, Spain; Neurology, Neuromuscular Diseases, Electromyography (J.M.G.), Hospital for Special Surgery; Weill Medical College of Cornell University (J.M.G.), New York; Department of Neurology (K.C.G., B.S.), Tufts University School of Medicine, Boston, MA; Department of Neurology (V.G.), Montefiore Medical Center, New York; Department of Neurology (R.D.M.H.), King's College Hospital, London, United Kingdom; Department of Neurology (H.-P.H.), University of Düsseldorf, Germany; Brain and Mind Centre (H.-P.H.), University of Sydney, Australia; Department of Neurology (H.-P.H.), Medical University of Vienna, Austria; Laboratory of Gut-Brain Signaling (I.H., I.J., Z.I., Q.D.M.), Laboratory Sciences and Services Division, icddr,b, Dhaka, Bangladesh; Department of Neurology (J.V.H., S.H.S.), Odense University Hospital, Denmark; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, United Kingdom; Department of Neurology (S. Karafiath), Utah Valley University, Orem; Department of Neurology (H.D.K.), University Health Network, University of Toronto, ON, Canada; Department of Neurology (R.P.K., K.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (N.K.), University of Vermont Medical Centre, Burlington; Department of Neurology (M.K., S. Kusunoki), Kindai University, Faculty of Medicine, Osaka, Japan; Department of Neurology (L.W.G.L., L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (S. Kuwabara), Chiba University, Japan; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (L.M.-A., L.Q.), Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, Spain; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, United Kingdom; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Research Hospital, Milan University, Italy; Department of Clinical Neurophysiology (Y.P.), Reference Centre for NMD, CHU Nantes, France; Department of Neurology (R.R.), Hospital Británico, Buenos Aires, Argentina; Department of Immunology (W.V.R., A.P.T.-G., R.H., B.C.J.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Department of Neurology (S.R.), Oxford University Hospitals NHS Foundation Trust, John Radcliffe Hospital; Department of Neurology (R.C.R.), Cambridge University Hospitals NHS Foundation Trust, Addenbrooke's Hospital, Cambridge Biomedical Campus, United Kingdom; Department of Medicine (N.S., T.C.-Y.), University of Malaya, Kuala Lumpur; Department of Neurology (S.H.S.), University of Southern Denmark, Odense; Department of Clinical Neurophysiology (H.T.), Aarhus University Hospital, Denmark; and Hospital Universitario Marques de Valdecilla (M.J.S.T.), Santander, Cantabria, Spain.; Dornonville de la Cour C; From the Departments of Neurology (S.E.L., S. Arends, B.v.d.B., A.Y.D., P.A.v.D., K.K., L.W.G.L., W.V.R., J.R., C.V., B.C.J.), and Viroscience (A.A.v.d.E.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Department of Neurology (H.A., T.H.), Aarhus University Hospital, Denmark; Department of Neurology (G.A.), Mental Health and Sensory Organs (NESMOS), Faculty of Medicine and Psychology, University of Rome 'Sapienza,' Sant' Andrea Hospital, Italy; Department of Neurology (S. Arends), Haga Teaching Hospital, The Hague, the Netherlands; Department of Neurology (S. Attarian), Reference Centre for NMD, CHU Timone, Marseille, France; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, FLENI, Buenos Aires, Argentina; Division of Neurology (K.J.B., E.L.P.), Department of Medicine, Groote Schuur Hospital, University of Cape Town, South Africa; Department RH-MDC-Immunology (M.R.B., M.M.), Reinier de Graaf Gasthuis, Delft, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (B.v.d.B., F.H.V.), Franciscus Gasthuis & Vlietland, Schiedam, the Netherlands; Department of Neurology (P.V.d.B.), University Hospital St. Luc, University of Louvain, Brussels, Belgium; Department of Neurology (J.B.), Saarland University Medical School, Homburg (previous hospital), and MVZ Pfalzklinikum (J.B.), Kusel, Germany (current hospital); Department of Neurology (M.B.), Leeds Teaching Hospitals, United Kingdom; Department of Neurology (C.C., V.N.-H.), Neuromuscular Unit, Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Department of Neurology (D.R.C.), Johns Hopkins University, Baltimore, MD; Institute of Infection, Immunity and Inflammation (A.D., H.J.W.), University of Glasgow, United Kingdom; National Hospital Copenhagen (C.D.d.l.C.), Copenhagen, Denmark; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Alberta, Canada; Nuffield Department of Clinical Neurosciences (J.F., S.R.), University of Oxford, John Radcliffe Hospital, United Kingdom; Department of Neurology (T.G.-S., J.P.), Hospital Clínico de Santiago, Spain; Neurology, Neuromuscular Diseases, Electromyography (J.M.G.), Hospital for Special Surgery; Weill Medical College of Cornell University (J.M.G.), New York; Department of Neurology (K.C.G., B.S.), Tufts University School of Medicine, Boston, MA; Department of Neurology (V.G.), Montefiore Medical Center, New York; Department of Neurology (R.D.M.H.), King's College Hospital, London, United Kingdom; Department of Neurology (H.-P.H.), University of Düsseldorf, Germany; Brain and Mind Centre (H.-P.H.), University of Sydney, Australia; Department of Neurology (H.-P.H.), Medical University of Vienna, Austria; Laboratory of Gut-Brain Signaling (I.H., I.J., Z.I., Q.D.M.), Laboratory Sciences and Services Division, icddr,b, Dhaka, Bangladesh; Department of Neurology (J.V.H., S.H.S.), Odense University Hospital, Denmark; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, United Kingdom; Department of Neurology (S. Karafiath), Utah Valley University, Orem; Department of Neurology (H.D.K.), University Health Network, University of Toronto, ON, Canada; Department of Neurology (R.P.K., K.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (N.K.), University of Vermont Medical Centre, Burlington; Department of Neurology (M.K., S. Kusunoki), Kindai University, Faculty of Medicine, Osaka, Japan; Department of Neurology (L.W.G.L., L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (S. Kuwabara), Chiba University, Japan; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (L.M.-A., L.Q.), Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, Spain; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, United Kingdom; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Research Hospital, Milan University, Italy; Department of Clinical Neurophysiology (Y.P.), Reference Centre for NMD, CHU Nantes, France; Department of Neurology (R.R.), Hospital Británico, Buenos Aires, Argentina; Department of Immunology (W.V.R., A.P.T.-G., R.H., B.C.J.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Department of Neurology (S.R.), Oxford University Hospitals NHS Foundation Trust, John Radcliffe Hospital; Department of Neurology (R.C.R.), Cambridge University Hospitals NHS Foundation Trust, Addenbrooke's Hospital, Cambridge Biomedical Campus, United Kingdom; Department of Medicine (N.S., T.C.-Y.), University of Malaya, Kuala Lumpur; Department of Neurology (S.H.S.), University of Southern Denmark, Odense; Department of Clinical Neurophysiology (H.T.), Aarhus University Hospital, Denmark; and Hospital Universitario Marques de Valdecilla (M.J.S.T.), Santander, Cantabria, Spain.; Feasby TE; From the Departments of Neurology (S.E.L., S. Arends, B.v.d.B., A.Y.D., P.A.v.D., K.K., L.W.G.L., W.V.R., J.R., C.V., B.C.J.), and Viroscience (A.A.v.d.E.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Department of Neurology (H.A., T.H.), Aarhus University Hospital, Denmark; Department of Neurology (G.A.), Mental Health and Sensory Organs (NESMOS), Faculty of Medicine and Psychology, University of Rome 'Sapienza,' Sant' Andrea Hospital, Italy; Department of Neurology (S. Arends), Haga Teaching Hospital, The Hague, the Netherlands; Department of Neurology (S. Attarian), Reference Centre for NMD, CHU Timone, Marseille, France; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, FLENI, Buenos Aires, Argentina; Division of Neurology (K.J.B., E.L.P.), Department of Medicine, Groote Schuur Hospital, University of Cape Town, South Africa; Department RH-MDC-Immunology (M.R.B., M.M.), Reinier de Graaf Gasthuis, Delft, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (B.v.d.B., F.H.V.), Franciscus Gasthuis & Vlietland, Schiedam, the Netherlands; Department of Neurology (P.V.d.B.), University Hospital St. Luc, University of Louvain, Brussels, Belgium; Department of Neurology (J.B.), Saarland University Medical School, Homburg (previous hospital), and MVZ Pfalzklinikum (J.B.), Kusel, Germany (current hospital); Department of Neurology (M.B.), Leeds Teaching Hospitals, United Kingdom; Department of Neurology (C.C., V.N.-H.), Neuromuscular Unit, Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Department of Neurology (D.R.C.), Johns Hopkins University, Baltimore, MD; Institute of Infection, Immunity and Inflammation (A.D., H.J.W.), University of Glasgow, United Kingdom; National Hospital Copenhagen (C.D.d.l.C.), Copenhagen, Denmark; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Alberta, Canada; Nuffield Department of Clinical Neurosciences (J.F., S.R.), University of Oxford, John Radcliffe Hospital, United Kingdom; Department of Neurology (T.G.-S., J.P.), Hospital Clínico de Santiago, Spain; Neurology, Neuromuscular Diseases, Electromyography (J.M.G.), Hospital for Special Surgery; Weill Medical College of Cornell University (J.M.G.), New York; Department of Neurology (K.C.G., B.S.), Tufts University School of Medicine, Boston, MA; Department of Neurology (V.G.), Montefiore Medical Center, New York; Department of Neurology (R.D.M.H.), King's College Hospital, London, United Kingdom; Department of Neurology (H.-P.H.), University of Düsseldorf, Germany; Brain and Mind Centre (H.-P.H.), University of Sydney, Australia; Department of Neurology (H.-P.H.), Medical University of Vienna, Austria; Laboratory of Gut-Brain Signaling (I.H., I.J., Z.I., Q.D.M.), Laboratory Sciences and Services Division, icddr,b, Dhaka, Bangladesh; Department of Neurology (J.V.H., S.H.S.), Odense University Hospital, Denmark; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, United Kingdom; Department of Neurology (S. Karafiath), Utah Valley University, Orem; Department of Neurology (H.D.K.), University Health Network, University of Toronto, ON, Canada; Department of Neurology (R.P.K., K.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (N.K.), University of Vermont Medical Centre, Burlington; Department of Neurology (M.K., S. Kusunoki), Kindai University, Faculty of Medicine, Osaka, Japan; Department of Neurology (L.W.G.L., L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (S. Kuwabara), Chiba University, Japan; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (L.M.-A., L.Q.), Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, Spain; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, United Kingdom; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Research Hospital, Milan University, Italy; Department of Clinical Neurophysiology (Y.P.), Reference Centre for NMD, CHU Nantes, France; Department of Neurology (R.R.), Hospital Británico, Buenos Aires, Argentina; Department of Immunology (W.V.R., A.P.T.-G., R.H., B.C.J.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Department of Neurology (S.R.), Oxford University Hospitals NHS Foundation Trust, John Radcliffe Hospital; Department of Neurology (R.C.R.), Cambridge University Hospitals NHS Foundation Trust, Addenbrooke's Hospital, Cambridge Biomedical Campus, United Kingdom; Department of Medicine (N.S., T.C.-Y.), University of Malaya, Kuala Lumpur; Department of Neurology (S.H.S.), University of Southern Denmark, Odense; Department of Clinical Neurophysiology (H.T.), Aarhus University Hospital, Denmark; and Hospital Universitario Marques de Valdecilla (M.J.S.T.), Santander, Cantabria, Spain.; Fehmi J; From the Departments of Neurology (S.E.L., S. Arends, B.v.d.B., A.Y.D., P.A.v.D., K.K., L.W.G.L., W.V.R., J.R., C.V., B.C.J.), and Viroscience (A.A.v.d.E.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Department of Neurology (H.A., T.H.), Aarhus University Hospital, Denmark; Department of Neurology (G.A.), Mental Health and Sensory Organs (NESMOS), Faculty of Medicine and Psychology, University of Rome 'Sapienza,' Sant' Andrea Hospital, Italy; Department of Neurology (S. Arends), Haga Teaching Hospital, The Hague, the Netherlands; Department of Neurology (S. Attarian), Reference Centre for NMD, CHU Timone, Marseille, France; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, FLENI, Buenos Aires, Argentina; Division of Neurology (K.J.B., E.L.P.), Department of Medicine, Groote Schuur Hospital, University of Cape Town, South Africa; Department RH-MDC-Immunology (M.R.B., M.M.), Reinier de Graaf Gasthuis, Delft, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (B.v.d.B., F.H.V.), Franciscus Gasthuis & Vlietland, Schiedam, the Netherlands; Department of Neurology (P.V.d.B.), University Hospital St. Luc, University of Louvain, Brussels, Belgium; Department of Neurology (J.B.), Saarland University Medical School, Homburg (previous hospital), and MVZ Pfalzklinikum (J.B.), Kusel, Germany (current hospital); Department of Neurology (M.B.), Leeds Teaching Hospitals, United Kingdom; Department of Neurology (C.C., V.N.-H.), Neuromuscular Unit, Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Department of Neurology (D.R.C.), Johns Hopkins University, Baltimore, MD; Institute of Infection, Immunity and Inflammation (A.D., H.J.W.), University of Glasgow, United Kingdom; National Hospital Copenhagen (C.D.d.l.C.), Copenhagen, Denmark; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Alberta, Canada; Nuffield Department of Clinical Neurosciences (J.F., S.R.), University of Oxford, John Radcliffe Hospital, United Kingdom; Department of Neurology (T.G.-S., J.P.), Hospital Clínico de Santiago, Spain; Neurology, Neuromuscular Diseases, Electromyography (J.M.G.), Hospital for Special Surgery; Weill Medical College of Cornell University (J.M.G.), New York; Department of Neurology (K.C.G., B.S.), Tufts University School of Medicine, Boston, MA; Department of Neurology (V.G.), Montefiore Medical Center, New York; Department of Neurology (R.D.M.H.), King's College Hospital, London, United Kingdom; Department of Neurology (H.-P.H.), University of Düsseldorf, Germany; Brain and Mind Centre (H.-P.H.), University of Sydney, Australia; Department of Neurology (H.-P.H.), Medical University of Vienna, Austria; Laboratory of Gut-Brain Signaling (I.H., I.J., Z.I., Q.D.M.), Laboratory Sciences and Services Division, icddr,b, Dhaka, Bangladesh; Department of Neurology (J.V.H., S.H.S.), Odense University Hospital, Denmark; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, United Kingdom; Department of Neurology (S. Karafiath), Utah Valley University, Orem; Department of Neurology (H.D.K.), University Health Network, University of Toronto, ON, Canada; Department of Neurology (R.P.K., K.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (N.K.), University of Vermont Medical Centre, Burlington; Department of Neurology (M.K., S. Kusunoki), Kindai University, Faculty of Medicine, Osaka, Japan; Department of Neurology (L.W.G.L., L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (S. Kuwabara), Chiba University, Japan; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (L.M.-A., L.Q.), Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, Spain; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, United Kingdom; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Research Hospital, Milan University, Italy; Department of Clinical Neurophysiology (Y.P.), Reference Centre for NMD, CHU Nantes, France; Department of Neurology (R.R.), Hospital Británico, Buenos Aires, Argentina; Department of Immunology (W.V.R., A.P.T.-G., R.H., B.C.J.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Department of Neurology (S.R.), Oxford University Hospitals NHS Foundation Trust, John Radcliffe Hospital; Department of Neurology (R.C.R.), Cambridge University Hospitals NHS Foundation Trust, Addenbrooke's Hospital, Cambridge Biomedical Campus, United Kingdom; Department of Medicine (N.S., T.C.-Y.), University of Malaya, Kuala Lumpur; Department of Neurology (S.H.S.), University of Southern Denmark, Odense; Department of Clinical Neurophysiology (H.T.), Aarhus University Hospital, Denmark; and Hospital Universitario Marques de Valdecilla (M.J.S.T.), Santander, Cantabria, Spain.; Garcia-Sobrino T; From the Departments of Neurology (S.E.L., S. Arends, B.v.d.B., A.Y.D., P.A.v.D., K.K., L.W.G.L., W.V.R., J.R., C.V., B.C.J.), and Viroscience (A.A.v.d.E.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Department of Neurology (H.A., T.H.), Aarhus University Hospital, Denmark; Department of Neurology (G.A.), Mental Health and Sensory Organs (NESMOS), Faculty of Medicine and Psychology, University of Rome 'Sapienza,' Sant' Andrea Hospital, Italy; Department of Neurology (S. Arends), Haga Teaching Hospital, The Hague, the Netherlands; Department of Neurology (S. Attarian), Reference Centre for NMD, CHU Timone, Marseille, France; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, FLENI, Buenos Aires, Argentina; Division of Neurology (K.J.B., E.L.P.), Department of Medicine, Groote Schuur Hospital, University of Cape Town, South Africa; Department RH-MDC-Immunology (M.R.B., M.M.), Reinier de Graaf Gasthuis, Delft, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (B.v.d.B., F.H.V.), Franciscus Gasthuis & Vlietland, Schiedam, the Netherlands; Department of Neurology (P.V.d.B.), University Hospital St. Luc, University of Louvain, Brussels, Belgium; Department of Neurology (J.B.), Saarland University Medical School, Homburg (previous hospital), and MVZ Pfalzklinikum (J.B.), Kusel, Germany (current hospital); Department of Neurology (M.B.), Leeds Teaching Hospitals, United Kingdom; Department of Neurology (C.C., V.N.-H.), Neuromuscular Unit, Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Department of Neurology (D.R.C.), Johns Hopkins University, Baltimore, MD; Institute of Infection, Immunity and Inflammation (A.D., H.J.W.), University of Glasgow, United Kingdom; National Hospital Copenhagen (C.D.d.l.C.), Copenhagen, Denmark; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Alberta, Canada; Nuffield Department of Clinical Neurosciences (J.F., S.R.), University of Oxford, John Radcliffe Hospital, United Kingdom; Department of Neurology (T.G.-S., J.P.), Hospital Clínico de Santiago, Spain; Neurology, Neuromuscular Diseases, Electromyography (J.M.G.), Hospital for Special Surgery; Weill Medical College of Cornell University (J.M.G.), New York; Department of Neurology (K.C.G., B.S.), Tufts University School of Medicine, Boston, MA; Department of Neurology (V.G.), Montefiore Medical Center, New York; Department of Neurology (R.D.M.H.), King's College Hospital, London, United Kingdom; Department of Neurology (H.-P.H.), University of Düsseldorf, Germany; Brain and Mind Centre (H.-P.H.), University of Sydney, Australia; Department of Neurology (H.-P.H.), Medical University of Vienna, Austria; Laboratory of Gut-Brain Signaling (I.H., I.J., Z.I., Q.D.M.), Laboratory Sciences and Services Division, icddr,b, Dhaka, Bangladesh; Department of Neurology (J.V.H., S.H.S.), Odense University Hospital, Denmark; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, United Kingdom; Department of Neurology (S. Karafiath), Utah Valley University, Orem; Department of Neurology (H.D.K.), University Health Network, University of Toronto, ON, Canada; Department of Neurology (R.P.K., K.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (N.K.), University of Vermont Medical Centre, Burlington; Department of Neurology (M.K., S. Kusunoki), Kindai University, Faculty of Medicine, Osaka, Japan; Department of Neurology (L.W.G.L., L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (S. Kuwabara), Chiba University, Japan; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (L.M.-A., L.Q.), Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, Spain; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, United Kingdom; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Research Hospital, Milan University, Italy; Department of Clinical Neurophysiology (Y.P.), Reference Centre for NMD, CHU Nantes, France; Department of Neurology (R.R.), Hospital Británico, Buenos Aires, Argentina; Department of Immunology (W.V.R., A.P.T.-G., R.H., B.C.J.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Department of Neurology (S.R.), Oxford University Hospitals NHS Foundation Trust, John Radcliffe Hospital; Department of Neurology (R.C.R.), Cambridge University Hospitals NHS Foundation Trust, Addenbrooke's Hospital, Cambridge Biomedical Campus, United Kingdom; Department of Medicine (N.S., T.C.-Y.), University of Malaya, Kuala Lumpur; Department of Neurology (S.H.S.), University of Southern Denmark, Odense; Department of Clinical Neurophysiology (H.T.), Aarhus University Hospital, Denmark; and Hospital Universitario Marques de Valdecilla (M.J.S.T.), Santander, Cantabria, Spain.; Goldstein JM; From the Departments of Neurology (S.E.L., S. Arends, B.v.d.B., A.Y.D., P.A.v.D., K.K., L.W.G.L., W.V.R., J.R., C.V., B.C.J.), and Viroscience (A.A.v.d.E.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Department of Neurology (H.A., T.H.), Aarhus University Hospital, Denmark; Department of Neurology (G.A.), Mental Health and Sensory Organs (NESMOS), Faculty of Medicine and Psychology, University of Rome 'Sapienza,' Sant' Andrea Hospital, Italy; Department of Neurology (S. Arends), Haga Teaching Hospital, The Hague, the Netherlands; Department of Neurology (S. Attarian), Reference Centre for NMD, CHU Timone, Marseille, France; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, FLENI, Buenos Aires, Argentina; Division of Neurology (K.J.B., E.L.P.), Department of Medicine, Groote Schuur Hospital, University of Cape Town, South Africa; Department RH-MDC-Immunology (M.R.B., M.M.), Reinier de Graaf Gasthuis, Delft, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (B.v.d.B., F.H.V.), Franciscus Gasthuis & Vlietland, Schiedam, the Netherlands; Department of Neurology (P.V.d.B.), University Hospital St. Luc, University of Louvain, Brussels, Belgium; Department of Neurology (J.B.), Saarland University Medical School, Homburg (previous hospital), and MVZ Pfalzklinikum (J.B.), Kusel, Germany (current hospital); Department of Neurology (M.B.), Leeds Teaching Hospitals, United Kingdom; Department of Neurology (C.C., V.N.-H.), Neuromuscular Unit, Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Department of Neurology (D.R.C.), Johns Hopkins University, Baltimore, MD; Institute of Infection, Immunity and Inflammation (A.D., H.J.W.), University of Glasgow, United Kingdom; National Hospital Copenhagen (C.D.d.l.C.), Copenhagen, Denmark; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Alberta, Canada; Nuffield Department of Clinical Neurosciences (J.F., S.R.), University of Oxford, John Radcliffe Hospital, United Kingdom; Department of Neurology (T.G.-S., J.P.), Hospital Clínico de Santiago, Spain; Neurology, Neuromuscular Diseases, Electromyography (J.M.G.), Hospital for Special Surgery; Weill Medical College of Cornell University (J.M.G.), New York; Department of Neurology (K.C.G., B.S.), Tufts University School of Medicine, Boston, MA; Department of Neurology (V.G.), Montefiore Medical Center, New York; Department of Neurology (R.D.M.H.), King's College Hospital, London, United Kingdom; Department of Neurology (H.-P.H.), University of Düsseldorf, Germany; Brain and Mind Centre (H.-P.H.), University of Sydney, Australia; Department of Neurology (H.-P.H.), Medical University of Vienna, Austria; Laboratory of Gut-Brain Signaling (I.H., I.J., Z.I., Q.D.M.), Laboratory Sciences and Services Division, icddr,b, Dhaka, Bangladesh; Department of Neurology (J.V.H., S.H.S.), Odense University Hospital, Denmark; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, United Kingdom; Department of Neurology (S. Karafiath), Utah Valley University, Orem; Department of Neurology (H.D.K.), University Health Network, University of Toronto, ON, Canada; Department of Neurology (R.P.K., K.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (N.K.), University of Vermont Medical Centre, Burlington; Department of Neurology (M.K., S. Kusunoki), Kindai University, Faculty of Medicine, Osaka, Japan; Department of Neurology (L.W.G.L., L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (S. Kuwabara), Chiba University, Japan; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (L.M.-A., L.Q.), Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, Spain; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, United Kingdom; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Research Hospital, Milan University, Italy; Department of Clinical Neurophysiology (Y.P.), Reference Centre for NMD, CHU Nantes, France; Department of Neurology (R.R.), Hospital Británico, Buenos Aires, Argentina; Department of Immunology (W.V.R., A.P.T.-G., R.H., B.C.J.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Department of Neurology (S.R.), Oxford University Hospitals NHS Foundation Trust, John Radcliffe Hospital; Department of Neurology (R.C.R.), Cambridge University Hospitals NHS Foundation Trust, Addenbrooke's Hospital, Cambridge Biomedical Campus, United Kingdom; Department of Medicine (N.S., T.C.-Y.), University of Malaya, Kuala Lumpur; Department of Neurology (S.H.S.), University of Southern Denmark, Odense; Department of Clinical Neurophysiology (H.T.), Aarhus University Hospital, Denmark; and Hospital Universitario Marques de Valdecilla (M.J.S.T.), Santander, Cantabria, Spain.; Gorson KC; From the Departments of Neurology (S.E.L., S. Arends, B.v.d.B., A.Y.D., P.A.v.D., K.K., L.W.G.L., W.V.R., J.R., C.V., B.C.J.), and Viroscience (A.A.v.d.E.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Department of Neurology (H.A., T.H.), Aarhus University Hospital, Denmark; Department of Neurology (G.A.), Mental Health and Sensory Organs (NESMOS), Faculty of Medicine and Psychology, University of Rome 'Sapienza,' Sant' Andrea Hospital, Italy; Department of Neurology (S. Arends), Haga Teaching Hospital, The Hague, the Netherlands; Department of Neurology (S. Attarian), Reference Centre for NMD, CHU Timone, Marseille, France; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, FLENI, Buenos Aires, Argentina; Division of Neurology (K.J.B., E.L.P.), Department of Medicine, Groote Schuur Hospital, University of Cape Town, South Africa; Department RH-MDC-Immunology (M.R.B., M.M.), Reinier de Graaf Gasthuis, Delft, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (B.v.d.B., F.H.V.), Franciscus Gasthuis & Vlietland, Schiedam, the Netherlands; Department of Neurology (P.V.d.B.), University Hospital St. Luc, University of Louvain, Brussels, Belgium; Department of Neurology (J.B.), Saarland University Medical School, Homburg (previous hospital), and MVZ Pfalzklinikum (J.B.), Kusel, Germany (current hospital); Department of Neurology (M.B.), Leeds Teaching Hospitals, United Kingdom; Department of Neurology (C.C., V.N.-H.), Neuromuscular Unit, Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Department of Neurology (D.R.C.), Johns Hopkins University, Baltimore, MD; Institute of Infection, Immunity and Inflammation (A.D., H.J.W.), University of Glasgow, United Kingdom; National Hospital Copenhagen (C.D.d.l.C.), Copenhagen, Denmark; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Alberta, Canada; Nuffield Department of Clinical Neurosciences (J.F., S.R.), University of Oxford, John Radcliffe Hospital, United Kingdom; Department of Neurology (T.G.-S., J.P.), Hospital Clínico de Santiago, Spain; Neurology, Neuromuscular Diseases, Electromyography (J.M.G.), Hospital for Special Surgery; Weill Medical College of Cornell University (J.M.G.), New York; Department of Neurology (K.C.G., B.S.), Tufts University School of Medicine, Boston, MA; Department of Neurology (V.G.), Montefiore Medical Center, New York; Department of Neurology (R.D.M.H.), King's College Hospital, London, United Kingdom; Department of Neurology (H.-P.H.), University of Düsseldorf, Germany; Brain and Mind Centre (H.-P.H.), University of Sydney, Australia; Department of Neurology (H.-P.H.), Medical University of Vienna, Austria; Laboratory of Gut-Brain Signaling (I.H., I.J., Z.I., Q.D.M.), Laboratory Sciences and Services Division, icddr,b, Dhaka, Bangladesh; Department of Neurology (J.V.H., S.H.S.), Odense University Hospital, Denmark; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, United Kingdom; Department of Neurology (S. Karafiath), Utah Valley University, Orem; Department of Neurology (H.D.K.), University Health Network, University of Toronto, ON, Canada; Department of Neurology (R.P.K., K.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (N.K.), University of Vermont Medical Centre, Burlington; Department of Neurology (M.K., S. Kusunoki), Kindai University, Faculty of Medicine, Osaka, Japan; Department of Neurology (L.W.G.L., L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (S. Kuwabara), Chiba University, Japan; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (L.M.-A., L.Q.), Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, Spain; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, United Kingdom; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Research Hospital, Milan University, Italy; Department of Clinical Neurophysiology (Y.P.), Reference Centre for NMD, CHU Nantes, France; Department of Neurology (R.R.), Hospital Británico, Buenos Aires, Argentina; Department of Immunology (W.V.R., A.P.T.-G., R.H., B.C.J.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Department of Neurology (S.R.), Oxford University Hospitals NHS Foundation Trust, John Radcliffe Hospital; Department of Neurology (R.C.R.), Cambridge University Hospitals NHS Foundation Trust, Addenbrooke's Hospital, Cambridge Biomedical Campus, United Kingdom; Department of Medicine (N.S., T.C.-Y.), University of Malaya, Kuala Lumpur; Department of Neurology (S.H.S.), University of Southern Denmark, Odense; Department of Clinical Neurophysiology (H.T.), Aarhus University Hospital, Denmark; and Hospital Universitario Marques de Valdecilla (M.J.S.T.), Santander, Cantabria, Spain.; Granit V; From the Departments of Neurology (S.E.L., S. Arends, B.v.d.B., A.Y.D., P.A.v.D., K.K., L.W.G.L., W.V.R., J.R., C.V., B.C.J.), and Viroscience (A.A.v.d.E.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Department of Neurology (H.A., T.H.), Aarhus University Hospital, Denmark; Department of Neurology (G.A.), Mental Health and Sensory Organs (NESMOS), Faculty of Medicine and Psychology, University of Rome 'Sapienza,' Sant' Andrea Hospital, Italy; Department of Neurology (S. Arends), Haga Teaching Hospital, The Hague, the Netherlands; Department of Neurology (S. Attarian), Reference Centre for NMD, CHU Timone, Marseille, France; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, FLENI, Buenos Aires, Argentina; Division of Neurology (K.J.B., E.L.P.), Department of Medicine, Groote Schuur Hospital, University of Cape Town, South Africa; Department RH-MDC-Immunology (M.R.B., M.M.), Reinier de Graaf Gasthuis, Delft, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (B.v.d.B., F.H.V.), Franciscus Gasthuis & Vlietland, Schiedam, the Netherlands; Department of Neurology (P.V.d.B.), University Hospital St. Luc, University of Louvain, Brussels, Belgium; Department of Neurology (J.B.), Saarland University Medical School, Homburg (previous hospital), and MVZ Pfalzklinikum (J.B.), Kusel, Germany (current hospital); Department of Neurology (M.B.), Leeds Teaching Hospitals, United Kingdom; Department of Neurology (C.C., V.N.-H.), Neuromuscular Unit, Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Department of Neurology (D.R.C.), Johns Hopkins University, Baltimore, MD; Institute of Infection, Immunity and Inflammation (A.D., H.J.W.), University of Glasgow, United Kingdom; National Hospital Copenhagen (C.D.d.l.C.), Copenhagen, Denmark; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Alberta, Canada; Nuffield Department of Clinical Neurosciences (J.F., S.R.), University of Oxford, John Radcliffe Hospital, United Kingdom; Department of Neurology (T.G.-S., J.P.), Hospital Clínico de Santiago, Spain; Neurology, Neuromuscular Diseases, Electromyography (J.M.G.), Hospital for Special Surgery; Weill Medical College of Cornell University (J.M.G.), New York; Department of Neurology (K.C.G., B.S.), Tufts University School of Medicine, Boston, MA; Department of Neurology (V.G.), Montefiore Medical Center, New York; Department of Neurology (R.D.M.H.), King's College Hospital, London, United Kingdom; Department of Neurology (H.-P.H.), University of Düsseldorf, Germany; Brain and Mind Centre (H.-P.H.), University of Sydney, Australia; Department of Neurology (H.-P.H.), Medical University of Vienna, Austria; Laboratory of Gut-Brain Signaling (I.H., I.J., Z.I., Q.D.M.), Laboratory Sciences and Services Division, icddr,b, Dhaka, Bangladesh; Department of Neurology (J.V.H., S.H.S.), Odense University Hospital, Denmark; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, United Kingdom; Department of Neurology (S. Karafiath), Utah Valley University, Orem; Department of Neurology (H.D.K.), University Health Network, University of Toronto, ON, Canada; Department of Neurology (R.P.K., K.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (N.K.), University of Vermont Medical Centre, Burlington; Department of Neurology (M.K., S. Kusunoki), Kindai University, Faculty of Medicine, Osaka, Japan; Department of Neurology (L.W.G.L., L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (S. Kuwabara), Chiba University, Japan; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (L.M.-A., L.Q.), Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, Spain; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, United Kingdom; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Research Hospital, Milan University, Italy; Department of Clinical Neurophysiology (Y.P.), Reference Centre for NMD, CHU Nantes, France; Department of Neurology (R.R.), Hospital Británico, Buenos Aires, Argentina; Department of Immunology (W.V.R., A.P.T.-G., R.H., B.C.J.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Department of Neurology (S.R.), Oxford University Hospitals NHS Foundation Trust, John Radcliffe Hospital; Department of Neurology (R.C.R.), Cambridge University Hospitals NHS Foundation Trust, Addenbrooke's Hospital, Cambridge Biomedical Campus, United Kingdom; Department of Medicine (N.S., T.C.-Y.), University of Malaya, Kuala Lumpur; Department of Neurology (S.H.S.), University of Southern Denmark, Odense; Department of Clinical Neurophysiology (H.T.), Aarhus University Hospital, Denmark; and Hospital Universitario Marques de Valdecilla (M.J.S.T.), Santander, Cantabria, Spain.; Hadden RDM; From the Departments of Neurology (S.E.L., S. Arends, B.v.d.B., A.Y.D., P.A.v.D., K.K., L.W.G.L., W.V.R., J.R., C.V., B.C.J.), and Viroscience (A.A.v.d.E.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Department of Neurology (H.A., T.H.), Aarhus University Hospital, Denmark; Department of Neurology (G.A.), Mental Health and Sensory Organs (NESMOS), Faculty of Medicine and Psychology, University of Rome 'Sapienza,' Sant' Andrea Hospital, Italy; Department of Neurology (S. Arends), Haga Teaching Hospital, The Hague, the Netherlands; Department of Neurology (S. Attarian), Reference Centre for NMD, CHU Timone, Marseille, France; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, FLENI, Buenos Aires, Argentina; Division of Neurology (K.J.B., E.L.P.), Department of Medicine, Groote Schuur Hospital, University of Cape Town, South Africa; Department RH-MDC-Immunology (M.R.B., M.M.), Reinier de Graaf Gasthuis, Delft, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (B.v.d.B., F.H.V.), Franciscus Gasthuis & Vlietland, Schiedam, the Netherlands; Department of Neurology (P.V.d.B.), University Hospital St. Luc, University of Louvain, Brussels, Belgium; Department of Neurology (J.B.), Saarland University Medical School, Homburg (previous hospital), and MVZ Pfalzklinikum (J.B.), Kusel, Germany (current hospital); Department of Neurology (M.B.), Leeds Teaching Hospitals, United Kingdom; Department of Neurology (C.C., V.N.-H.), Neuromuscular Unit, Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Department of Neurology (D.R.C.), Johns Hopkins University, Baltimore, MD; Institute of Infection, Immunity and Inflammation (A.D., H.J.W.), University of Glasgow, United Kingdom; National Hospital Copenhagen (C.D.d.l.C.), Copenhagen, Denmark; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Alberta, Canada; Nuffield Department of Clinical Neurosciences (J.F., S.R.), University of Oxford, John Radcliffe Hospital, United Kingdom; Department of Neurology (T.G.-S., J.P.), Hospital Clínico de Santiago, Spain; Neurology, Neuromuscular Diseases, Electromyography (J.M.G.), Hospital for Special Surgery; Weill Medical College of Cornell University (J.M.G.), New York; Department of Neurology (K.C.G., B.S.), Tufts University School of Medicine, Boston, MA; Department of Neurology (V.G.), Montefiore Medical Center, New York; Department of Neurology (R.D.M.H.), King's College Hospital, London, United Kingdom; Department of Neurology (H.-P.H.), University of Düsseldorf, Germany; Brain and Mind Centre (H.-P.H.), University of Sydney, Australia; Department of Neurology (H.-P.H.), Medical University of Vienna, Austria; Laboratory of Gut-Brain Signaling (I.H., I.J., Z.I., Q.D.M.), Laboratory Sciences and Services Division, icddr,b, Dhaka, Bangladesh; Department of Neurology (J.V.H., S.H.S.), Odense University Hospital, Denmark; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, United Kingdom; Department of Neurology (S. Karafiath), Utah Valley University, Orem; Department of Neurology (H.D.K.), University Health Network, University of Toronto, ON, Canada; Department of Neurology (R.P.K., K.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (N.K.), University of Vermont Medical Centre, Burlington; Department of Neurology (M.K., S. Kusunoki), Kindai University, Faculty of Medicine, Osaka, Japan; Department of Neurology (L.W.G.L., L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (S. Kuwabara), Chiba University, Japan; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (L.M.-A., L.Q.), Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, Spain; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, United Kingdom; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Research Hospital, Milan University, Italy; Department of Clinical Neurophysiology (Y.P.), Reference Centre for NMD, CHU Nantes, France; Department of Neurology (R.R.), Hospital Británico, Buenos Aires, Argentina; Department of Immunology (W.V.R., A.P.T.-G., R.H., B.C.J.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Department of Neurology (S.R.), Oxford University Hospitals NHS Foundation Trust, John Radcliffe Hospital; Department of Neurology (R.C.R.), Cambridge University Hospitals NHS Foundation Trust, Addenbrooke's Hospital, Cambridge Biomedical Campus, United Kingdom; Department of Medicine (N.S., T.C.-Y.), University of Malaya, Kuala Lumpur; Department of Neurology (S.H.S.), University of Southern Denmark, Odense; Department of Clinical Neurophysiology (H.T.), Aarhus University Hospital, Denmark; and Hospital Universitario Marques de Valdecilla (M.J.S.T.), Santander, Cantabria, Spain.; Harbo T; From the Departments of Neurology (S.E.L., S. Arends, B.v.d.B., A.Y.D., P.A.v.D., K.K., L.W.G.L., W.V.R., J.R., C.V., B.C.J.), and Viroscience (A.A.v.d.E.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Department of Neurology (H.A., T.H.), Aarhus University Hospital, Denmark; Department of Neurology (G.A.), Mental Health and Sensory Organs (NESMOS), Faculty of Medicine and Psychology, University of Rome 'Sapienza,' Sant' Andrea Hospital, Italy; Department of Neurology (S. Arends), Haga Teaching Hospital, The Hague, the Netherlands; Department of Neurology (S. Attarian), Reference Centre for NMD, CHU Timone, Marseille, France; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, FLENI, Buenos Aires, Argentina; Division of Neurology (K.J.B., E.L.P.), Department of Medicine, Groote Schuur Hospital, University of Cape Town, South Africa; Department RH-MDC-Immunology (M.R.B., M.M.), Reinier de Graaf Gasthuis, Delft, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (B.v.d.B., F.H.V.), Franciscus Gasthuis & Vlietland, Schiedam, the Netherlands; Department of Neurology (P.V.d.B.), University Hospital St. Luc, University of Louvain, Brussels, Belgium; Department of Neurology (J.B.), Saarland University Medical School, Homburg (previous hospital), and MVZ Pfalzklinikum (J.B.), Kusel, Germany (current hospital); Department of Neurology (M.B.), Leeds Teaching Hospitals, United Kingdom; Department of Neurology (C.C., V.N.-H.), Neuromuscular Unit, Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Department of Neurology (D.R.C.), Johns Hopkins University, Baltimore, MD; Institute of Infection, Immunity and Inflammation (A.D., H.J.W.), University of Glasgow, United Kingdom; National Hospital Copenhagen (C.D.d.l.C.), Copenhagen, Denmark; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Alberta, Canada; Nuffield Department of Clinical Neurosciences (J.F., S.R.), University of Oxford, John Radcliffe Hospital, United Kingdom; Department of Neurology (T.G.-S., J.P.), Hospital Clínico de Santiago, Spain; Neurology, Neuromuscular Diseases, Electromyography (J.M.G.), Hospital for Special Surgery; Weill Medical College of Cornell University (J.M.G.), New York; Department of Neurology (K.C.G., B.S.), Tufts University School of Medicine, Boston, MA; Department of Neurology (V.G.), Montefiore Medical Center, New York; Department of Neurology (R.D.M.H.), King's College Hospital, London, United Kingdom; Department of Neurology (H.-P.H.), University of Düsseldorf, Germany; Brain and Mind Centre (H.-P.H.), University of Sydney, Australia; Department of Neurology (H.-P.H.), Medical University of Vienna, Austria; Laboratory of Gut-Brain Signaling (I.H., I.J., Z.I., Q.D.M.), Laboratory Sciences and Services Division, icddr,b, Dhaka, Bangladesh; Department of Neurology (J.V.H., S.H.S.), Odense University Hospital, Denmark; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, United Kingdom; Department of Neurology (S. Karafiath), Utah Valley University, Orem; Department of Neurology (H.D.K.), University Health Network, University of Toronto, ON, Canada; Department of Neurology (R.P.K., K.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (N.K.), University of Vermont Medical Centre, Burlington; Department of Neurology (M.K., S. Kusunoki), Kindai University, Faculty of Medicine, Osaka, Japan; Department of Neurology (L.W.G.L., L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (S. Kuwabara), Chiba University, Japan; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (L.M.-A., L.Q.), Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, Spain; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, United Kingdom; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Research Hospital, Milan University, Italy; Department of Clinical Neurophysiology (Y.P.), Reference Centre for NMD, CHU Nantes, France; Department of Neurology (R.R.), Hospital Británico, Buenos Aires, Argentina; Department of Immunology (W.V.R., A.P.T.-G., R.H., B.C.J.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Department of Neurology (S.R.), Oxford University Hospitals NHS Foundation Trust, John Radcliffe Hospital; Department of Neurology (R.C.R.), Cambridge University Hospitals NHS Foundation Trust, Addenbrooke's Hospital, Cambridge Biomedical Campus, United Kingdom; Department of Medicine (N.S., T.C.-Y.), University of Malaya, Kuala Lumpur; Department of Neurology (S.H.S.), University of Southern Denmark, Odense; Department of Clinical Neurophysiology (H.T.), Aarhus University Hospital, Denmark; and Hospital Universitario Marques de Valdecilla (M.J.S.T.), Santander, Cantabria, Spain.; Hartung HP; From the Departments of Neurology (S.E.L., S. Arends, B.v.d.B., A.Y.D., P.A.v.D., K.K., L.W.G.L., W.V.R., J.R., C.V., B.C.J.), and Viroscience (A.A.v.d.E.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Department of Neurology (H.A., T.H.), Aarhus University Hospital, Denmark; Department of Neurology (G.A.), Mental Health and Sensory Organs (NESMOS), Faculty of Medicine and Psychology, University of Rome 'Sapienza,' Sant' Andrea Hospital, Italy; Department of Neurology (S. Arends), Haga Teaching Hospital, The Hague, the Netherlands; Department of Neurology (S. Attarian), Reference Centre for NMD, CHU Timone, Marseille, France; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, FLENI, Buenos Aires, Argentina; Division of Neurology (K.J.B., E.L.P.), Department of Medicine, Groote Schuur Hospital, University of Cape Town, South Africa; Department RH-MDC-Immunology (M.R.B., M.M.), Reinier de Graaf Gasthuis, Delft, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (B.v.d.B., F.H.V.), Franciscus Gasthuis & Vlietland, Schiedam, the Netherlands; Department of Neurology (P.V.d.B.), University Hospital St. Luc, University of Louvain, Brussels, Belgium; Department of Neurology (J.B.), Saarland University Medical School, Homburg (previous hospital), and MVZ Pfalzklinikum (J.B.), Kusel, Germany (current hospital); Department of Neurology (M.B.), Leeds Teaching Hospitals, United Kingdom; Department of Neurology (C.C., V.N.-H.), Neuromuscular Unit, Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Department of Neurology (D.R.C.), Johns Hopkins University, Baltimore, MD; Institute of Infection, Immunity and Inflammation (A.D., H.J.W.), University of Glasgow, United Kingdom; National Hospital Copenhagen (C.D.d.l.C.), Copenhagen, Denmark; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Alberta, Canada; Nuffield Department of Clinical Neurosciences (J.F., S.R.), University of Oxford, John Radcliffe Hospital, United Kingdom; Department of Neurology (T.G.-S., J.P.), Hospital Clínico de Santiago, Spain; Neurology, Neuromuscular Diseases, Electromyography (J.M.G.), Hospital for Special Surgery; Weill Medical College of Cornell University (J.M.G.), New York; Department of Neurology (K.C.G., B.S.), Tufts University School of Medicine, Boston, MA; Department of Neurology (V.G.), Montefiore Medical Center, New York; Department of Neurology (R.D.M.H.), King's College Hospital, London, United Kingdom; Department of Neurology (H.-P.H.), University of Düsseldorf, Germany; Brain and Mind Centre (H.-P.H.), University of Sydney, Australia; Department of Neurology (H.-P.H.), Medical University of Vienna, Austria; Laboratory of Gut-Brain Signaling (I.H., I.J., Z.I., Q.D.M.), Laboratory Sciences and Services Division, icddr,b, Dhaka, Bangladesh; Department of Neurology (J.V.H., S.H.S.), Odense University Hospital, Denmark; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, United Kingdom; Department of Neurology (S. Karafiath), Utah Valley University, Orem; Department of Neurology (H.D.K.), University Health Network, University of Toronto, ON, Canada; Department of Neurology (R.P.K., K.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (N.K.), University of Vermont Medical Centre, Burlington; Department of Neurology (M.K., S. Kusunoki), Kindai University, Faculty of Medicine, Osaka, Japan; Department of Neurology (L.W.G.L., L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (S. Kuwabara), Chiba University, Japan; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (L.M.-A., L.Q.), Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, Spain; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, United Kingdom; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Research Hospital, Milan University, Italy; Department of Clinical Neurophysiology (Y.P.), Reference Centre for NMD, CHU Nantes, France; Department of Neurology (R.R.), Hospital Británico, Buenos Aires, Argentina; Department of Immunology (W.V.R., A.P.T.-G., R.H., B.C.J.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Department of Neurology (S.R.), Oxford University Hospitals NHS Foundation Trust, John Radcliffe Hospital; Department of Neurology (R.C.R.), Cambridge University Hospitals NHS Foundation Trust, Addenbrooke's Hospital, Cambridge Biomedical Campus, United Kingdom; Department of Medicine (N.S., T.C.-Y.), University of Malaya, Kuala Lumpur; Department of Neurology (S.H.S.), University of Southern Denmark, Odense; Department of Clinical Neurophysiology (H.T.), Aarhus University Hospital, Denmark; and Hospital Universitario Marques de Valdecilla (M.J.S.T.), Santander, Cantabria, Spain.; Hasan I; From the Departments of Neurology (S.E.L., S. Arends, B.v.d.B., A.Y.D., P.A.v.D., K.K., L.W.G.L., W.V.R., J.R., C.V., B.C.J.), and Viroscience (A.A.v.d.E.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Department of Neurology (H.A., T.H.), Aarhus University Hospital, Denmark; Department of Neurology (G.A.), Mental Health and Sensory Organs (NESMOS), Faculty of Medicine and Psychology, University of Rome 'Sapienza,' Sant' Andrea Hospital, Italy; Department of Neurology (S. Arends), Haga Teaching Hospital, The Hague, the Netherlands; Department of Neurology (S. Attarian), Reference Centre for NMD, CHU Timone, Marseille, France; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, FLENI, Buenos Aires, Argentina; Division of Neurology (K.J.B., E.L.P.), Department of Medicine, Groote Schuur Hospital, University of Cape Town, South Africa; Department RH-MDC-Immunology (M.R.B., M.M.), Reinier de Graaf Gasthuis, Delft, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (B.v.d.B., F.H.V.), Franciscus Gasthuis & Vlietland, Schiedam, the Netherlands; Department of Neurology (P.V.d.B.), University Hospital St. Luc, University of Louvain, Brussels, Belgium; Department of Neurology (J.B.), Saarland University Medical School, Homburg (previous hospital), and MVZ Pfalzklinikum (J.B.), Kusel, Germany (current hospital); Department of Neurology (M.B.), Leeds Teaching Hospitals, United Kingdom; Department of Neurology (C.C., V.N.-H.), Neuromuscular Unit, Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Department of Neurology (D.R.C.), Johns Hopkins University, Baltimore, MD; Institute of Infection, Immunity and Inflammation (A.D., H.J.W.), University of Glasgow, United Kingdom; National Hospital Copenhagen (C.D.d.l.C.), Copenhagen, Denmark; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Alberta, Canada; Nuffield Department of Clinical Neurosciences (J.F., S.R.), University of Oxford, John Radcliffe Hospital, United Kingdom; Department of Neurology (T.G.-S., J.P.), Hospital Clínico de Santiago, Spain; Neurology, Neuromuscular Diseases, Electromyography (J.M.G.), Hospital for Special Surgery; Weill Medical College of Cornell University (J.M.G.), New York; Department of Neurology (K.C.G., B.S.), Tufts University School of Medicine, Boston, MA; Department of Neurology (V.G.), Montefiore Medical Center, New York; Department of Neurology (R.D.M.H.), King's College Hospital, London, United Kingdom; Department of Neurology (H.-P.H.), University of Düsseldorf, Germany; Brain and Mind Centre (H.-P.H.), University of Sydney, Australia; Department of Neurology (H.-P.H.), Medical University of Vienna, Austria; Laboratory of Gut-Brain Signaling (I.H., I.J., Z.I., Q.D.M.), Laboratory Sciences and Services Division, icddr,b, Dhaka, Bangladesh; Department of Neurology (J.V.H., S.H.S.), Odense University Hospital, Denmark; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, United Kingdom; Department of Neurology (S. Karafiath), Utah Valley University, Orem; Department of Neurology (H.D.K.), University Health Network, University of Toronto, ON, Canada; Department of Neurology (R.P.K., K.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (N.K.), University of Vermont Medical Centre, Burlington; Department of Neurology (M.K., S. Kusunoki), Kindai University, Faculty of Medicine, Osaka, Japan; Department of Neurology (L.W.G.L., L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (S. Kuwabara), Chiba University, Japan; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (L.M.-A., L.Q.), Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, Spain; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, United Kingdom; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Research Hospital, Milan University, Italy; Department of Clinical Neurophysiology (Y.P.), Reference Centre for NMD, CHU Nantes, France; Department of Neurology (R.R.), Hospital Británico, Buenos Aires, Argentina; Department of Immunology (W.V.R., A.P.T.-G., R.H., B.C.J.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Department of Neurology (S.R.), Oxford University Hospitals NHS Foundation Trust, John Radcliffe Hospital; Department of Neurology (R.C.R.), Cambridge University Hospitals NHS Foundation Trust, Addenbrooke's Hospital, Cambridge Biomedical Campus, United Kingdom; Department of Medicine (N.S., T.C.-Y.), University of Malaya, Kuala Lumpur; Department of Neurology (S.H.S.), University of Southern Denmark, Odense; Department of Clinical Neurophysiology (H.T.), Aarhus University Hospital, Denmark; and Hospital Universitario Marques de Valdecilla (M.J.S.T.), Santander, Cantabria, Spain.; Holbech JV; From the Departments of Neurology (S.E.L., S. Arends, B.v.d.B., A.Y.D., P.A.v.D., K.K., L.W.G.L., W.V.R., J.R., C.V., B.C.J.), and Viroscience (A.A.v.d.E.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Department of Neurology (H.A., T.H.), Aarhus University Hospital, Denmark; Department of Neurology (G.A.), Mental Health and Sensory Organs (NESMOS), Faculty of Medicine and Psychology, University of Rome 'Sapienza,' Sant' Andrea Hospital, Italy; Department of Neurology (S. Arends), Haga Teaching Hospital, The Hague, the Netherlands; Department of Neurology (S. Attarian), Reference Centre for NMD, CHU Timone, Marseille, France; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, FLENI, Buenos Aires, Argentina; Division of Neurology (K.J.B., E.L.P.), Department of Medicine, Groote Schuur Hospital, University of Cape Town, South Africa; Department RH-MDC-Immunology (M.R.B., M.M.), Reinier de Graaf Gasthuis, Delft, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (B.v.d.B., F.H.V.), Franciscus Gasthuis & Vlietland, Schiedam, the Netherlands; Department of Neurology (P.V.d.B.), University Hospital St. Luc, University of Louvain, Brussels, Belgium; Department of Neurology (J.B.), Saarland University Medical School, Homburg (previous hospital), and MVZ Pfalzklinikum (J.B.), Kusel, Germany (current hospital); Department of Neurology (M.B.), Leeds Teaching Hospitals, United Kingdom; Department of Neurology (C.C., V.N.-H.), Neuromuscular Unit, Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Department of Neurology (D.R.C.), Johns Hopkins University, Baltimore, MD; Institute of Infection, Immunity and Inflammation (A.D., H.J.W.), University of Glasgow, United Kingdom; National Hospital Copenhagen (C.D.d.l.C.), Copenhagen, Denmark; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Alberta, Canada; Nuffield Department of Clinical Neurosciences (J.F., S.R.), University of Oxford, John Radcliffe Hospital, United Kingdom; Department of Neurology (T.G.-S., J.P.), Hospital Clínico de Santiago, Spain; Neurology, Neuromuscular Diseases, Electromyography (J.M.G.), Hospital for Special Surgery; Weill Medical College of Cornell University (J.M.G.), New York; Department of Neurology (K.C.G., B.S.), Tufts University School of Medicine, Boston, MA; Department of Neurology (V.G.), Montefiore Medical Center, New York; Department of Neurology (R.D.M.H.), King's College Hospital, London, United Kingdom; Department of Neurology (H.-P.H.), University of Düsseldorf, Germany; Brain and Mind Centre (H.-P.H.), University of Sydney, Australia; Department of Neurology (H.-P.H.), Medical University of Vienna, Austria; Laboratory of Gut-Brain Signaling (I.H., I.J., Z.I., Q.D.M.), Laboratory Sciences and Services Division, icddr,b, Dhaka, Bangladesh; Department of Neurology (J.V.H., S.H.S.), Odense University Hospital, Denmark; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, United Kingdom; Department of Neurology (S. Karafiath), Utah Valley University, Orem; Department of Neurology (H.D.K.), University Health Network, University of Toronto, ON, Canada; Department of Neurology (R.P.K., K.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (N.K.), University of Vermont Medical Centre, Burlington; Department of Neurology (M.K., S. Kusunoki), Kindai University, Faculty of Medicine, Osaka, Japan; Department of Neurology (L.W.G.L., L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (S. Kuwabara), Chiba University, Japan; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (L.M.-A., L.Q.), Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, Spain; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, United Kingdom; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Research Hospital, Milan University, Italy; Department of Clinical Neurophysiology (Y.P.), Reference Centre for NMD, CHU Nantes, France; Department of Neurology (R.R.), Hospital Británico, Buenos Aires, Argentina; Department of Immunology (W.V.R., A.P.T.-G., R.H., B.C.J.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Department of Neurology (S.R.), Oxford University Hospitals NHS Foundation Trust, John Radcliffe Hospital; Department of Neurology (R.C.R.), Cambridge University Hospitals NHS Foundation Trust, Addenbrooke's Hospital, Cambridge Biomedical Campus, United Kingdom; Department of Medicine (N.S., T.C.-Y.), University of Malaya, Kuala Lumpur; Department of Neurology (S.H.S.), University of Southern Denmark, Odense; Department of Clinical Neurophysiology (H.T.), Aarhus University Hospital, Denmark; and Hospital Universitario Marques de Valdecilla (M.J.S.T.), Santander, Cantabria, Spain.; Holt JKL; From the Departments of Neurology (S.E.L., S. Arends, B.v.d.B., A.Y.D., P.A.v.D., K.K., L.W.G.L., W.V.R., J.R., C.V., B.C.J.), and Viroscience (A.A.v.d.E.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Department of Neurology (H.A., T.H.), Aarhus University Hospital, Denmark; Department of Neurology (G.A.), Mental Health and Sensory Organs (NESMOS), Faculty of Medicine and Psychology, University of Rome 'Sapienza,' Sant' Andrea Hospital, Italy; Department of Neurology (S. Arends), Haga Teaching Hospital, The Hague, the Netherlands; Department of Neurology (S. Attarian), Reference Centre for NMD, CHU Timone, Marseille, France; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, FLENI, Buenos Aires, Argentina; Division of Neurology (K.J.B., E.L.P.), Department of Medicine, Groote Schuur Hospital, University of Cape Town, South Africa; Department RH-MDC-Immunology (M.R.B., M.M.), Reinier de Graaf Gasthuis, Delft, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (B.v.d.B., F.H.V.), Franciscus Gasthuis & Vlietland, Schiedam, the Netherlands; Department of Neurology (P.V.d.B.), University Hospital St. Luc, University of Louvain, Brussels, Belgium; Department of Neurology (J.B.), Saarland University Medical School, Homburg (previous hospital), and MVZ Pfalzklinikum (J.B.), Kusel, Germany (current hospital); Department of Neurology (M.B.), Leeds Teaching Hospitals, United Kingdom; Department of Neurology (C.C., V.N.-H.), Neuromuscular Unit, Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Department of Neurology (D.R.C.), Johns Hopkins University, Baltimore, MD; Institute of Infection, Immunity and Inflammation (A.D., H.J.W.), University of Glasgow, United Kingdom; National Hospital Copenhagen (C.D.d.l.C.), Copenhagen, Denmark; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Alberta, Canada; Nuffield Department of Clinical Neurosciences (J.F., S.R.), University of Oxford, John Radcliffe Hospital, United Kingdom; Department of Neurology (T.G.-S., J.P.), Hospital Clínico de Santiago, Spain; Neurology, Neuromuscular Diseases, Electromyography (J.M.G.), Hospital for Special Surgery; Weill Medical College of Cornell University (J.M.G.), New York; Department of Neurology (K.C.G., B.S.), Tufts University School of Medicine, Boston, MA; Department of Neurology (V.G.), Montefiore Medical Center, New York; Department of Neurology (R.D.M.H.), King's College Hospital, London, United Kingdom; Department of Neurology (H.-P.H.), University of Düsseldorf, Germany; Brain and Mind Centre (H.-P.H.), University of Sydney, Australia; Department of Neurology (H.-P.H.), Medical University of Vienna, Austria; Laboratory of Gut-Brain Signaling (I.H., I.J., Z.I., Q.D.M.), Laboratory Sciences and Services Division, icddr,b, Dhaka, Bangladesh; Department of Neurology (J.V.H., S.H.S.), Odense University Hospital, Denmark; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, United Kingdom; Department of Neurology (S. Karafiath), Utah Valley University, Orem; Department of Neurology (H.D.K.), University Health Network, University of Toronto, ON, Canada; Department of Neurology (R.P.K., K.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (N.K.), University of Vermont Medical Centre, Burlington; Department of Neurology (M.K., S. Kusunoki), Kindai University, Faculty of Medicine, Osaka, Japan; Department of Neurology (L.W.G.L., L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (S. Kuwabara), Chiba University, Japan; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (L.M.-A., L.Q.), Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, Spain; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, United Kingdom; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Research Hospital, Milan University, Italy; Department of Clinical Neurophysiology (Y.P.), Reference Centre for NMD, CHU Nantes, France; Department of Neurology (R.R.), Hospital Británico, Buenos Aires, Argentina; Department of Immunology (W.V.R., A.P.T.-G., R.H., B.C.J.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Department of Neurology (S.R.), Oxford University Hospitals NHS Foundation Trust, John Radcliffe Hospital; Department of Neurology (R.C.R.), Cambridge University Hospitals NHS Foundation Trust, Addenbrooke's Hospital, Cambridge Biomedical Campus, United Kingdom; Department of Medicine (N.S., T.C.-Y.), University of Malaya, Kuala Lumpur; Department of Neurology (S.H.S.), University of Southern Denmark, Odense; Department of Clinical Neurophysiology (H.T.), Aarhus University Hospital, Denmark; and Hospital Universitario Marques de Valdecilla (M.J.S.T.), Santander, Cantabria, Spain.; Jahan I; From the Departments of Neurology (S.E.L., S. Arends, B.v.d.B., A.Y.D., P.A.v.D., K.K., L.W.G.L., W.V.R., J.R., C.V., B.C.J.), and Viroscience (A.A.v.d.E.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Department of Neurology (H.A., T.H.), Aarhus University Hospital, Denmark; Department of Neurology (G.A.), Mental Health and Sensory Organs (NESMOS), Faculty of Medicine and Psychology, University of Rome 'Sapienza,' Sant' Andrea Hospital, Italy; Department of Neurology (S. Arends), Haga Teaching Hospital, The Hague, the Netherlands; Department of Neurology (S. Attarian), Reference Centre for NMD, CHU Timone, Marseille, France; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, FLENI, Buenos Aires, Argentina; Division of Neurology (K.J.B., E.L.P.), Department of Medicine, Groote Schuur Hospital, University of Cape Town, South Africa; Department RH-MDC-Immunology (M.R.B., M.M.), Reinier de Graaf Gasthuis, Delft, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (B.v.d.B., F.H.V.), Franciscus Gasthuis & Vlietland, Schiedam, the Netherlands; Department of Neurology (P.V.d.B.), University Hospital St. Luc, University of Louvain, Brussels, Belgium; Department of Neurology (J.B.), Saarland University Medical School, Homburg (previous hospital), and MVZ Pfalzklinikum (J.B.), Kusel, Germany (current hospital); Department of Neurology (M.B.), Leeds Teaching Hospitals, United Kingdom; Department of Neurology (C.C., V.N.-H.), Neuromuscular Unit, Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Department of Neurology (D.R.C.), Johns Hopkins University, Baltimore, MD; Institute of Infection, Immunity and Inflammation (A.D., H.J.W.), University of Glasgow, United Kingdom; National Hospital Copenhagen (C.D.d.l.C.), Copenhagen, Denmark; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Alberta, Canada; Nuffield Department of Clinical Neurosciences (J.F., S.R.), University of Oxford, John Radcliffe Hospital, United Kingdom; Department of Neurology (T.G.-S., J.P.), Hospital Clínico de Santiago, Spain; Neurology, Neuromuscular Diseases, Electromyography (J.M.G.), Hospital for Special Surgery; Weill Medical College of Cornell University (J.M.G.), New York; Department of Neurology (K.C.G., B.S.), Tufts University School of Medicine, Boston, MA; Department of Neurology (V.G.), Montefiore Medical Center, New York; Department of Neurology (R.D.M.H.), King's College Hospital, London, United Kingdom; Department of Neurology (H.-P.H.), University of Düsseldorf, Germany; Brain and Mind Centre (H.-P.H.), University of Sydney, Australia; Department of Neurology (H.-P.H.), Medical University of Vienna, Austria; Laboratory of Gut-Brain Signaling (I.H., I.J., Z.I., Q.D.M.), Laboratory Sciences and Services Division, icddr,b, Dhaka, Bangladesh; Department of Neurology (J.V.H., S.H.S.), Odense University Hospital, Denmark; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, United Kingdom; Department of Neurology (S. Karafiath), Utah Valley University, Orem; Department of Neurology (H.D.K.), University Health Network, University of Toronto, ON, Canada; Department of Neurology (R.P.K., K.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (N.K.), University of Vermont Medical Centre, Burlington; Department of Neurology (M.K., S. Kusunoki), Kindai University, Faculty of Medicine, Osaka, Japan; Department of Neurology (L.W.G.L., L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (S. Kuwabara), Chiba University, Japan; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (L.M.-A., L.Q.), Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, Spain; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, United Kingdom; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Research Hospital, Milan University, Italy; Department of Clinical Neurophysiology (Y.P.), Reference Centre for NMD, CHU Nantes, France; Department of Neurology (R.R.), Hospital Británico, Buenos Aires, Argentina; Department of Immunology (W.V.R., A.P.T.-G., R.H., B.C.J.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Department of Neurology (S.R.), Oxford University Hospitals NHS Foundation Trust, John Radcliffe Hospital; Department of Neurology (R.C.R.), Cambridge University Hospitals NHS Foundation Trust, Addenbrooke's Hospital, Cambridge Biomedical Campus, United Kingdom; Department of Medicine (N.S., T.C.-Y.), University of Malaya, Kuala Lumpur; Department of Neurology (S.H.S.), University of Southern Denmark, Odense; Department of Clinical Neurophysiology (H.T.), Aarhus University Hospital, Denmark; and Hospital Universitario Marques de Valdecilla (M.J.S.T.), Santander, Cantabria, Spain.; Islam Z; From the Departments of Neurology (S.E.L., S. Arends, B.v.d.B., A.Y.D., P.A.v.D., K.K., L.W.G.L., W.V.R., J.R., C.V., B.C.J.), and Viroscience (A.A.v.d.E.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Department of Neurology (H.A., T.H.), Aarhus University Hospital, Denmark; Department of Neurology (G.A.), Mental Health and Sensory Organs (NESMOS), Faculty of Medicine and Psychology, University of Rome 'Sapienza,' Sant' Andrea Hospital, Italy; Department of Neurology (S. Arends), Haga Teaching Hospital, The Hague, the Netherlands; Department of Neurology (S. Attarian), Reference Centre for NMD, CHU Timone, Marseille, France; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, FLENI, Buenos Aires, Argentina; Division of Neurology (K.J.B., E.L.P.), Department of Medicine, Groote Schuur Hospital, University of Cape Town, South Africa; Department RH-MDC-Immunology (M.R.B., M.M.), Reinier de Graaf Gasthuis, Delft, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (B.v.d.B., F.H.V.), Franciscus Gasthuis & Vlietland, Schiedam, the Netherlands; Department of Neurology (P.V.d.B.), University Hospital St. Luc, University of Louvain, Brussels, Belgium; Department of Neurology (J.B.), Saarland University Medical School, Homburg (previous hospital), and MVZ Pfalzklinikum (J.B.), Kusel, Germany (current hospital); Department of Neurology (M.B.), Leeds Teaching Hospitals, United Kingdom; Department of Neurology (C.C., V.N.-H.), Neuromuscular Unit, Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Department of Neurology (D.R.C.), Johns Hopkins University, Baltimore, MD; Institute of Infection, Immunity and Inflammation (A.D., H.J.W.), University of Glasgow, United Kingdom; National Hospital Copenhagen (C.D.d.l.C.), Copenhagen, Denmark; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Alberta, Canada; Nuffield Department of Clinical Neurosciences (J.F., S.R.), University of Oxford, John Radcliffe Hospital, United Kingdom; Department of Neurology (T.G.-S., J.P.), Hospital Clínico de Santiago, Spain; Neurology, Neuromuscular Diseases, Electromyography (J.M.G.), Hospital for Special Surgery; Weill Medical College of Cornell University (J.M.G.), New York; Department of Neurology (K.C.G., B.S.), Tufts University School of Medicine, Boston, MA; Department of Neurology (V.G.), Montefiore Medical Center, New York; Department of Neurology (R.D.M.H.), King's College Hospital, London, United Kingdom; Department of Neurology (H.-P.H.), University of Düsseldorf, Germany; Brain and Mind Centre (H.-P.H.), University of Sydney, Australia; Department of Neurology (H.-P.H.), Medical University of Vienna, Austria; Laboratory of Gut-Brain Signaling (I.H., I.J., Z.I., Q.D.M.), Laboratory Sciences and Services Division, icddr,b, Dhaka, Bangladesh; Department of Neurology (J.V.H., S.H.S.), Odense University Hospital, Denmark; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, United Kingdom; Department of Neurology (S. Karafiath), Utah Valley University, Orem; Department of Neurology (H.D.K.), University Health Network, University of Toronto, ON, Canada; Department of Neurology (R.P.K., K.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (N.K.), University of Vermont Medical Centre, Burlington; Department of Neurology (M.K., S. Kusunoki), Kindai University, Faculty of Medicine, Osaka, Japan; Department of Neurology (L.W.G.L., L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (S. Kuwabara), Chiba University, Japan; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (L.M.-A., L.Q.), Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, Spain; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, United Kingdom; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Research Hospital, Milan University, Italy; Department of Clinical Neurophysiology (Y.P.), Reference Centre for NMD, CHU Nantes, France; Department of Neurology (R.R.), Hospital Británico, Buenos Aires, Argentina; Department of Immunology (W.V.R., A.P.T.-G., R.H., B.C.J.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Department of Neurology (S.R.), Oxford University Hospitals NHS Foundation Trust, John Radcliffe Hospital; Department of Neurology (R.C.R.), Cambridge University Hospitals NHS Foundation Trust, Addenbrooke's Hospital, Cambridge Biomedical Campus, United Kingdom; Department of Medicine (N.S., T.C.-Y.), University of Malaya, Kuala Lumpur; Department of Neurology (S.H.S.), University of Southern Denmark, Odense; Department of Clinical Neurophysiology (H.T.), Aarhus University Hospital, Denmark; and Hospital Universitario Marques de Valdecilla (M.J.S.T.), Santander, Cantabria, Spain.; Karafiath S; From the Departments of Neurology (S.E.L., S. Arends, B.v.d.B., A.Y.D., P.A.v.D., K.K., L.W.G.L., W.V.R., J.R., C.V., B.C.J.), and Viroscience (A.A.v.d.E.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Department of Neurology (H.A., T.H.), Aarhus University Hospital, Denmark; Department of Neurology (G.A.), Mental Health and Sensory Organs (NESMOS), Faculty of Medicine and Psychology, University of Rome 'Sapienza,' Sant' Andrea Hospital, Italy; Department of Neurology (S. Arends), Haga Teaching Hospital, The Hague, the Netherlands; Department of Neurology (S. Attarian), Reference Centre for NMD, CHU Timone, Marseille, France; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, FLENI, Buenos Aires, Argentina; Division of Neurology (K.J.B., E.L.P.), Department of Medicine, Groote Schuur Hospital, University of Cape Town, South Africa; Department RH-MDC-Immunology (M.R.B., M.M.), Reinier de Graaf Gasthuis, Delft, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (B.v.d.B., F.H.V.), Franciscus Gasthuis & Vlietland, Schiedam, the Netherlands; Department of Neurology (P.V.d.B.), University Hospital St. Luc, University of Louvain, Brussels, Belgium; Department of Neurology (J.B.), Saarland University Medical School, Homburg (previous hospital), and MVZ Pfalzklinikum (J.B.), Kusel, Germany (current hospital); Department of Neurology (M.B.), Leeds Teaching Hospitals, United Kingdom; Department of Neurology (C.C., V.N.-H.), Neuromuscular Unit, Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Department of Neurology (D.R.C.), Johns Hopkins University, Baltimore, MD; Institute of Infection, Immunity and Inflammation (A.D., H.J.W.), University of Glasgow, United Kingdom; National Hospital Copenhagen (C.D.d.l.C.), Copenhagen, Denmark; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Alberta, Canada; Nuffield Department of Clinical Neurosciences (J.F., S.R.), University of Oxford, John Radcliffe Hospital, United Kingdom; Department of Neurology (T.G.-S., J.P.), Hospital Clínico de Santiago, Spain; Neurology, Neuromuscular Diseases, Electromyography (J.M.G.), Hospital for Special Surgery; Weill Medical College of Cornell University (J.M.G.), New York; Department of Neurology (K.C.G., B.S.), Tufts University School of Medicine, Boston, MA; Department of Neurology (V.G.), Montefiore Medical Center, New York; Department of Neurology (R.D.M.H.), King's College Hospital, London, United Kingdom; Department of Neurology (H.-P.H.), University of Düsseldorf, Germany; Brain and Mind Centre (H.-P.H.), University of Sydney, Australia; Department of Neurology (H.-P.H.), Medical University of Vienna, Austria; Laboratory of Gut-Brain Signaling (I.H., I.J., Z.I., Q.D.M.), Laboratory Sciences and Services Division, icddr,b, Dhaka, Bangladesh; Department of Neurology (J.V.H., S.H.S.), Odense University Hospital, Denmark; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, United Kingdom; Department of Neurology (S. Karafiath), Utah Valley University, Orem; Department of Neurology (H.D.K.), University Health Network, University of Toronto, ON, Canada; Department of Neurology (R.P.K., K.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (N.K.), University of Vermont Medical Centre, Burlington; Department of Neurology (M.K., S. Kusunoki), Kindai University, Faculty of Medicine, Osaka, Japan; Department of Neurology (L.W.G.L., L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (S. Kuwabara), Chiba University, Japan; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (L.M.-A., L.Q.), Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, Spain; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, United Kingdom; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Research Hospital, Milan University, Italy; Department of Clinical Neurophysiology (Y.P.), Reference Centre for NMD, CHU Nantes, France; Department of Neurology (R.R.), Hospital Británico, Buenos Aires, Argentina; Department of Immunology (W.V.R., A.P.T.-G., R.H., B.C.J.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Department of Neurology (S.R.), Oxford University Hospitals NHS Foundation Trust, John Radcliffe Hospital; Department of Neurology (R.C.R.), Cambridge University Hospitals NHS Foundation Trust, Addenbrooke's Hospital, Cambridge Biomedical Campus, United Kingdom; Department of Medicine (N.S., T.C.-Y.), University of Malaya, Kuala Lumpur; Department of Neurology (S.H.S.), University of Southern Denmark, Odense; Department of Clinical Neurophysiology (H.T.), Aarhus University Hospital, Denmark; and Hospital Universitario Marques de Valdecilla (M.J.S.T.), Santander, Cantabria, Spain.; Katzberg HD; From the Departments of Neurology (S.E.L., S. Arends, B.v.d.B., A.Y.D., P.A.v.D., K.K., L.W.G.L., W.V.R., J.R., C.V., B.C.J.), and Viroscience (A.A.v.d.E.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Department of Neurology (H.A., T.H.), Aarhus University Hospital, Denmark; Department of Neurology (G.A.), Mental Health and Sensory Organs (NESMOS), Faculty of Medicine and Psychology, University of Rome 'Sapienza,' Sant' Andrea Hospital, Italy; Department of Neurology (S. Arends), Haga Teaching Hospital, The Hague, the Netherlands; Department of Neurology (S. Attarian), Reference Centre for NMD, CHU Timone, Marseille, France; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, FLENI, Buenos Aires, Argentina; Division of Neurology (K.J.B., E.L.P.), Department of Medicine, Groote Schuur Hospital, University of Cape Town, South Africa; Department RH-MDC-Immunology (M.R.B., M.M.), Reinier de Graaf Gasthuis, Delft, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (B.v.d.B., F.H.V.), Franciscus Gasthuis & Vlietland, Schiedam, the Netherlands; Department of Neurology (P.V.d.B.), University Hospital St. Luc, University of Louvain, Brussels, Belgium; Department of Neurology (J.B.), Saarland University Medical School, Homburg (previous hospital), and MVZ Pfalzklinikum (J.B.), Kusel, Germany (current hospital); Department of Neurology (M.B.), Leeds Teaching Hospitals, United Kingdom; Department of Neurology (C.C., V.N.-H.), Neuromuscular Unit, Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Department of Neurology (D.R.C.), Johns Hopkins University, Baltimore, MD; Institute of Infection, Immunity and Inflammation (A.D., H.J.W.), University of Glasgow, United Kingdom; National Hospital Copenhagen (C.D.d.l.C.), Copenhagen, Denmark; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Alberta, Canada; Nuffield Department of Clinical Neurosciences (J.F., S.R.), University of Oxford, John Radcliffe Hospital, United Kingdom; Department of Neurology (T.G.-S., J.P.), Hospital Clínico de Santiago, Spain; Neurology, Neuromuscular Diseases, Electromyography (J.M.G.), Hospital for Special Surgery; Weill Medical College of Cornell University (J.M.G.), New York; Department of Neurology (K.C.G., B.S.), Tufts University School of Medicine, Boston, MA; Department of Neurology (V.G.), Montefiore Medical Center, New York; Department of Neurology (R.D.M.H.), King's College Hospital, London, United Kingdom; Department of Neurology (H.-P.H.), University of Düsseldorf, Germany; Brain and Mind Centre (H.-P.H.), University of Sydney, Australia; Department of Neurology (H.-P.H.), Medical University of Vienna, Austria; Laboratory of Gut-Brain Signaling (I.H., I.J., Z.I., Q.D.M.), Laboratory Sciences and Services Division, icddr,b, Dhaka, Bangladesh; Department of Neurology (J.V.H., S.H.S.), Odense University Hospital, Denmark; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, United Kingdom; Department of Neurology (S. Karafiath), Utah Valley University, Orem; Department of Neurology (H.D.K.), University Health Network, University of Toronto, ON, Canada; Department of Neurology (R.P.K., K.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (N.K.), University of Vermont Medical Centre, Burlington; Department of Neurology (M.K., S. Kusunoki), Kindai University, Faculty of Medicine, Osaka, Japan; Department of Neurology (L.W.G.L., L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (S. Kuwabara), Chiba University, Japan; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (L.M.-A., L.Q.), Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, Spain; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, United Kingdom; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Research Hospital, Milan University, Italy; Department of Clinical Neurophysiology (Y.P.), Reference Centre for NMD, CHU Nantes, France; Department of Neurology (R.R.), Hospital Británico, Buenos Aires, Argentina; Department of Immunology (W.V.R., A.P.T.-G., R.H., B.C.J.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Department of Neurology (S.R.), Oxford University Hospitals NHS Foundation Trust, John Radcliffe Hospital; Department of Neurology (R.C.R.), Cambridge University Hospitals NHS Foundation Trust, Addenbrooke's Hospital, Cambridge Biomedical Campus, United Kingdom; Department of Medicine (N.S., T.C.-Y.), University of Malaya, Kuala Lumpur; Department of Neurology (S.H.S.), University of Southern Denmark, Odense; Department of Clinical Neurophysiology (H.T.), Aarhus University Hospital, Denmark; and Hospital Universitario Marques de Valdecilla (M.J.S.T.), Santander, Cantabria, Spain.; Kleyweg RP; From the Departments of Neurology (S.E.L., S. Arends, B.v.d.B., A.Y.D., P.A.v.D., K.K., L.W.G.L., W.V.R., J.R., C.V., B.C.J.), and Viroscience (A.A.v.d.E.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Department of Neurology (H.A., T.H.), Aarhus University Hospital, Denmark; Department of Neurology (G.A.), Mental Health and Sensory Organs (NESMOS), Faculty of Medicine and Psychology, University of Rome 'Sapienza,' Sant' Andrea Hospital, Italy; Department of Neurology (S. Arends), Haga Teaching Hospital, The Hague, the Netherlands; Department of Neurology (S. Attarian), Reference Centre for NMD, CHU Timone, Marseille, France; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, FLENI, Buenos Aires, Argentina; Division of Neurology (K.J.B., E.L.P.), Department of Medicine, Groote Schuur Hospital, University of Cape Town, South Africa; Department RH-MDC-Immunology (M.R.B., M.M.), Reinier de Graaf Gasthuis, Delft, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (B.v.d.B., F.H.V.), Franciscus Gasthuis & Vlietland, Schiedam, the Netherlands; Department of Neurology (P.V.d.B.), University Hospital St. Luc, University of Louvain, Brussels, Belgium; Department of Neurology (J.B.), Saarland University Medical School, Homburg (previous hospital), and MVZ Pfalzklinikum (J.B.), Kusel, Germany (current hospital); Department of Neurology (M.B.), Leeds Teaching Hospitals, United Kingdom; Department of Neurology (C.C., V.N.-H.), Neuromuscular Unit, Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Department of Neurology (D.R.C.), Johns Hopkins University, Baltimore, MD; Institute of Infection, Immunity and Inflammation (A.D., H.J.W.), University of Glasgow, United Kingdom; National Hospital Copenhagen (C.D.d.l.C.), Copenhagen, Denmark; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Alberta, Canada; Nuffield Department of Clinical Neurosciences (J.F., S.R.), University of Oxford, John Radcliffe Hospital, United Kingdom; Department of Neurology (T.G.-S., J.P.), Hospital Clínico de Santiago, Spain; Neurology, Neuromuscular Diseases, Electromyography (J.M.G.), Hospital for Special Surgery; Weill Medical College of Cornell University (J.M.G.), New York; Department of Neurology (K.C.G., B.S.), Tufts University School of Medicine, Boston, MA; Department of Neurology (V.G.), Montefiore Medical Center, New York; Department of Neurology (R.D.M.H.), King's College Hospital, London, United Kingdom; Department of Neurology (H.-P.H.), University of Düsseldorf, Germany; Brain and Mind Centre (H.-P.H.), University of Sydney, Australia; Department of Neurology (H.-P.H.), Medical University of Vienna, Austria; Laboratory of Gut-Brain Signaling (I.H., I.J., Z.I., Q.D.M.), Laboratory Sciences and Services Division, icddr,b, Dhaka, Bangladesh; Department of Neurology (J.V.H., S.H.S.), Odense University Hospital, Denmark; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, United Kingdom; Department of Neurology (S. Karafiath), Utah Valley University, Orem; Department of Neurology (H.D.K.), University Health Network, University of Toronto, ON, Canada; Department of Neurology (R.P.K., K.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (N.K.), University of Vermont Medical Centre, Burlington; Department of Neurology (M.K., S. Kusunoki), Kindai University, Faculty of Medicine, Osaka, Japan; Department of Neurology (L.W.G.L., L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (S. Kuwabara), Chiba University, Japan; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (L.M.-A., L.Q.), Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, Spain; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, United Kingdom; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Research Hospital, Milan University, Italy; Department of Clinical Neurophysiology (Y.P.), Reference Centre for NMD, CHU Nantes, France; Department of Neurology (R.R.), Hospital Británico, Buenos Aires, Argentina; Department of Immunology (W.V.R., A.P.T.-G., R.H., B.C.J.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Department of Neurology (S.R.), Oxford University Hospitals NHS Foundation Trust, John Radcliffe Hospital; Department of Neurology (R.C.R.), Cambridge University Hospitals NHS Foundation Trust, Addenbrooke's Hospital, Cambridge Biomedical Campus, United Kingdom; Department of Medicine (N.S., T.C.-Y.), University of Malaya, Kuala Lumpur; Department of Neurology (S.H.S.), University of Southern Denmark, Odense; Department of Clinical Neurophysiology (H.T.), Aarhus University Hospital, Denmark; and Hospital Universitario Marques de Valdecilla (M.J.S.T.), Santander, Cantabria, Spain.; Kolb N; From the Departments of Neurology (S.E.L., S. Arends, B.v.d.B., A.Y.D., P.A.v.D., K.K., L.W.G.L., W.V.R., J.R., C.V., B.C.J.), and Viroscience (A.A.v.d.E.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Department of Neurology (H.A., T.H.), Aarhus University Hospital, Denmark; Department of Neurology (G.A.), Mental Health and Sensory Organs (NESMOS), Faculty of Medicine and Psychology, University of Rome 'Sapienza,' Sant' Andrea Hospital, Italy; Department of Neurology (S. Arends), Haga Teaching Hospital, The Hague, the Netherlands; Department of Neurology (S. Attarian), Reference Centre for NMD, CHU Timone, Marseille, France; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, FLENI, Buenos Aires, Argentina; Division of Neurology (K.J.B., E.L.P.), Department of Medicine, Groote Schuur Hospital, University of Cape Town, South Africa; Department RH-MDC-Immunology (M.R.B., M.M.), Reinier de Graaf Gasthuis, Delft, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (B.v.d.B., F.H.V.), Franciscus Gasthuis & Vlietland, Schiedam, the Netherlands; Department of Neurology (P.V.d.B.), University Hospital St. Luc, University of Louvain, Brussels, Belgium; Department of Neurology (J.B.), Saarland University Medical School, Homburg (previous hospital), and MVZ Pfalzklinikum (J.B.), Kusel, Germany (current hospital); Department of Neurology (M.B.), Leeds Teaching Hospitals, United Kingdom; Department of Neurology (C.C., V.N.-H.), Neuromuscular Unit, Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Department of Neurology (D.R.C.), Johns Hopkins University, Baltimore, MD; Institute of Infection, Immunity and Inflammation (A.D., H.J.W.), University of Glasgow, United Kingdom; National Hospital Copenhagen (C.D.d.l.C.), Copenhagen, Denmark; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Alberta, Canada; Nuffield Department of Clinical Neurosciences (J.F., S.R.), University of Oxford, John Radcliffe Hospital, United Kingdom; Department of Neurology (T.G.-S., J.P.), Hospital Clínico de Santiago, Spain; Neurology, Neuromuscular Diseases, Electromyography (J.M.G.), Hospital for Special Surgery; Weill Medical College of Cornell University (J.M.G.), New York; Department of Neurology (K.C.G., B.S.), Tufts University School of Medicine, Boston, MA; Department of Neurology (V.G.), Montefiore Medical Center, New York; Department of Neurology (R.D.M.H.), King's College Hospital, London, United Kingdom; Department of Neurology (H.-P.H.), University of Düsseldorf, Germany; Brain and Mind Centre (H.-P.H.), University of Sydney, Australia; Department of Neurology (H.-P.H.), Medical University of Vienna, Austria; Laboratory of Gut-Brain Signaling (I.H., I.J., Z.I., Q.D.M.), Laboratory Sciences and Services Division, icddr,b, Dhaka, Bangladesh; Department of Neurology (J.V.H., S.H.S.), Odense University Hospital, Denmark; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, United Kingdom; Department of Neurology (S. Karafiath), Utah Valley University, Orem; Department of Neurology (H.D.K.), University Health Network, University of Toronto, ON, Canada; Department of Neurology (R.P.K., K.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (N.K.), University of Vermont Medical Centre, Burlington; Department of Neurology (M.K., S. Kusunoki), Kindai University, Faculty of Medicine, Osaka, Japan; Department of Neurology (L.W.G.L., L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (S. Kuwabara), Chiba University, Japan; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (L.M.-A., L.Q.), Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, Spain; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, United Kingdom; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Research Hospital, Milan University, Italy; Department of Clinical Neurophysiology (Y.P.), Reference Centre for NMD, CHU Nantes, France; Department of Neurology (R.R.), Hospital Británico, Buenos Aires, Argentina; Department of Immunology (W.V.R., A.P.T.-G., R.H., B.C.J.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Department of Neurology (S.R.), Oxford University Hospitals NHS Foundation Trust, John Radcliffe Hospital; Department of Neurology (R.C.R.), Cambridge University Hospitals NHS Foundation Trust, Addenbrooke's Hospital, Cambridge Biomedical Campus, United Kingdom; Department of Medicine (N.S., T.C.-Y.), University of Malaya, Kuala Lumpur; Department of Neurology (S.H.S.), University of Southern Denmark, Odense; Department of Clinical Neurophysiology (H.T.), Aarhus University Hospital, Denmark; and Hospital Universitario Marques de Valdecilla (M.J.S.T.), Santander, Cantabria, Spain.; Kuitwaard K; From the Departments of Neurology (S.E.L., S. Arends, B.v.d.B., A.Y.D., P.A.v.D., K.K., L.W.G.L., W.V.R., J.R., C.V., B.C.J.), and Viroscience (A.A.v.d.E.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Department of Neurology (H.A., T.H.), Aarhus University Hospital, Denmark; Department of Neurology (G.A.), Mental Health and Sensory Organs (NESMOS), Faculty of Medicine and Psychology, University of Rome 'Sapienza,' Sant' Andrea Hospital, Italy; Department of Neurology (S. Arends), Haga Teaching Hospital, The Hague, the Netherlands; Department of Neurology (S. Attarian), Reference Centre for NMD, CHU Timone, Marseille, France; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, FLENI, Buenos Aires, Argentina; Division of Neurology (K.J.B., E.L.P.), Department of Medicine, Groote Schuur Hospital, University of Cape Town, South Africa; Department RH-MDC-Immunology (M.R.B., M.M.), Reinier de Graaf Gasthuis, Delft, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (B.v.d.B., F.H.V.), Franciscus Gasthuis & Vlietland, Schiedam, the Netherlands; Department of Neurology (P.V.d.B.), University Hospital St. Luc, University of Louvain, Brussels, Belgium; Department of Neurology (J.B.), Saarland University Medical School, Homburg (previous hospital), and MVZ Pfalzklinikum (J.B.), Kusel, Germany (current hospital); Department of Neurology (M.B.), Leeds Teaching Hospitals, United Kingdom; Department of Neurology (C.C., V.N.-H.), Neuromuscular Unit, Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Department of Neurology (D.R.C.), Johns Hopkins University, Baltimore, MD; Institute of Infection, Immunity and Inflammation (A.D., H.J.W.), University of Glasgow, United Kingdom; National Hospital Copenhagen (C.D.d.l.C.), Copenhagen, Denmark; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Alberta, Canada; Nuffield Department of Clinical Neurosciences (J.F., S.R.), University of Oxford, John Radcliffe Hospital, United Kingdom; Department of Neurology (T.G.-S., J.P.), Hospital Clínico de Santiago, Spain; Neurology, Neuromuscular Diseases, Electromyography (J.M.G.), Hospital for Special Surgery; Weill Medical College of Cornell University (J.M.G.), New York; Department of Neurology (K.C.G., B.S.), Tufts University School of Medicine, Boston, MA; Department of Neurology (V.G.), Montefiore Medical Center, New York; Department of Neurology (R.D.M.H.), King's College Hospital, London, United Kingdom; Department of Neurology (H.-P.H.), University of Düsseldorf, Germany; Brain and Mind Centre (H.-P.H.), University of Sydney, Australia; Department of Neurology (H.-P.H.), Medical University of Vienna, Austria; Laboratory of Gut-Brain Signaling (I.H., I.J., Z.I., Q.D.M.), Laboratory Sciences and Services Division, icddr,b, Dhaka, Bangladesh; Department of Neurology (J.V.H., S.H.S.), Odense University Hospital, Denmark; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, United Kingdom; Department of Neurology (S. Karafiath), Utah Valley University, Orem; Department of Neurology (H.D.K.), University Health Network, University of Toronto, ON, Canada; Department of Neurology (R.P.K., K.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (N.K.), University of Vermont Medical Centre, Burlington; Department of Neurology (M.K., S. Kusunoki), Kindai University, Faculty of Medicine, Osaka, Japan; Department of Neurology (L.W.G.L., L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (S. Kuwabara), Chiba University, Japan; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (L.M.-A., L.Q.), Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, Spain; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, United Kingdom; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Research Hospital, Milan University, Italy; Department of Clinical Neurophysiology (Y.P.), Reference Centre for NMD, CHU Nantes, France; Department of Neurology (R.R.), Hospital Británico, Buenos Aires, Argentina; Department of Immunology (W.V.R., A.P.T.-G., R.H., B.C.J.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Department of Neurology (S.R.), Oxford University Hospitals NHS Foundation Trust, John Radcliffe Hospital; Department of Neurology (R.C.R.), Cambridge University Hospitals NHS Foundation Trust, Addenbrooke's Hospital, Cambridge Biomedical Campus, United Kingdom; Department of Medicine (N.S., T.C.-Y.), University of Malaya, Kuala Lumpur; Department of Neurology (S.H.S.), University of Southern Denmark, Odense; Department of Clinical Neurophysiology (H.T.), Aarhus University Hospital, Denmark; and Hospital Universitario Marques de Valdecilla (M.J.S.T.), Santander, Cantabria, Spain.; Kuwahara M; From the Departments of Neurology (S.E.L., S. Arends, B.v.d.B., A.Y.D., P.A.v.D., K.K., L.W.G.L., W.V.R., J.R., C.V., B.C.J.), and Viroscience (A.A.v.d.E.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Department of Neurology (H.A., T.H.), Aarhus University Hospital, Denmark; Department of Neurology (G.A.), Mental Health and Sensory Organs (NESMOS), Faculty of Medicine and Psychology, University of Rome 'Sapienza,' Sant' Andrea Hospital, Italy; Department of Neurology (S. Arends), Haga Teaching Hospital, The Hague, the Netherlands; Department of Neurology (S. Attarian), Reference Centre for NMD, CHU Timone, Marseille, France; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, FLENI, Buenos Aires, Argentina; Division of Neurology (K.J.B., E.L.P.), Department of Medicine, Groote Schuur Hospital, University of Cape Town, South Africa; Department RH-MDC-Immunology (M.R.B., M.M.), Reinier de Graaf Gasthuis, Delft, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (B.v.d.B., F.H.V.), Franciscus Gasthuis & Vlietland, Schiedam, the Netherlands; Department of Neurology (P.V.d.B.), University Hospital St. Luc, University of Louvain, Brussels, Belgium; Department of Neurology (J.B.), Saarland University Medical School, Homburg (previous hospital), and MVZ Pfalzklinikum (J.B.), Kusel, Germany (current hospital); Department of Neurology (M.B.), Leeds Teaching Hospitals, United Kingdom; Department of Neurology (C.C., V.N.-H.), Neuromuscular Unit, Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Department of Neurology (D.R.C.), Johns Hopkins University, Baltimore, MD; Institute of Infection, Immunity and Inflammation (A.D., H.J.W.), University of Glasgow, United Kingdom; National Hospital Copenhagen (C.D.d.l.C.), Copenhagen, Denmark; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Alberta, Canada; Nuffield Department of Clinical Neurosciences (J.F., S.R.), University of Oxford, John Radcliffe Hospital, United Kingdom; Department of Neurology (T.G.-S., J.P.), Hospital Clínico de Santiago, Spain; Neurology, Neuromuscular Diseases, Electromyography (J.M.G.), Hospital for Special Surgery; Weill Medical College of Cornell University (J.M.G.), New York; Department of Neurology (K.C.G., B.S.), Tufts University School of Medicine, Boston, MA; Department of Neurology (V.G.), Montefiore Medical Center, New York; Department of Neurology (R.D.M.H.), King's College Hospital, London, United Kingdom; Department of Neurology (H.-P.H.), University of Düsseldorf, Germany; Brain and Mind Centre (H.-P.H.), University of Sydney, Australia; Department of Neurology (H.-P.H.), Medical University of Vienna, Austria; Laboratory of Gut-Brain Signaling (I.H., I.J., Z.I., Q.D.M.), Laboratory Sciences and Services Division, icddr,b, Dhaka, Bangladesh; Department of Neurology (J.V.H., S.H.S.), Odense University Hospital, Denmark; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, United Kingdom; Department of Neurology (S. Karafiath), Utah Valley University, Orem; Department of Neurology (H.D.K.), University Health Network, University of Toronto, ON, Canada; Department of Neurology (R.P.K., K.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (N.K.), University of Vermont Medical Centre, Burlington; Department of Neurology (M.K., S. Kusunoki), Kindai University, Faculty of Medicine, Osaka, Japan; Department of Neurology (L.W.G.L., L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (S. Kuwabara), Chiba University, Japan; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (L.M.-A., L.Q.), Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, Spain; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, United Kingdom; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Research Hospital, Milan University, Italy; Department of Clinical Neurophysiology (Y.P.), Reference Centre for NMD, CHU Nantes, France; Department of Neurology (R.R.), Hospital Británico, Buenos Aires, Argentina; Department of Immunology (W.V.R., A.P.T.-G., R.H., B.C.J.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Department of Neurology (S.R.), Oxford University Hospitals NHS Foundation Trust, John Radcliffe Hospital; Department of Neurology (R.C.R.), Cambridge University Hospitals NHS Foundation Trust, Addenbrooke's Hospital, Cambridge Biomedical Campus, United Kingdom; Department of Medicine (N.S., T.C.-Y.), University of Malaya, Kuala Lumpur; Department of Neurology (S.H.S.), University of Southern Denmark, Odense; Department of Clinical Neurophysiology (H.T.), Aarhus University Hospital, Denmark; and Hospital Universitario Marques de Valdecilla (M.J.S.T.), Santander, Cantabria, Spain.; Kusunoki S; From the Departments of Neurology (S.E.L., S. Arends, B.v.d.B., A.Y.D., P.A.v.D., K.K., L.W.G.L., W.V.R., J.R., C.V., B.C.J.), and Viroscience (A.A.v.d.E.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Department of Neurology (H.A., T.H.), Aarhus University Hospital, Denmark; Department of Neurology (G.A.), Mental Health and Sensory Organs (NESMOS), Faculty of Medicine and Psychology, University of Rome 'Sapienza,' Sant' Andrea Hospital, Italy; Department of Neurology (S. Arends), Haga Teaching Hospital, The Hague, the Netherlands; Department of Neurology (S. Attarian), Reference Centre for NMD, CHU Timone, Marseille, France; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, FLENI, Buenos Aires, Argentina; Division of Neurology (K.J.B., E.L.P.), Department of Medicine, Groote Schuur Hospital, University of Cape Town, South Africa; Department RH-MDC-Immunology (M.R.B., M.M.), Reinier de Graaf Gasthuis, Delft, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (B.v.d.B., F.H.V.), Franciscus Gasthuis & Vlietland, Schiedam, the Netherlands; Department of Neurology (P.V.d.B.), University Hospital St. Luc, University of Louvain, Brussels, Belgium; Department of Neurology (J.B.), Saarland University Medical School, Homburg (previous hospital), and MVZ Pfalzklinikum (J.B.), Kusel, Germany (current hospital); Department of Neurology (M.B.), Leeds Teaching Hospitals, United Kingdom; Department of Neurology (C.C., V.N.-H.), Neuromuscular Unit, Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Department of Neurology (D.R.C.), Johns Hopkins University, Baltimore, MD; Institute of Infection, Immunity and Inflammation (A.D., H.J.W.), University of Glasgow, United Kingdom; National Hospital Copenhagen (C.D.d.l.C.), Copenhagen, Denmark; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Alberta, Canada; Nuffield Department of Clinical Neurosciences (J.F., S.R.), University of Oxford, John Radcliffe Hospital, United Kingdom; Department of Neurology (T.G.-S., J.P.), Hospital Clínico de Santiago, Spain; Neurology, Neuromuscular Diseases, Electromyography (J.M.G.), Hospital for Special Surgery; Weill Medical College of Cornell University (J.M.G.), New York; Department of Neurology (K.C.G., B.S.), Tufts University School of Medicine, Boston, MA; Department of Neurology (V.G.), Montefiore Medical Center, New York; Department of Neurology (R.D.M.H.), King's College Hospital, London, United Kingdom; Department of Neurology (H.-P.H.), University of Düsseldorf, Germany; Brain and Mind Centre (H.-P.H.), University of Sydney, Australia; Department of Neurology (H.-P.H.), Medical University of Vienna, Austria; Laboratory of Gut-Brain Signaling (I.H., I.J., Z.I., Q.D.M.), Laboratory Sciences and Services Division, icddr,b, Dhaka, Bangladesh; Department of Neurology (J.V.H., S.H.S.), Odense University Hospital, Denmark; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, United Kingdom; Department of Neurology (S. Karafiath), Utah Valley University, Orem; Department of Neurology (H.D.K.), University Health Network, University of Toronto, ON, Canada; Department of Neurology (R.P.K., K.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (N.K.), University of Vermont Medical Centre, Burlington; Department of Neurology (M.K., S. Kusunoki), Kindai University, Faculty of Medicine, Osaka, Japan; Department of Neurology (L.W.G.L., L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (S. Kuwabara), Chiba University, Japan; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (L.M.-A., L.Q.), Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, Spain; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, United Kingdom; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Research Hospital, Milan University, Italy; Department of Clinical Neurophysiology (Y.P.), Reference Centre for NMD, CHU Nantes, France; Department of Neurology (R.R.), Hospital Británico, Buenos Aires, Argentina; Department of Immunology (W.V.R., A.P.T.-G., R.H., B.C.J.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Department of Neurology (S.R.), Oxford University Hospitals NHS Foundation Trust, John Radcliffe Hospital; Department of Neurology (R.C.R.), Cambridge University Hospitals NHS Foundation Trust, Addenbrooke's Hospital, Cambridge Biomedical Campus, United Kingdom; Department of Medicine (N.S., T.C.-Y.), University of Malaya, Kuala Lumpur; Department of Neurology (S.H.S.), University of Southern Denmark, Odense; Department of Clinical Neurophysiology (H.T.), Aarhus University Hospital, Denmark; and Hospital Universitario Marques de Valdecilla (M.J.S.T.), Santander, Cantabria, Spain.; Luijten LWG; From the Departments of Neurology (S.E.L., S. Arends, B.v.d.B., A.Y.D., P.A.v.D., K.K., L.W.G.L., W.V.R., J.R., C.V., B.C.J.), and Viroscience (A.A.v.d.E.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Department of Neurology (H.A., T.H.), Aarhus University Hospital, Denmark; Department of Neurology (G.A.), Mental Health and Sensory Organs (NESMOS), Faculty of Medicine and Psychology, University of Rome 'Sapienza,' Sant' Andrea Hospital, Italy; Department of Neurology (S. Arends), Haga Teaching Hospital, The Hague, the Netherlands; Department of Neurology (S. Attarian), Reference Centre for NMD, CHU Timone, Marseille, France; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, FLENI, Buenos Aires, Argentina; Division of Neurology (K.J.B., E.L.P.), Department of Medicine, Groote Schuur Hospital, University of Cape Town, South Africa; Department RH-MDC-Immunology (M.R.B., M.M.), Reinier de Graaf Gasthuis, Delft, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (B.v.d.B., F.H.V.), Franciscus Gasthuis & Vlietland, Schiedam, the Netherlands; Department of Neurology (P.V.d.B.), University Hospital St. Luc, University of Louvain, Brussels, Belgium; Department of Neurology (J.B.), Saarland University Medical School, Homburg (previous hospital), and MVZ Pfalzklinikum (J.B.), Kusel, Germany (current hospital); Department of Neurology (M.B.), Leeds Teaching Hospitals, United Kingdom; Department of Neurology (C.C., V.N.-H.), Neuromuscular Unit, Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Department of Neurology (D.R.C.), Johns Hopkins University, Baltimore, MD; Institute of Infection, Immunity and Inflammation (A.D., H.J.W.), University of Glasgow, United Kingdom; National Hospital Copenhagen (C.D.d.l.C.), Copenhagen, Denmark; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Alberta, Canada; Nuffield Department of Clinical Neurosciences (J.F., S.R.), University of Oxford, John Radcliffe Hospital, United Kingdom; Department of Neurology (T.G.-S., J.P.), Hospital Clínico de Santiago, Spain; Neurology, Neuromuscular Diseases, Electromyography (J.M.G.), Hospital for Special Surgery; Weill Medical College of Cornell University (J.M.G.), New York; Department of Neurology (K.C.G., B.S.), Tufts University School of Medicine, Boston, MA; Department of Neurology (V.G.), Montefiore Medical Center, New York; Department of Neurology (R.D.M.H.), King's College Hospital, London, United Kingdom; Department of Neurology (H.-P.H.), University of Düsseldorf, Germany; Brain and Mind Centre (H.-P.H.), University of Sydney, Australia; Department of Neurology (H.-P.H.), Medical University of Vienna, Austria; Laboratory of Gut-Brain Signaling (I.H., I.J., Z.I., Q.D.M.), Laboratory Sciences and Services Division, icddr,b, Dhaka, Bangladesh; Department of Neurology (J.V.H., S.H.S.), Odense University Hospital, Denmark; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, United Kingdom; Department of Neurology (S. Karafiath), Utah Valley University, Orem; Department of Neurology (H.D.K.), University Health Network, University of Toronto, ON, Canada; Department of Neurology (R.P.K., K.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (N.K.), University of Vermont Medical Centre, Burlington; Department of Neurology (M.K., S. Kusunoki), Kindai University, Faculty of Medicine, Osaka, Japan; Department of Neurology (L.W.G.L., L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (S. Kuwabara), Chiba University, Japan; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (L.M.-A., L.Q.), Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, Spain; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, United Kingdom; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Research Hospital, Milan University, Italy; Department of Clinical Neurophysiology (Y.P.), Reference Centre for NMD, CHU Nantes, France; Department of Neurology (R.R.), Hospital Británico, Buenos Aires, Argentina; Department of Immunology (W.V.R., A.P.T.-G., R.H., B.C.J.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Department of Neurology (S.R.), Oxford University Hospitals NHS Foundation Trust, John Radcliffe Hospital; Department of Neurology (R.C.R.), Cambridge University Hospitals NHS Foundation Trust, Addenbrooke's Hospital, Cambridge Biomedical Campus, United Kingdom; Department of Medicine (N.S., T.C.-Y.), University of Malaya, Kuala Lumpur; Department of Neurology (S.H.S.), University of Southern Denmark, Odense; Department of Clinical Neurophysiology (H.T.), Aarhus University Hospital, Denmark; and Hospital Universitario Marques de Valdecilla (M.J.S.T.), Santander, Cantabria, Spain.; Kuwabara S; From the Departments of Neurology (S.E.L., S. Arends, B.v.d.B., A.Y.D., P.A.v.D., K.K., L.W.G.L., W.V.R., J.R., C.V., B.C.J.), and Viroscience (A.A.v.d.E.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Department of Neurology (H.A., T.H.), Aarhus University Hospital, Denmark; Department of Neurology (G.A.), Mental Health and Sensory Organs (NESMOS), Faculty of Medicine and Psychology, University of Rome 'Sapienza,' Sant' Andrea Hospital, Italy; Department of Neurology (S. Arends), Haga Teaching Hospital, The Hague, the Netherlands; Department of Neurology (S. Attarian), Reference Centre for NMD, CHU Timone, Marseille, France; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, FLENI, Buenos Aires, Argentina; Division of Neurology (K.J.B., E.L.P.), Department of Medicine, Groote Schuur Hospital, University of Cape Town, South Africa; Department RH-MDC-Immunology (M.R.B., M.M.), Reinier de Graaf Gasthuis, Delft, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (B.v.d.B., F.H.V.), Franciscus Gasthuis & Vlietland, Schiedam, the Netherlands; Department of Neurology (P.V.d.B.), University Hospital St. Luc, University of Louvain, Brussels, Belgium; Department of Neurology (J.B.), Saarland University Medical School, Homburg (previous hospital), and MVZ Pfalzklinikum (J.B.), Kusel, Germany (current hospital); Department of Neurology (M.B.), Leeds Teaching Hospitals, United Kingdom; Department of Neurology (C.C., V.N.-H.), Neuromuscular Unit, Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Department of Neurology (D.R.C.), Johns Hopkins University, Baltimore, MD; Institute of Infection, Immunity and Inflammation (A.D., H.J.W.), University of Glasgow, United Kingdom; National Hospital Copenhagen (C.D.d.l.C.), Copenhagen, Denmark; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Alberta, Canada; Nuffield Department of Clinical Neurosciences (J.F., S.R.), University of Oxford, John Radcliffe Hospital, United Kingdom; Department of Neurology (T.G.-S., J.P.), Hospital Clínico de Santiago, Spain; Neurology, Neuromuscular Diseases, Electromyography (J.M.G.), Hospital for Special Surgery; Weill Medical College of Cornell University (J.M.G.), New York; Department of Neurology (K.C.G., B.S.), Tufts University School of Medicine, Boston, MA; Department of Neurology (V.G.), Montefiore Medical Center, New York; Department of Neurology (R.D.M.H.), King's College Hospital, London, United Kingdom; Department of Neurology (H.-P.H.), University of Düsseldorf, Germany; Brain and Mind Centre (H.-P.H.), University of Sydney, Australia; Department of Neurology (H.-P.H.), Medical University of Vienna, Austria; Laboratory of Gut-Brain Signaling (I.H., I.J., Z.I., Q.D.M.), Laboratory Sciences and Services Division, icddr,b, Dhaka, Bangladesh; Department of Neurology (J.V.H., S.H.S.), Odense University Hospital, Denmark; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, United Kingdom; Department of Neurology (S. Karafiath), Utah Valley University, Orem; Department of Neurology (H.D.K.), University Health Network, University of Toronto, ON, Canada; Department of Neurology (R.P.K., K.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (N.K.), University of Vermont Medical Centre, Burlington; Department of Neurology (M.K., S. Kusunoki), Kindai University, Faculty of Medicine, Osaka, Japan; Department of Neurology (L.W.G.L., L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (S. Kuwabara), Chiba University, Japan; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (L.M.-A., L.Q.), Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, Spain; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, United Kingdom; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Research Hospital, Milan University, Italy; Department of Clinical Neurophysiology (Y.P.), Reference Centre for NMD, CHU Nantes, France; Department of Neurology (R.R.), Hospital Británico, Buenos Aires, Argentina; Department of Immunology (W.V.R., A.P.T.-G., R.H., B.C.J.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Department of Neurology (S.R.), Oxford University Hospitals NHS Foundation Trust, John Radcliffe Hospital; Department of Neurology (R.C.R.), Cambridge University Hospitals NHS Foundation Trust, Addenbrooke's Hospital, Cambridge Biomedical Campus, United Kingdom; Department of Medicine (N.S., T.C.-Y.), University of Malaya, Kuala Lumpur; Department of Neurology (S.H.S.), University of Southern Denmark, Odense; Department of Clinical Neurophysiology (H.T.), Aarhus University Hospital, Denmark; and Hospital Universitario Marques de Valdecilla (M.J.S.T.), Santander, Cantabria, Spain.; Lee Pan E; From the Departments of Neurology (S.E.L., S. Arends, B.v.d.B., A.Y.D., P.A.v.D., K.K., L.W.G.L., W.V.R., J.R., C.V., B.C.J.), and Viroscience (A.A.v.d.E.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Department of Neurology (H.A., T.H.), Aarhus University Hospital, Denmark; Department of Neurology (G.A.), Mental Health and Sensory Organs (NESMOS), Faculty of Medicine and Psychology, University of Rome 'Sapienza,' Sant' Andrea Hospital, Italy; Department of Neurology (S. Arends), Haga Teaching Hospital, The Hague, the Netherlands; Department of Neurology (S. Attarian), Reference Centre for NMD, CHU Timone, Marseille, France; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, FLENI, Buenos Aires, Argentina; Division of Neurology (K.J.B., E.L.P.), Department of Medicine, Groote Schuur Hospital, University of Cape Town, South Africa; Department RH-MDC-Immunology (M.R.B., M.M.), Reinier de Graaf Gasthuis, Delft, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (B.v.d.B., F.H.V.), Franciscus Gasthuis & Vlietland, Schiedam, the Netherlands; Department of Neurology (P.V.d.B.), University Hospital St. Luc, University of Louvain, Brussels, Belgium; Department of Neurology (J.B.), Saarland University Medical School, Homburg (previous hospital), and MVZ Pfalzklinikum (J.B.), Kusel, Germany (current hospital); Department of Neurology (M.B.), Leeds Teaching Hospitals, United Kingdom; Department of Neurology (C.C., V.N.-H.), Neuromuscular Unit, Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Department of Neurology (D.R.C.), Johns Hopkins University, Baltimore, MD; Institute of Infection, Immunity and Inflammation (A.D., H.J.W.), University of Glasgow, United Kingdom; National Hospital Copenhagen (C.D.d.l.C.), Copenhagen, Denmark; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Alberta, Canada; Nuffield Department of Clinical Neurosciences (J.F., S.R.), University of Oxford, John Radcliffe Hospital, United Kingdom; Department of Neurology (T.G.-S., J.P.), Hospital Clínico de Santiago, Spain; Neurology, Neuromuscular Diseases, Electromyography (J.M.G.), Hospital for Special Surgery; Weill Medical College of Cornell University (J.M.G.), New York; Department of Neurology (K.C.G., B.S.), Tufts University School of Medicine, Boston, MA; Department of Neurology (V.G.), Montefiore Medical Center, New York; Department of Neurology (R.D.M.H.), King's College Hospital, London, United Kingdom; Department of Neurology (H.-P.H.), University of Düsseldorf, Germany; Brain and Mind Centre (H.-P.H.), University of Sydney, Australia; Department of Neurology (H.-P.H.), Medical University of Vienna, Austria; Laboratory of Gut-Brain Signaling (I.H., I.J., Z.I., Q.D.M.), Laboratory Sciences and Services Division, icddr,b, Dhaka, Bangladesh; Department of Neurology (J.V.H., S.H.S.), Odense University Hospital, Denmark; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, United Kingdom; Department of Neurology (S. Karafiath), Utah Valley University, Orem; Department of Neurology (H.D.K.), University Health Network, University of Toronto, ON, Canada; Department of Neurology (R.P.K., K.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (N.K.), University of Vermont Medical Centre, Burlington; Department of Neurology (M.K., S. Kusunoki), Kindai University, Faculty of Medicine, Osaka, Japan; Department of Neurology (L.W.G.L., L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (S. Kuwabara), Chiba University, Japan; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (L.M.-A., L.Q.), Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, Spain; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, United Kingdom; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Research Hospital, Milan University, Italy; Department of Clinical Neurophysiology (Y.P.), Reference Centre for NMD, CHU Nantes, France; Department of Neurology (R.R.), Hospital Británico, Buenos Aires, Argentina; Department of Immunology (W.V.R., A.P.T.-G., R.H., B.C.J.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Department of Neurology (S.R.), Oxford University Hospitals NHS Foundation Trust, John Radcliffe Hospital; Department of Neurology (R.C.R.), Cambridge University Hospitals NHS Foundation Trust, Addenbrooke's Hospital, Cambridge Biomedical Campus, United Kingdom; Department of Medicine (N.S., T.C.-Y.), University of Malaya, Kuala Lumpur; Department of Neurology (S.H.S.), University of Southern Denmark, Odense; Department of Clinical Neurophysiology (H.T.), Aarhus University Hospital, Denmark; and Hospital Universitario Marques de Valdecilla (M.J.S.T.), Santander, Cantabria, Spain.; Lehmann HC; From the Departments of Neurology (S.E.L., S. Arends, B.v.d.B., A.Y.D., P.A.v.D., K.K., L.W.G.L., W.V.R., J.R., C.V., B.C.J.), and Viroscience (A.A.v.d.E.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Department of Neurology (H.A., T.H.), Aarhus University Hospital, Denmark; Department of Neurology (G.A.), Mental Health and Sensory Organs (NESMOS), Faculty of Medicine and Psychology, University of Rome 'Sapienza,' Sant' Andrea Hospital, Italy; Department of Neurology (S. Arends), Haga Teaching Hospital, The Hague, the Netherlands; Department of Neurology (S. Attarian), Reference Centre for NMD, CHU Timone, Marseille, France; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, FLENI, Buenos Aires, Argentina; Division of Neurology (K.J.B., E.L.P.), Department of Medicine, Groote Schuur Hospital, University of Cape Town, South Africa; Department RH-MDC-Immunology (M.R.B., M.M.), Reinier de Graaf Gasthuis, Delft, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (B.v.d.B., F.H.V.), Franciscus Gasthuis & Vlietland, Schiedam, the Netherlands; Department of Neurology (P.V.d.B.), University Hospital St. Luc, University of Louvain, Brussels, Belgium; Department of Neurology (J.B.), Saarland University Medical School, Homburg (previous hospital), and MVZ Pfalzklinikum (J.B.), Kusel, Germany (current hospital); Department of Neurology (M.B.), Leeds Teaching Hospitals, United Kingdom; Department of Neurology (C.C., V.N.-H.), Neuromuscular Unit, Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Department of Neurology (D.R.C.), Johns Hopkins University, Baltimore, MD; Institute of Infection, Immunity and Inflammation (A.D., H.J.W.), University of Glasgow, United Kingdom; National Hospital Copenhagen (C.D.d.l.C.), Copenhagen, Denmark; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Alberta, Canada; Nuffield Department of Clinical Neurosciences (J.F., S.R.), University of Oxford, John Radcliffe Hospital, United Kingdom; Department of Neurology (T.G.-S., J.P.), Hospital Clínico de Santiago, Spain; Neurology, Neuromuscular Diseases, Electromyography (J.M.G.), Hospital for Special Surgery; Weill Medical College of Cornell University (J.M.G.), New York; Department of Neurology (K.C.G., B.S.), Tufts University School of Medicine, Boston, MA; Department of Neurology (V.G.), Montefiore Medical Center, New York; Department of Neurology (R.D.M.H.), King's College Hospital, London, United Kingdom; Department of Neurology (H.-P.H.), University of Düsseldorf, Germany; Brain and Mind Centre (H.-P.H.), University of Sydney, Australia; Department of Neurology (H.-P.H.), Medical University of Vienna, Austria; Laboratory of Gut-Brain Signaling (I.H., I.J., Z.I., Q.D.M.), Laboratory Sciences and Services Division, icddr,b, Dhaka, Bangladesh; Department of Neurology (J.V.H., S.H.S.), Odense University Hospital, Denmark; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, United Kingdom; Department of Neurology (S. Karafiath), Utah Valley University, Orem; Department of Neurology (H.D.K.), University Health Network, University of Toronto, ON, Canada; Department of Neurology (R.P.K., K.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (N.K.), University of Vermont Medical Centre, Burlington; Department of Neurology (M.K., S. Kusunoki), Kindai University, Faculty of Medicine, Osaka, Japan; Department of Neurology (L.W.G.L., L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (S. Kuwabara), Chiba University, Japan; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (L.M.-A., L.Q.), Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, Spain; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, United Kingdom; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Research Hospital, Milan University, Italy; Department of Clinical Neurophysiology (Y.P.), Reference Centre for NMD, CHU Nantes, France; Department of Neurology (R.R.), Hospital Británico, Buenos Aires, Argentina; Department of Immunology (W.V.R., A.P.T.-G., R.H., B.C.J.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Department of Neurology (S.R.), Oxford University Hospitals NHS Foundation Trust, John Radcliffe Hospital; Department of Neurology (R.C.R.), Cambridge University Hospitals NHS Foundation Trust, Addenbrooke's Hospital, Cambridge Biomedical Campus, United Kingdom; Department of Medicine (N.S., T.C.-Y.), University of Malaya, Kuala Lumpur; Department of Neurology (S.H.S.), University of Southern Denmark, Odense; Department of Clinical Neurophysiology (H.T.), Aarhus University Hospital, Denmark; and Hospital Universitario Marques de Valdecilla (M.J.S.T.), Santander, Cantabria, Spain.; Maas M; From the Departments of Neurology (S.E.L., S. Arends, B.v.d.B., A.Y.D., P.A.v.D., K.K., L.W.G.L., W.V.R., J.R., C.V., B.C.J.), and Viroscience (A.A.v.d.E.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Department of Neurology (H.A., T.H.), Aarhus University Hospital, Denmark; Department of Neurology (G.A.), Mental Health and Sensory Organs (NESMOS), Faculty of Medicine and Psychology, University of Rome 'Sapienza,' Sant' Andrea Hospital, Italy; Department of Neurology (S. Arends), Haga Teaching Hospital, The Hague, the Netherlands; Department of Neurology (S. Attarian), Reference Centre for NMD, CHU Timone, Marseille, France; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, FLENI, Buenos Aires, Argentina; Division of Neurology (K.J.B., E.L.P.), Department of Medicine, Groote Schuur Hospital, University of Cape Town, South Africa; Department RH-MDC-Immunology (M.R.B., M.M.), Reinier de Graaf Gasthuis, Delft, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (B.v.d.B., F.H.V.), Franciscus Gasthuis & Vlietland, Schiedam, the Netherlands; Department of Neurology (P.V.d.B.), University Hospital St. Luc, University of Louvain, Brussels, Belgium; Department of Neurology (J.B.), Saarland University Medical School, Homburg (previous hospital), and MVZ Pfalzklinikum (J.B.), Kusel, Germany (current hospital); Department of Neurology (M.B.), Leeds Teaching Hospitals, United Kingdom; Department of Neurology (C.C., V.N.-H.), Neuromuscular Unit, Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Department of Neurology (D.R.C.), Johns Hopkins University, Baltimore, MD; Institute of Infection, Immunity and Inflammation (A.D., H.J.W.), University of Glasgow, United Kingdom; National Hospital Copenhagen (C.D.d.l.C.), Copenhagen, Denmark; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Alberta, Canada; Nuffield Department of Clinical Neurosciences (J.F., S.R.), University of Oxford, John Radcliffe Hospital, United Kingdom; Department of Neurology (T.G.-S., J.P.), Hospital Clínico de Santiago, Spain; Neurology, Neuromuscular Diseases, Electromyography (J.M.G.), Hospital for Special Surgery; Weill Medical College of Cornell University (J.M.G.), New York; Department of Neurology (K.C.G., B.S.), Tufts University School of Medicine, Boston, MA; Department of Neurology (V.G.), Montefiore Medical Center, New York; Department of Neurology (R.D.M.H.), King's College Hospital, London, United Kingdom; Department of Neurology (H.-P.H.), University of Düsseldorf, Germany; Brain and Mind Centre (H.-P.H.), University of Sydney, Australia; Department of Neurology (H.-P.H.), Medical University of Vienna, Austria; Laboratory of Gut-Brain Signaling (I.H., I.J., Z.I., Q.D.M.), Laboratory Sciences and Services Division, icddr,b, Dhaka, Bangladesh; Department of Neurology (J.V.H., S.H.S.), Odense University Hospital, Denmark; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, United Kingdom; Department of Neurology (S. Karafiath), Utah Valley University, Orem; Department of Neurology (H.D.K.), University Health Network, University of Toronto, ON, Canada; Department of Neurology (R.P.K., K.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (N.K.), University of Vermont Medical Centre, Burlington; Department of Neurology (M.K., S. Kusunoki), Kindai University, Faculty of Medicine, Osaka, Japan; Department of Neurology (L.W.G.L., L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (S. Kuwabara), Chiba University, Japan; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (L.M.-A., L.Q.), Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, Spain; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, United Kingdom; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Research Hospital, Milan University, Italy; Department of Clinical Neurophysiology (Y.P.), Reference Centre for NMD, CHU Nantes, France; Department of Neurology (R.R.), Hospital Británico, Buenos Aires, Argentina; Department of Immunology (W.V.R., A.P.T.-G., R.H., B.C.J.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Department of Neurology (S.R.), Oxford University Hospitals NHS Foundation Trust, John Radcliffe Hospital; Department of Neurology (R.C.R.), Cambridge University Hospitals NHS Foundation Trust, Addenbrooke's Hospital, Cambridge Biomedical Campus, United Kingdom; Department of Medicine (N.S., T.C.-Y.), University of Malaya, Kuala Lumpur; Department of Neurology (S.H.S.), University of Southern Denmark, Odense; Department of Clinical Neurophysiology (H.T.), Aarhus University Hospital, Denmark; and Hospital Universitario Marques de Valdecilla (M.J.S.T.), Santander, Cantabria, Spain.; Martín-Aguilar L; From the Departments of Neurology (S.E.L., S. Arends, B.v.d.B., A.Y.D., P.A.v.D., K.K., L.W.G.L., W.V.R., J.R., C.V., B.C.J.), and Viroscience (A.A.v.d.E.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Department of Neurology (H.A., T.H.), Aarhus University Hospital, Denmark; Department of Neurology (G.A.), Mental Health and Sensory Organs (NESMOS), Faculty of Medicine and Psychology, University of Rome 'Sapienza,' Sant' Andrea Hospital, Italy; Department of Neurology (S. Arends), Haga Teaching Hospital, The Hague, the Netherlands; Department of Neurology (S. Attarian), Reference Centre for NMD, CHU Timone, Marseille, France; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, FLENI, Buenos Aires, Argentina; Division of Neurology (K.J.B., E.L.P.), Department of Medicine, Groote Schuur Hospital, University of Cape Town, South Africa; Department RH-MDC-Immunology (M.R.B., M.M.), Reinier de Graaf Gasthuis, Delft, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (B.v.d.B., F.H.V.), Franciscus Gasthuis & Vlietland, Schiedam, the Netherlands; Department of Neurology (P.V.d.B.), University Hospital St. Luc, University of Louvain, Brussels, Belgium; Department of Neurology (J.B.), Saarland University Medical School, Homburg (previous hospital), and MVZ Pfalzklinikum (J.B.), Kusel, Germany (current hospital); Department of Neurology (M.B.), Leeds Teaching Hospitals, United Kingdom; Department of Neurology (C.C., V.N.-H.), Neuromuscular Unit, Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Department of Neurology (D.R.C.), Johns Hopkins University, Baltimore, MD; Institute of Infection, Immunity and Inflammation (A.D., H.J.W.), University of Glasgow, United Kingdom; National Hospital Copenhagen (C.D.d.l.C.), Copenhagen, Denmark; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Alberta, Canada; Nuffield Department of Clinical Neurosciences (J.F., S.R.), University of Oxford, John Radcliffe Hospital, United Kingdom; Department of Neurology (T.G.-S., J.P.), Hospital Clínico de Santiago, Spain; Neurology, Neuromuscular Diseases, Electromyography (J.M.G.), Hospital for Special Surgery; Weill Medical College of Cornell University (J.M.G.), New York; Department of Neurology (K.C.G., B.S.), Tufts University School of Medicine, Boston, MA; Department of Neurology (V.G.), Montefiore Medical Center, New York; Department of Neurology (R.D.M.H.), King's College Hospital, London, United Kingdom; Department of Neurology (H.-P.H.), University of Düsseldorf, Germany; Brain and Mind Centre (H.-P.H.), University of Sydney, Australia; Department of Neurology (H.-P.H.), Medical University of Vienna, Austria; Laboratory of Gut-Brain Signaling (I.H., I.J., Z.I., Q.D.M.), Laboratory Sciences and Services Division, icddr,b, Dhaka, Bangladesh; Department of Neurology (J.V.H., S.H.S.), Odense University Hospital, Denmark; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, United Kingdom; Department of Neurology (S. Karafiath), Utah Valley University, Orem; Department of Neurology (H.D.K.), University Health Network, University of Toronto, ON, Canada; Department of Neurology (R.P.K., K.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (N.K.), University of Vermont Medical Centre, Burlington; Department of Neurology (M.K., S. Kusunoki), Kindai University, Faculty of Medicine, Osaka, Japan; Department of Neurology (L.W.G.L., L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (S. Kuwabara), Chiba University, Japan; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (L.M.-A., L.Q.), Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, Spain; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, United Kingdom; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Research Hospital, Milan University, Italy; Department of Clinical Neurophysiology (Y.P.), Reference Centre for NMD, CHU Nantes, France; Department of Neurology (R.R.), Hospital Británico, Buenos Aires, Argentina; Department of Immunology (W.V.R., A.P.T.-G., R.H., B.C.J.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Department of Neurology (S.R.), Oxford University Hospitals NHS Foundation Trust, John Radcliffe Hospital; Department of Neurology (R.C.R.), Cambridge University Hospitals NHS Foundation Trust, Addenbrooke's Hospital, Cambridge Biomedical Campus, United Kingdom; Department of Medicine (N.S., T.C.-Y.), University of Malaya, Kuala Lumpur; Department of Neurology (S.H.S.), University of Southern Denmark, Odense; Department of Clinical Neurophysiology (H.T.), Aarhus University Hospital, Denmark; and Hospital Universitario Marques de Valdecilla (M.J.S.T.), Santander, Cantabria, Spain.; Miller JAL; From the Departments of Neurology (S.E.L., S. Arends, B.v.d.B., A.Y.D., P.A.v.D., K.K., L.W.G.L., W.V.R., J.R., C.V., B.C.J.), and Viroscience (A.A.v.d.E.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Department of Neurology (H.A., T.H.), Aarhus University Hospital, Denmark; Department of Neurology (G.A.), Mental Health and Sensory Organs (NESMOS), Faculty of Medicine and Psychology, University of Rome 'Sapienza,' Sant' Andrea Hospital, Italy; Department of Neurology (S. Arends), Haga Teaching Hospital, The Hague, the Netherlands; Department of Neurology (S. Attarian), Reference Centre for NMD, CHU Timone, Marseille, France; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, FLENI, Buenos Aires, Argentina; Division of Neurology (K.J.B., E.L.P.), Department of Medicine, Groote Schuur Hospital, University of Cape Town, South Africa; Department RH-MDC-Immunology (M.R.B., M.M.), Reinier de Graaf Gasthuis, Delft, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (B.v.d.B., F.H.V.), Franciscus Gasthuis & Vlietland, Schiedam, the Netherlands; Department of Neurology (P.V.d.B.), University Hospital St. Luc, University of Louvain, Brussels, Belgium; Department of Neurology (J.B.), Saarland University Medical School, Homburg (previous hospital), and MVZ Pfalzklinikum (J.B.), Kusel, Germany (current hospital); Department of Neurology (M.B.), Leeds Teaching Hospitals, United Kingdom; Department of Neurology (C.C., V.N.-H.), Neuromuscular Unit, Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Department of Neurology (D.R.C.), Johns Hopkins University, Baltimore, MD; Institute of Infection, Immunity and Inflammation (A.D., H.J.W.), University of Glasgow, United Kingdom; National Hospital Copenhagen (C.D.d.l.C.), Copenhagen, Denmark; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Alberta, Canada; Nuffield Department of Clinical Neurosciences (J.F., S.R.), University of Oxford, John Radcliffe Hospital, United Kingdom; Department of Neurology (T.G.-S., J.P.), Hospital Clínico de Santiago, Spain; Neurology, Neuromuscular Diseases, Electromyography (J.M.G.), Hospital for Special Surgery; Weill Medical College of Cornell University (J.M.G.), New York; Department of Neurology (K.C.G., B.S.), Tufts University School of Medicine, Boston, MA; Department of Neurology (V.G.), Montefiore Medical Center, New York; Department of Neurology (R.D.M.H.), King's College Hospital, London, United Kingdom; Department of Neurology (H.-P.H.), University of Düsseldorf, Germany; Brain and Mind Centre (H.-P.H.), University of Sydney, Australia; Department of Neurology (H.-P.H.), Medical University of Vienna, Austria; Laboratory of Gut-Brain Signaling (I.H., I.J., Z.I., Q.D.M.), Laboratory Sciences and Services Division, icddr,b, Dhaka, Bangladesh; Department of Neurology (J.V.H., S.H.S.), Odense University Hospital, Denmark; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, United Kingdom; Department of Neurology (S. Karafiath), Utah Valley University, Orem; Department of Neurology (H.D.K.), University Health Network, University of Toronto, ON, Canada; Department of Neurology (R.P.K., K.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (N.K.), University of Vermont Medical Centre, Burlington; Department of Neurology (M.K., S. Kusunoki), Kindai University, Faculty of Medicine, Osaka, Japan; Department of Neurology (L.W.G.L., L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (S. Kuwabara), Chiba University, Japan; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (L.M.-A., L.Q.), Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, Spain; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, United Kingdom; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Research Hospital, Milan University, Italy; Department of Clinical Neurophysiology (Y.P.), Reference Centre for NMD, CHU Nantes, France; Department of Neurology (R.R.), Hospital Británico, Buenos Aires, Argentina; Department of Immunology (W.V.R., A.P.T.-G., R.H., B.C.J.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Department of Neurology (S.R.), Oxford University Hospitals NHS Foundation Trust, John Radcliffe Hospital; Department of Neurology (R.C.R.), Cambridge University Hospitals NHS Foundation Trust, Addenbrooke's Hospital, Cambridge Biomedical Campus, United Kingdom; Department of Medicine (N.S., T.C.-Y.), University of Malaya, Kuala Lumpur; Department of Neurology (S.H.S.), University of Southern Denmark, Odense; Department of Clinical Neurophysiology (H.T.), Aarhus University Hospital, Denmark; and Hospital Universitario Marques de Valdecilla (M.J.S.T.), Santander, Cantabria, Spain.; Mohammad QD; From the Departments of Neurology (S.E.L., S. Arends, B.v.d.B., A.Y.D., P.A.v.D., K.K., L.W.G.L., W.V.R., J.R., C.V., B.C.J.), and Viroscience (A.A.v.d.E.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Department of Neurology (H.A., T.H.), Aarhus University Hospital, Denmark; Department of Neurology (G.A.), Mental Health and Sensory Organs (NESMOS), Faculty of Medicine and Psychology, University of Rome 'Sapienza,' Sant' Andrea Hospital, Italy; Department of Neurology (S. Arends), Haga Teaching Hospital, The Hague, the Netherlands; Department of Neurology (S. Attarian), Reference Centre for NMD, CHU Timone, Marseille, France; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, FLENI, Buenos Aires, Argentina; Division of Neurology (K.J.B., E.L.P.), Department of Medicine, Groote Schuur Hospital, University of Cape Town, South Africa; Department RH-MDC-Immunology (M.R.B., M.M.), Reinier de Graaf Gasthuis, Delft, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (B.v.d.B., F.H.V.), Franciscus Gasthuis & Vlietland, Schiedam, the Netherlands; Department of Neurology (P.V.d.B.), University Hospital St. Luc, University of Louvain, Brussels, Belgium; Department of Neurology (J.B.), Saarland University Medical School, Homburg (previous hospital), and MVZ Pfalzklinikum (J.B.), Kusel, Germany (current hospital); Department of Neurology (M.B.), Leeds Teaching Hospitals, United Kingdom; Department of Neurology (C.C., V.N.-H.), Neuromuscular Unit, Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Department of Neurology (D.R.C.), Johns Hopkins University, Baltimore, MD; Institute of Infection, Immunity and Inflammation (A.D., H.J.W.), University of Glasgow, United Kingdom; National Hospital Copenhagen (C.D.d.l.C.), Copenhagen, Denmark; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Alberta, Canada; Nuffield Department of Clinical Neurosciences (J.F., S.R.), University of Oxford, John Radcliffe Hospital, United Kingdom; Department of Neurology (T.G.-S., J.P.), Hospital Clínico de Santiago, Spain; Neurology, Neuromuscular Diseases, Electromyography (J.M.G.), Hospital for Special Surgery; Weill Medical College of Cornell University (J.M.G.), New York; Department of Neurology (K.C.G., B.S.), Tufts University School of Medicine, Boston, MA; Department of Neurology (V.G.), Montefiore Medical Center, New York; Department of Neurology (R.D.M.H.), King's College Hospital, London, United Kingdom; Department of Neurology (H.-P.H.), University of Düsseldorf, Germany; Brain and Mind Centre (H.-P.H.), University of Sydney, Australia; Department of Neurology (H.-P.H.), Medical University of Vienna, Austria; Laboratory of Gut-Brain Signaling (I.H., I.J., Z.I., Q.D.M.), Laboratory Sciences and Services Division, icddr,b, Dhaka, Bangladesh; Department of Neurology (J.V.H., S.H.S.), Odense University Hospital, Denmark; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, United Kingdom; Department of Neurology (S. Karafiath), Utah Valley University, Orem; Department of Neurology (H.D.K.), University Health Network, University of Toronto, ON, Canada; Department of Neurology (R.P.K., K.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (N.K.), University of Vermont Medical Centre, Burlington; Department of Neurology (M.K., S. Kusunoki), Kindai University, Faculty of Medicine, Osaka, Japan; Department of Neurology (L.W.G.L., L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (S. Kuwabara), Chiba University, Japan; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (L.M.-A., L.Q.), Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, Spain; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, United Kingdom; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Research Hospital, Milan University, Italy; Department of Clinical Neurophysiology (Y.P.), Reference Centre for NMD, CHU Nantes, France; Department of Neurology (R.R.), Hospital Británico, Buenos Aires, Argentina; Department of Immunology (W.V.R., A.P.T.-G., R.H., B.C.J.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Department of Neurology (S.R.), Oxford University Hospitals NHS Foundation Trust, John Radcliffe Hospital; Department of Neurology (R.C.R.), Cambridge University Hospitals NHS Foundation Trust, Addenbrooke's Hospital, Cambridge Biomedical Campus, United Kingdom; Department of Medicine (N.S., T.C.-Y.), University of Malaya, Kuala Lumpur; Department of Neurology (S.H.S.), University of Southern Denmark, Odense; Department of Clinical Neurophysiology (H.T.), Aarhus University Hospital, Denmark; and Hospital Universitario Marques de Valdecilla (M.J.S.T.), Santander, Cantabria, Spain.; Monges S; From the Departments of Neurology (S.E.L., S. Arends, B.v.d.B., A.Y.D., P.A.v.D., K.K., L.W.G.L., W.V.R., J.R., C.V., B.C.J.), and Viroscience (A.A.v.d.E.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Department of Neurology (H.A., T.H.), Aarhus University Hospital, Denmark; Department of Neurology (G.A.), Mental Health and Sensory Organs (NESMOS), Faculty of Medicine and Psychology, University of Rome 'Sapienza,' Sant' Andrea Hospital, Italy; Department of Neurology (S. Arends), Haga Teaching Hospital, The Hague, the Netherlands; Department of Neurology (S. Attarian), Reference Centre for NMD, CHU Timone, Marseille, France; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, FLENI, Buenos Aires, Argentina; Division of Neurology (K.J.B., E.L.P.), Department of Medicine, Groote Schuur Hospital, University of Cape Town, South Africa; Department RH-MDC-Immunology (M.R.B., M.M.), Reinier de Graaf Gasthuis, Delft, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (B.v.d.B., F.H.V.), Franciscus Gasthuis & Vlietland, Schiedam, the Netherlands; Department of Neurology (P.V.d.B.), University Hospital St. Luc, University of Louvain, Brussels, Belgium; Department of Neurology (J.B.), Saarland University Medical School, Homburg (previous hospital), and MVZ Pfalzklinikum (J.B.), Kusel, Germany (current hospital); Department of Neurology (M.B.), Leeds Teaching Hospitals, United Kingdom; Department of Neurology (C.C., V.N.-H.), Neuromuscular Unit, Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Department of Neurology (D.R.C.), Johns Hopkins University, Baltimore, MD; Institute of Infection, Immunity and Inflammation (A.D., H.J.W.), University of Glasgow, United Kingdom; National Hospital Copenhagen (C.D.d.l.C.), Copenhagen, Denmark; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Alberta, Canada; Nuffield Department of Clinical Neurosciences (J.F., S.R.), University of Oxford, John Radcliffe Hospital, United Kingdom; Department of Neurology (T.G.-S., J.P.), Hospital Clínico de Santiago, Spain; Neurology, Neuromuscular Diseases, Electromyography (J.M.G.), Hospital for Special Surgery; Weill Medical College of Cornell University (J.M.G.), New York; Department of Neurology (K.C.G., B.S.), Tufts University School of Medicine, Boston, MA; Department of Neurology (V.G.), Montefiore Medical Center, New York; Department of Neurology (R.D.M.H.), King's College Hospital, London, United Kingdom; Department of Neurology (H.-P.H.), University of Düsseldorf, Germany; Brain and Mind Centre (H.-P.H.), University of Sydney, Australia; Department of Neurology (H.-P.H.), Medical University of Vienna, Austria; Laboratory of Gut-Brain Signaling (I.H., I.J., Z.I., Q.D.M.), Laboratory Sciences and Services Division, icddr,b, Dhaka, Bangladesh; Department of Neurology (J.V.H., S.H.S.), Odense University Hospital, Denmark; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, United Kingdom; Department of Neurology (S. Karafiath), Utah Valley University, Orem; Department of Neurology (H.D.K.), University Health Network, University of Toronto, ON, Canada; Department of Neurology (R.P.K., K.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (N.K.), University of Vermont Medical Centre, Burlington; Department of Neurology (M.K., S. Kusunoki), Kindai University, Faculty of Medicine, Osaka, Japan; Department of Neurology (L.W.G.L., L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (S. Kuwabara), Chiba University, Japan; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (L.M.-A., L.Q.), Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, Spain; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, United Kingdom; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Research Hospital, Milan University, Italy; Department of Clinical Neurophysiology (Y.P.), Reference Centre for NMD, CHU Nantes, France; Department of Neurology (R.R.), Hospital Británico, Buenos Aires, Argentina; Department of Immunology (W.V.R., A.P.T.-G., R.H., B.C.J.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Department of Neurology (S.R.), Oxford University Hospitals NHS Foundation Trust, John Radcliffe Hospital; Department of Neurology (R.C.R.), Cambridge University Hospitals NHS Foundation Trust, Addenbrooke's Hospital, Cambridge Biomedical Campus, United Kingdom; Department of Medicine (N.S., T.C.-Y.), University of Malaya, Kuala Lumpur; Department of Neurology (S.H.S.), University of Southern Denmark, Odense; Department of Clinical Neurophysiology (H.T.), Aarhus University Hospital, Denmark; and Hospital Universitario Marques de Valdecilla (M.J.S.T.), Santander, Cantabria, Spain.; Nedkova-Hristova V; From the Departments of Neurology (S.E.L., S. Arends, B.v.d.B., A.Y.D., P.A.v.D., K.K., L.W.G.L., W.V.R., J.R., C.V., B.C.J.), and Viroscience (A.A.v.d.E.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Department of Neurology (H.A., T.H.), Aarhus University Hospital, Denmark; Department of Neurology (G.A.), Mental Health and Sensory Organs (NESMOS), Faculty of Medicine and Psychology, University of Rome 'Sapienza,' Sant' Andrea Hospital, Italy; Department of Neurology (S. Arends), Haga Teaching Hospital, The Hague, the Netherlands; Department of Neurology (S. Attarian), Reference Centre for NMD, CHU Timone, Marseille, France; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, FLENI, Buenos Aires, Argentina; Division of Neurology (K.J.B., E.L.P.), Department of Medicine, Groote Schuur Hospital, University of Cape Town, South Africa; Department RH-MDC-Immunology (M.R.B., M.M.), Reinier de Graaf Gasthuis, Delft, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (B.v.d.B., F.H.V.), Franciscus Gasthuis & Vlietland, Schiedam, the Netherlands; Department of Neurology (P.V.d.B.), University Hospital St. Luc, University of Louvain, Brussels, Belgium; Department of Neurology (J.B.), Saarland University Medical School, Homburg (previous hospital), and MVZ Pfalzklinikum (J.B.), Kusel, Germany (current hospital); Department of Neurology (M.B.), Leeds Teaching Hospitals, United Kingdom; Department of Neurology (C.C., V.N.-H.), Neuromuscular Unit, Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Department of Neurology (D.R.C.), Johns Hopkins University, Baltimore, MD; Institute of Infection, Immunity and Inflammation (A.D., H.J.W.), University of Glasgow, United Kingdom; National Hospital Copenhagen (C.D.d.l.C.), Copenhagen, Denmark; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Alberta, Canada; Nuffield Department of Clinical Neurosciences (J.F., S.R.), University of Oxford, John Radcliffe Hospital, United Kingdom; Department of Neurology (T.G.-S., J.P.), Hospital Clínico de Santiago, Spain; Neurology, Neuromuscular Diseases, Electromyography (J.M.G.), Hospital for Special Surgery; Weill Medical College of Cornell University (J.M.G.), New York; Department of Neurology (K.C.G., B.S.), Tufts University School of Medicine, Boston, MA; Department of Neurology (V.G.), Montefiore Medical Center, New York; Department of Neurology (R.D.M.H.), King's College Hospital, London, United Kingdom; Department of Neurology (H.-P.H.), University of Düsseldorf, Germany; Brain and Mind Centre (H.-P.H.), University of Sydney, Australia; Department of Neurology (H.-P.H.), Medical University of Vienna, Austria; Laboratory of Gut-Brain Signaling (I.H., I.J., Z.I., Q.D.M.), Laboratory Sciences and Services Division, icddr,b, Dhaka, Bangladesh; Department of Neurology (J.V.H., S.H.S.), Odense University Hospital, Denmark; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, United Kingdom; Department of Neurology (S. Karafiath), Utah Valley University, Orem; Department of Neurology (H.D.K.), University Health Network, University of Toronto, ON, Canada; Department of Neurology (R.P.K., K.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (N.K.), University of Vermont Medical Centre, Burlington; Department of Neurology (M.K., S. Kusunoki), Kindai University, Faculty of Medicine, Osaka, Japan; Department of Neurology (L.W.G.L., L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (S. Kuwabara), Chiba University, Japan; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (L.M.-A., L.Q.), Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, Spain; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, United Kingdom; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Research Hospital, Milan University, Italy; Department of Clinical Neurophysiology (Y.P.), Reference Centre for NMD, CHU Nantes, France; Department of Neurology (R.R.), Hospital Británico, Buenos Aires, Argentina; Department of Immunology (W.V.R., A.P.T.-G., R.H., B.C.J.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Department of Neurology (S.R.), Oxford University Hospitals NHS Foundation Trust, John Radcliffe Hospital; Department of Neurology (R.C.R.), Cambridge University Hospitals NHS Foundation Trust, Addenbrooke's Hospital, Cambridge Biomedical Campus, United Kingdom; Department of Medicine (N.S., T.C.-Y.), University of Malaya, Kuala Lumpur; Department of Neurology (S.H.S.), University of Southern Denmark, Odense; Department of Clinical Neurophysiology (H.T.), Aarhus University Hospital, Denmark; and Hospital Universitario Marques de Valdecilla (M.J.S.T.), Santander, Cantabria, Spain.; Nobile-Orazio E; From the Departments of Neurology (S.E.L., S. Arends, B.v.d.B., A.Y.D., P.A.v.D., K.K., L.W.G.L., W.V.R., J.R., C.V., B.C.J.), and Viroscience (A.A.v.d.E.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Department of Neurology (H.A., T.H.), Aarhus University Hospital, Denmark; Department of Neurology (G.A.), Mental Health and Sensory Organs (NESMOS), Faculty of Medicine and Psychology, University of Rome 'Sapienza,' Sant' Andrea Hospital, Italy; Department of Neurology (S. Arends), Haga Teaching Hospital, The Hague, the Netherlands; Department of Neurology (S. Attarian), Reference Centre for NMD, CHU Timone, Marseille, France; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, FLENI, Buenos Aires, Argentina; Division of Neurology (K.J.B., E.L.P.), Department of Medicine, Groote Schuur Hospital, University of Cape Town, South Africa; Department RH-MDC-Immunology (M.R.B., M.M.), Reinier de Graaf Gasthuis, Delft, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (B.v.d.B., F.H.V.), Franciscus Gasthuis & Vlietland, Schiedam, the Netherlands; Department of Neurology (P.V.d.B.), University Hospital St. Luc, University of Louvain, Brussels, Belgium; Department of Neurology (J.B.), Saarland University Medical School, Homburg (previous hospital), and MVZ Pfalzklinikum (J.B.), Kusel, Germany (current hospital); Department of Neurology (M.B.), Leeds Teaching Hospitals, United Kingdom; Department of Neurology (C.C., V.N.-H.), Neuromuscular Unit, Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Department of Neurology (D.R.C.), Johns Hopkins University, Baltimore, MD; Institute of Infection, Immunity and Inflammation (A.D., H.J.W.), University of Glasgow, United Kingdom; National Hospital Copenhagen (C.D.d.l.C.), Copenhagen, Denmark; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Alberta, Canada; Nuffield Department of Clinical Neurosciences (J.F., S.R.), University of Oxford, John Radcliffe Hospital, United Kingdom; Department of Neurology (T.G.-S., J.P.), Hospital Clínico de Santiago, Spain; Neurology, Neuromuscular Diseases, Electromyography (J.M.G.), Hospital for Special Surgery; Weill Medical College of Cornell University (J.M.G.), New York; Department of Neurology (K.C.G., B.S.), Tufts University School of Medicine, Boston, MA; Department of Neurology (V.G.), Montefiore Medical Center, New York; Department of Neurology (R.D.M.H.), King's College Hospital, London, United Kingdom; Department of Neurology (H.-P.H.), University of Düsseldorf, Germany; Brain and Mind Centre (H.-P.H.), University of Sydney, Australia; Department of Neurology (H.-P.H.), Medical University of Vienna, Austria; Laboratory of Gut-Brain Signaling (I.H., I.J., Z.I., Q.D.M.), Laboratory Sciences and Services Division, icddr,b, Dhaka, Bangladesh; Department of Neurology (J.V.H., S.H.S.), Odense University Hospital, Denmark; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, United Kingdom; Department of Neurology (S. Karafiath), Utah Valley University, Orem; Department of Neurology (H.D.K.), University Health Network, University of Toronto, ON, Canada; Department of Neurology (R.P.K., K.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (N.K.), University of Vermont Medical Centre, Burlington; Department of Neurology (M.K., S. Kusunoki), Kindai University, Faculty of Medicine, Osaka, Japan; Department of Neurology (L.W.G.L., L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (S. Kuwabara), Chiba University, Japan; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (L.M.-A., L.Q.), Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, Spain; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, United Kingdom; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Research Hospital, Milan University, Italy; Department of Clinical Neurophysiology (Y.P.), Reference Centre for NMD, CHU Nantes, France; Department of Neurology (R.R.), Hospital Británico, Buenos Aires, Argentina; Department of Immunology (W.V.R., A.P.T.-G., R.H., B.C.J.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Department of Neurology (S.R.), Oxford University Hospitals NHS Foundation Trust, John Radcliffe Hospital; Department of Neurology (R.C.R.), Cambridge University Hospitals NHS Foundation Trust, Addenbrooke's Hospital, Cambridge Biomedical Campus, United Kingdom; Department of Medicine (N.S., T.C.-Y.), University of Malaya, Kuala Lumpur; Department of Neurology (S.H.S.), University of Southern Denmark, Odense; Department of Clinical Neurophysiology (H.T.), Aarhus University Hospital, Denmark; and Hospital Universitario Marques de Valdecilla (M.J.S.T.), Santander, Cantabria, Spain.; Pardo J; From the Departments of Neurology (S.E.L., S. Arends, B.v.d.B., A.Y.D., P.A.v.D., K.K., L.W.G.L., W.V.R., J.R., C.V., B.C.J.), and Viroscience (A.A.v.d.E.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Department of Neurology (H.A., T.H.), Aarhus University Hospital, Denmark; Department of Neurology (G.A.), Mental Health and Sensory Organs (NESMOS), Faculty of Medicine and Psychology, University of Rome 'Sapienza,' Sant' Andrea Hospital, Italy; Department of Neurology (S. Arends), Haga Teaching Hospital, The Hague, the Netherlands; Department of Neurology (S. Attarian), Reference Centre for NMD, CHU Timone, Marseille, France; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, FLENI, Buenos Aires, Argentina; Division of Neurology (K.J.B., E.L.P.), Department of Medicine, Groote Schuur Hospital, University of Cape Town, South Africa; Department RH-MDC-Immunology (M.R.B., M.M.), Reinier de Graaf Gasthuis, Delft, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (B.v.d.B., F.H.V.), Franciscus Gasthuis & Vlietland, Schiedam, the Netherlands; Department of Neurology (P.V.d.B.), University Hospital St. Luc, University of Louvain, Brussels, Belgium; Department of Neurology (J.B.), Saarland University Medical School, Homburg (previous hospital), and MVZ Pfalzklinikum (J.B.), Kusel, Germany (current hospital); Department of Neurology (M.B.), Leeds Teaching Hospitals, United Kingdom; Department of Neurology (C.C., V.N.-H.), Neuromuscular Unit, Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Department of Neurology (D.R.C.), Johns Hopkins University, Baltimore, MD; Institute of Infection, Immunity and Inflammation (A.D., H.J.W.), University of Glasgow, United Kingdom; National Hospital Copenhagen (C.D.d.l.C.), Copenhagen, Denmark; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Alberta, Canada; Nuffield Department of Clinical Neurosciences (J.F., S.R.), University of Oxford, John Radcliffe Hospital, United Kingdom; Department of Neurology (T.G.-S., J.P.), Hospital Clínico de Santiago, Spain; Neurology, Neuromuscular Diseases, Electromyography (J.M.G.), Hospital for Special Surgery; Weill Medical College of Cornell University (J.M.G.), New York; Department of Neurology (K.C.G., B.S.), Tufts University School of Medicine, Boston, MA; Department of Neurology (V.G.), Montefiore Medical Center, New York; Department of Neurology (R.D.M.H.), King's College Hospital, London, United Kingdom; Department of Neurology (H.-P.H.), University of Düsseldorf, Germany; Brain and Mind Centre (H.-P.H.), University of Sydney, Australia; Department of Neurology (H.-P.H.), Medical University of Vienna, Austria; Laboratory of Gut-Brain Signaling (I.H., I.J., Z.I., Q.D.M.), Laboratory Sciences and Services Division, icddr,b, Dhaka, Bangladesh; Department of Neurology (J.V.H., S.H.S.), Odense University Hospital, Denmark; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, United Kingdom; Department of Neurology (S. Karafiath), Utah Valley University, Orem; Department of Neurology (H.D.K.), University Health Network, University of Toronto, ON, Canada; Department of Neurology (R.P.K., K.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (N.K.), University of Vermont Medical Centre, Burlington; Department of Neurology (M.K., S. Kusunoki), Kindai University, Faculty of Medicine, Osaka, Japan; Department of Neurology (L.W.G.L., L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (S. Kuwabara), Chiba University, Japan; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (L.M.-A., L.Q.), Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, Spain; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, United Kingdom; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Research Hospital, Milan University, Italy; Department of Clinical Neurophysiology (Y.P.), Reference Centre for NMD, CHU Nantes, France; Department of Neurology (R.R.), Hospital Británico, Buenos Aires, Argentina; Department of Immunology (W.V.R., A.P.T.-G., R.H., B.C.J.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Department of Neurology (S.R.), Oxford University Hospitals NHS Foundation Trust, John Radcliffe Hospital; Department of Neurology (R.C.R.), Cambridge University Hospitals NHS Foundation Trust, Addenbrooke's Hospital, Cambridge Biomedical Campus, United Kingdom; Department of Medicine (N.S., T.C.-Y.), University of Malaya, Kuala Lumpur; Department of Neurology (S.H.S.), University of Southern Denmark, Odense; Department of Clinical Neurophysiology (H.T.), Aarhus University Hospital, Denmark; and Hospital Universitario Marques de Valdecilla (M.J.S.T.), Santander, Cantabria, Spain.; Pereon Y; From the Departments of Neurology (S.E.L., S. Arends, B.v.d.B., A.Y.D., P.A.v.D., K.K., L.W.G.L., W.V.R., J.R., C.V., B.C.J.), and Viroscience (A.A.v.d.E.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Department of Neurology (H.A., T.H.), Aarhus University Hospital, Denmark; Department of Neurology (G.A.), Mental Health and Sensory Organs (NESMOS), Faculty of Medicine and Psychology, University of Rome 'Sapienza,' Sant' Andrea Hospital, Italy; Department of Neurology (S. Arends), Haga Teaching Hospital, The Hague, the Netherlands; Department of Neurology (S. Attarian), Reference Centre for NMD, CHU Timone, Marseille, France; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, FLENI, Buenos Aires, Argentina; Division of Neurology (K.J.B., E.L.P.), Department of Medicine, Groote Schuur Hospital, University of Cape Town, South Africa; Department RH-MDC-Immunology (M.R.B., M.M.), Reinier de Graaf Gasthuis, Delft, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (B.v.d.B., F.H.V.), Franciscus Gasthuis & Vlietland, Schiedam, the Netherlands; Department of Neurology (P.V.d.B.), University Hospital St. Luc, University of Louvain, Brussels, Belgium; Department of Neurology (J.B.), Saarland University Medical School, Homburg (previous hospital), and MVZ Pfalzklinikum (J.B.), Kusel, Germany (current hospital); Department of Neurology (M.B.), Leeds Teaching Hospitals, United Kingdom; Department of Neurology (C.C., V.N.-H.), Neuromuscular Unit, Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Department of Neurology (D.R.C.), Johns Hopkins University, Baltimore, MD; Institute of Infection, Immunity and Inflammation (A.D., H.J.W.), University of Glasgow, United Kingdom; National Hospital Copenhagen (C.D.d.l.C.), Copenhagen, Denmark; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Alberta, Canada; Nuffield Department of Clinical Neurosciences (J.F., S.R.), University of Oxford, John Radcliffe Hospital, United Kingdom; Department of Neurology (T.G.-S., J.P.), Hospital Clínico de Santiago, Spain; Neurology, Neuromuscular Diseases, Electromyography (J.M.G.), Hospital for Special Surgery; Weill Medical College of Cornell University (J.M.G.), New York; Department of Neurology (K.C.G., B.S.), Tufts University School of Medicine, Boston, MA; Department of Neurology (V.G.), Montefiore Medical Center, New York; Department of Neurology (R.D.M.H.), King's College Hospital, London, United Kingdom; Department of Neurology (H.-P.H.), University of Düsseldorf, Germany; Brain and Mind Centre (H.-P.H.), University of Sydney, Australia; Department of Neurology (H.-P.H.), Medical University of Vienna, Austria; Laboratory of Gut-Brain Signaling (I.H., I.J., Z.I., Q.D.M.), Laboratory Sciences and Services Division, icddr,b, Dhaka, Bangladesh; Department of Neurology (J.V.H., S.H.S.), Odense University Hospital, Denmark; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, United Kingdom; Department of Neurology (S. Karafiath), Utah Valley University, Orem; Department of Neurology (H.D.K.), University Health Network, University of Toronto, ON, Canada; Department of Neurology (R.P.K., K.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (N.K.), University of Vermont Medical Centre, Burlington; Department of Neurology (M.K., S. Kusunoki), Kindai University, Faculty of Medicine, Osaka, Japan; Department of Neurology (L.W.G.L., L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (S. Kuwabara), Chiba University, Japan; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (L.M.-A., L.Q.), Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, Spain; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, United Kingdom; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Research Hospital, Milan University, Italy; Department of Clinical Neurophysiology (Y.P.), Reference Centre for NMD, CHU Nantes, France; Department of Neurology (R.R.), Hospital Británico, Buenos Aires, Argentina; Department of Immunology (W.V.R., A.P.T.-G., R.H., B.C.J.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Department of Neurology (S.R.), Oxford University Hospitals NHS Foundation Trust, John Radcliffe Hospital; Department of Neurology (R.C.R.), Cambridge University Hospitals NHS Foundation Trust, Addenbrooke's Hospital, Cambridge Biomedical Campus, United Kingdom; Department of Medicine (N.S., T.C.-Y.), University of Malaya, Kuala Lumpur; Department of Neurology (S.H.S.), University of Southern Denmark, Odense; Department of Clinical Neurophysiology (H.T.), Aarhus University Hospital, Denmark; and Hospital Universitario Marques de Valdecilla (M.J.S.T.), Santander, Cantabria, Spain.; Querol L; From the Departments of Neurology (S.E.L., S. Arends, B.v.d.B., A.Y.D., P.A.v.D., K.K., L.W.G.L., W.V.R., J.R., C.V., B.C.J.), and Viroscience (A.A.v.d.E.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Department of Neurology (H.A., T.H.), Aarhus University Hospital, Denmark; Department of Neurology (G.A.), Mental Health and Sensory Organs (NESMOS), Faculty of Medicine and Psychology, University of Rome 'Sapienza,' Sant' Andrea Hospital, Italy; Department of Neurology (S. Arends), Haga Teaching Hospital, The Hague, the Netherlands; Department of Neurology (S. Attarian), Reference Centre for NMD, CHU Timone, Marseille, France; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, FLENI, Buenos Aires, Argentina; Division of Neurology (K.J.B., E.L.P.), Department of Medicine, Groote Schuur Hospital, University of Cape Town, South Africa; Department RH-MDC-Immunology (M.R.B., M.M.), Reinier de Graaf Gasthuis, Delft, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (B.v.d.B., F.H.V.), Franciscus Gasthuis & Vlietland, Schiedam, the Netherlands; Department of Neurology (P.V.d.B.), University Hospital St. Luc, University of Louvain, Brussels, Belgium; Department of Neurology (J.B.), Saarland University Medical School, Homburg (previous hospital), and MVZ Pfalzklinikum (J.B.), Kusel, Germany (current hospital); Department of Neurology (M.B.), Leeds Teaching Hospitals, United Kingdom; Department of Neurology (C.C., V.N.-H.), Neuromuscular Unit, Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Department of Neurology (D.R.C.), Johns Hopkins University, Baltimore, MD; Institute of Infection, Immunity and Inflammation (A.D., H.J.W.), University of Glasgow, United Kingdom; National Hospital Copenhagen (C.D.d.l.C.), Copenhagen, Denmark; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Alberta, Canada; Nuffield Department of Clinical Neurosciences (J.F., S.R.), University of Oxford, John Radcliffe Hospital, United Kingdom; Department of Neurology (T.G.-S., J.P.), Hospital Clínico de Santiago, Spain; Neurology, Neuromuscular Diseases, Electromyography (J.M.G.), Hospital for Special Surgery; Weill Medical College of Cornell University (J.M.G.), New York; Department of Neurology (K.C.G., B.S.), Tufts University School of Medicine, Boston, MA; Department of Neurology (V.G.), Montefiore Medical Center, New York; Department of Neurology (R.D.M.H.), King's College Hospital, London, United Kingdom; Department of Neurology (H.-P.H.), University of Düsseldorf, Germany; Brain and Mind Centre (H.-P.H.), University of Sydney, Australia; Department of Neurology (H.-P.H.), Medical University of Vienna, Austria; Laboratory of Gut-Brain Signaling (I.H., I.J., Z.I., Q.D.M.), Laboratory Sciences and Services Division, icddr,b, Dhaka, Bangladesh; Department of Neurology (J.V.H., S.H.S.), Odense University Hospital, Denmark; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, United Kingdom; Department of Neurology (S. Karafiath), Utah Valley University, Orem; Department of Neurology (H.D.K.), University Health Network, University of Toronto, ON, Canada; Department of Neurology (R.P.K., K.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (N.K.), University of Vermont Medical Centre, Burlington; Department of Neurology (M.K., S. Kusunoki), Kindai University, Faculty of Medicine, Osaka, Japan; Department of Neurology (L.W.G.L., L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (S. Kuwabara), Chiba University, Japan; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (L.M.-A., L.Q.), Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, Spain; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, United Kingdom; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Research Hospital, Milan University, Italy; Department of Clinical Neurophysiology (Y.P.), Reference Centre for NMD, CHU Nantes, France; Department of Neurology (R.R.), Hospital Británico, Buenos Aires, Argentina; Department of Immunology (W.V.R., A.P.T.-G., R.H., B.C.J.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Department of Neurology (S.R.), Oxford University Hospitals NHS Foundation Trust, John Radcliffe Hospital; Department of Neurology (R.C.R.), Cambridge University Hospitals NHS Foundation Trust, Addenbrooke's Hospital, Cambridge Biomedical Campus, United Kingdom; Department of Medicine (N.S., T.C.-Y.), University of Malaya, Kuala Lumpur; Department of Neurology (S.H.S.), University of Southern Denmark, Odense; Department of Clinical Neurophysiology (H.T.), Aarhus University Hospital, Denmark; and Hospital Universitario Marques de Valdecilla (M.J.S.T.), Santander, Cantabria, Spain.; Reisin R; From the Departments of Neurology (S.E.L., S. Arends, B.v.d.B., A.Y.D., P.A.v.D., K.K., L.W.G.L., W.V.R., J.R., C.V., B.C.J.), and Viroscience (A.A.v.d.E.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Department of Neurology (H.A., T.H.), Aarhus University Hospital, Denmark; Department of Neurology (G.A.), Mental Health and Sensory Organs (NESMOS), Faculty of Medicine and Psychology, University of Rome 'Sapienza,' Sant' Andrea Hospital, Italy; Department of Neurology (S. Arends), Haga Teaching Hospital, The Hague, the Netherlands; Department of Neurology (S. Attarian), Reference Centre for NMD, CHU Timone, Marseille, France; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, FLENI, Buenos Aires, Argentina; Division of Neurology (K.J.B., E.L.P.), Department of Medicine, Groote Schuur Hospital, University of Cape Town, South Africa; Department RH-MDC-Immunology (M.R.B., M.M.), Reinier de Graaf Gasthuis, Delft, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (B.v.d.B., F.H.V.), Franciscus Gasthuis & Vlietland, Schiedam, the Netherlands; Department of Neurology (P.V.d.B.), University Hospital St. Luc, University of Louvain, Brussels, Belgium; Department of Neurology (J.B.), Saarland University Medical School, Homburg (previous hospital), and MVZ Pfalzklinikum (J.B.), Kusel, Germany (current hospital); Department of Neurology (M.B.), Leeds Teaching Hospitals, United Kingdom; Department of Neurology (C.C., V.N.-H.), Neuromuscular Unit, Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Department of Neurology (D.R.C.), Johns Hopkins University, Baltimore, MD; Institute of Infection, Immunity and Inflammation (A.D., H.J.W.), University of Glasgow, United Kingdom; National Hospital Copenhagen (C.D.d.l.C.), Copenhagen, Denmark; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Alberta, Canada; Nuffield Department of Clinical Neurosciences (J.F., S.R.), University of Oxford, John Radcliffe Hospital, United Kingdom; Department of Neurology (T.G.-S., J.P.), Hospital Clínico de Santiago, Spain; Neurology, Neuromuscular Diseases, Electromyography (J.M.G.), Hospital for Special Surgery; Weill Medical College of Cornell University (J.M.G.), New York; Department of Neurology (K.C.G., B.S.), Tufts University School of Medicine, Boston, MA; Department of Neurology (V.G.), Montefiore Medical Center, New York; Department of Neurology (R.D.M.H.), King's College Hospital, London, United Kingdom; Department of Neurology (H.-P.H.), University of Düsseldorf, Germany; Brain and Mind Centre (H.-P.H.), University of Sydney, Australia; Department of Neurology (H.-P.H.), Medical University of Vienna, Austria; Laboratory of Gut-Brain Signaling (I.H., I.J., Z.I., Q.D.M.), Laboratory Sciences and Services Division, icddr,b, Dhaka, Bangladesh; Department of Neurology (J.V.H., S.H.S.), Odense University Hospital, Denmark; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, United Kingdom; Department of Neurology (S. Karafiath), Utah Valley University, Orem; Department of Neurology (H.D.K.), University Health Network, University of Toronto, ON, Canada; Department of Neurology (R.P.K., K.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (N.K.), University of Vermont Medical Centre, Burlington; Department of Neurology (M.K., S. Kusunoki), Kindai University, Faculty of Medicine, Osaka, Japan; Department of Neurology (L.W.G.L., L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (S. Kuwabara), Chiba University, Japan; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (L.M.-A., L.Q.), Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, Spain; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, United Kingdom; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Research Hospital, Milan University, Italy; Department of Clinical Neurophysiology (Y.P.), Reference Centre for NMD, CHU Nantes, France; Department of Neurology (R.R.), Hospital Británico, Buenos Aires, Argentina; Department of Immunology (W.V.R., A.P.T.-G., R.H., B.C.J.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Department of Neurology (S.R.), Oxford University Hospitals NHS Foundation Trust, John Radcliffe Hospital; Department of Neurology (R.C.R.), Cambridge University Hospitals NHS Foundation Trust, Addenbrooke's Hospital, Cambridge Biomedical Campus, United Kingdom; Department of Medicine (N.S., T.C.-Y.), University of Malaya, Kuala Lumpur; Department of Neurology (S.H.S.), University of Southern Denmark, Odense; Department of Clinical Neurophysiology (H.T.), Aarhus University Hospital, Denmark; and Hospital Universitario Marques de Valdecilla (M.J.S.T.), Santander, Cantabria, Spain.; Van Rijs W; From the Departments of Neurology (S.E.L., S. Arends, B.v.d.B., A.Y.D., P.A.v.D., K.K., L.W.G.L., W.V.R., J.R., C.V., B.C.J.), and Viroscience (A.A.v.d.E.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Department of Neurology (H.A., T.H.), Aarhus University Hospital, Denmark; Department of Neurology (G.A.), Mental Health and Sensory Organs (NESMOS), Faculty of Medicine and Psychology, University of Rome 'Sapienza,' Sant' Andrea Hospital, Italy; Department of Neurology (S. Arends), Haga Teaching Hospital, The Hague, the Netherlands; Department of Neurology (S. Attarian), Reference Centre for NMD, CHU Timone, Marseille, France; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, FLENI, Buenos Aires, Argentina; Division of Neurology (K.J.B., E.L.P.), Department of Medicine, Groote Schuur Hospital, University of Cape Town, South Africa; Department RH-MDC-Immunology (M.R.B., M.M.), Reinier de Graaf Gasthuis, Delft, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (B.v.d.B., F.H.V.), Franciscus Gasthuis & Vlietland, Schiedam, the Netherlands; Department of Neurology (P.V.d.B.), University Hospital St. Luc, University of Louvain, Brussels, Belgium; Department of Neurology (J.B.), Saarland University Medical School, Homburg (previous hospital), and MVZ Pfalzklinikum (J.B.), Kusel, Germany (current hospital); Department of Neurology (M.B.), Leeds Teaching Hospitals, United Kingdom; Department of Neurology (C.C., V.N.-H.), Neuromuscular Unit, Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Department of Neurology (D.R.C.), Johns Hopkins University, Baltimore, MD; Institute of Infection, Immunity and Inflammation (A.D., H.J.W.), University of Glasgow, United Kingdom; National Hospital Copenhagen (C.D.d.l.C.), Copenhagen, Denmark; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Alberta, Canada; Nuffield Department of Clinical Neurosciences (J.F., S.R.), University of Oxford, John Radcliffe Hospital, United Kingdom; Department of Neurology (T.G.-S., J.P.), Hospital Clínico de Santiago, Spain; Neurology, Neuromuscular Diseases, Electromyography (J.M.G.), Hospital for Special Surgery; Weill Medical College of Cornell University (J.M.G.), New York; Department of Neurology (K.C.G., B.S.), Tufts University School of Medicine, Boston, MA; Department of Neurology (V.G.), Montefiore Medical Center, New York; Department of Neurology (R.D.M.H.), King's College Hospital, London, United Kingdom; Department of Neurology (H.-P.H.), University of Düsseldorf, Germany; Brain and Mind Centre (H.-P.H.), University of Sydney, Australia; Department of Neurology (H.-P.H.), Medical University of Vienna, Austria; Laboratory of Gut-Brain Signaling (I.H., I.J., Z.I., Q.D.M.), Laboratory Sciences and Services Division, icddr,b, Dhaka, Bangladesh; Department of Neurology (J.V.H., S.H.S.), Odense University Hospital, Denmark; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, United Kingdom; Department of Neurology (S. Karafiath), Utah Valley University, Orem; Department of Neurology (H.D.K.), University Health Network, University of Toronto, ON, Canada; Department of Neurology (R.P.K., K.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (N.K.), University of Vermont Medical Centre, Burlington; Department of Neurology (M.K., S. Kusunoki), Kindai University, Faculty of Medicine, Osaka, Japan; Department of Neurology (L.W.G.L., L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (S. Kuwabara), Chiba University, Japan; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (L.M.-A., L.Q.), Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, Spain; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, United Kingdom; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Research Hospital, Milan University, Italy; Department of Clinical Neurophysiology (Y.P.), Reference Centre for NMD, CHU Nantes, France; Department of Neurology (R.R.), Hospital Británico, Buenos Aires, Argentina; Department of Immunology (W.V.R., A.P.T.-G., R.H., B.C.J.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Department of Neurology (S.R.), Oxford University Hospitals NHS Foundation Trust, John Radcliffe Hospital; Department of Neurology (R.C.R.), Cambridge University Hospitals NHS Foundation Trust, Addenbrooke's Hospital, Cambridge Biomedical Campus, United Kingdom; Department of Medicine (N.S., T.C.-Y.), University of Malaya, Kuala Lumpur; Department of Neurology (S.H.S.), University of Southern Denmark, Odense; Department of Clinical Neurophysiology (H.T.), Aarhus University Hospital, Denmark; and Hospital Universitario Marques de Valdecilla (M.J.S.T.), Santander, Cantabria, Spain.; Rinaldi S; From the Departments of Neurology (S.E.L., S. Arends, B.v.d.B., A.Y.D., P.A.v.D., K.K., L.W.G.L., W.V.R., J.R., C.V., B.C.J.), and Viroscience (A.A.v.d.E.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Department of Neurology (H.A., T.H.), Aarhus University Hospital, Denmark; Department of Neurology (G.A.), Mental Health and Sensory Organs (NESMOS), Faculty of Medicine and Psychology, University of Rome 'Sapienza,' Sant' Andrea Hospital, Italy; Department of Neurology (S. Arends), Haga Teaching Hospital, The Hague, the Netherlands; Department of Neurology (S. Attarian), Reference Centre for NMD, CHU Timone, Marseille, France; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, FLENI, Buenos Aires, Argentina; Division of Neurology (K.J.B., E.L.P.), Department of Medicine, Groote Schuur Hospital, University of Cape Town, South Africa; Department RH-MDC-Immunology (M.R.B., M.M.), Reinier de Graaf Gasthuis, Delft, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (B.v.d.B., F.H.V.), Franciscus Gasthuis & Vlietland, Schiedam, the Netherlands; Department of Neurology (P.V.d.B.), University Hospital St. Luc, University of Louvain, Brussels, Belgium; Department of Neurology (J.B.), Saarland University Medical School, Homburg (previous hospital), and MVZ Pfalzklinikum (J.B.), Kusel, Germany (current hospital); Department of Neurology (M.B.), Leeds Teaching Hospitals, United Kingdom; Department of Neurology (C.C., V.N.-H.), Neuromuscular Unit, Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Department of Neurology (D.R.C.), Johns Hopkins University, Baltimore, MD; Institute of Infection, Immunity and Inflammation (A.D., H.J.W.), University of Glasgow, United Kingdom; National Hospital Copenhagen (C.D.d.l.C.), Copenhagen, Denmark; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Alberta, Canada; Nuffield Department of Clinical Neurosciences (J.F., S.R.), University of Oxford, John Radcliffe Hospital, United Kingdom; Department of Neurology (T.G.-S., J.P.), Hospital Clínico de Santiago, Spain; Neurology, Neuromuscular Diseases, Electromyography (J.M.G.), Hospital for Special Surgery; Weill Medical College of Cornell University (J.M.G.), New York; Department of Neurology (K.C.G., B.S.), Tufts University School of Medicine, Boston, MA; Department of Neurology (V.G.), Montefiore Medical Center, New York; Department of Neurology (R.D.M.H.), King's College Hospital, London, United Kingdom; Department of Neurology (H.-P.H.), University of Düsseldorf, Germany; Brain and Mind Centre (H.-P.H.), University of Sydney, Australia; Department of Neurology (H.-P.H.), Medical University of Vienna, Austria; Laboratory of Gut-Brain Signaling (I.H., I.J., Z.I., Q.D.M.), Laboratory Sciences and Services Division, icddr,b, Dhaka, Bangladesh; Department of Neurology (J.V.H., S.H.S.), Odense University Hospital, Denmark; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, United Kingdom; Department of Neurology (S. Karafiath), Utah Valley University, Orem; Department of Neurology (H.D.K.), University Health Network, University of Toronto, ON, Canada; Department of Neurology (R.P.K., K.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (N.K.), University of Vermont Medical Centre, Burlington; Department of Neurology (M.K., S. Kusunoki), Kindai University, Faculty of Medicine, Osaka, Japan; Department of Neurology (L.W.G.L., L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (S. Kuwabara), Chiba University, Japan; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (L.M.-A., L.Q.), Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, Spain; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, United Kingdom; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Research Hospital, Milan University, Italy; Department of Clinical Neurophysiology (Y.P.), Reference Centre for NMD, CHU Nantes, France; Department of Neurology (R.R.), Hospital Británico, Buenos Aires, Argentina; Department of Immunology (W.V.R., A.P.T.-G., R.H., B.C.J.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Department of Neurology (S.R.), Oxford University Hospitals NHS Foundation Trust, John Radcliffe Hospital; Department of Neurology (R.C.R.), Cambridge University Hospitals NHS Foundation Trust, Addenbrooke's Hospital, Cambridge Biomedical Campus, United Kingdom; Department of Medicine (N.S., T.C.-Y.), University of Malaya, Kuala Lumpur; Department of Neurology (S.H.S.), University of Southern Denmark, Odense; Department of Clinical Neurophysiology (H.T.), Aarhus University Hospital, Denmark; and Hospital Universitario Marques de Valdecilla (M.J.S.T.), Santander, Cantabria, Spain.; Roberts RC; From the Departments of Neurology (S.E.L., S. Arends, B.v.d.B., A.Y.D., P.A.v.D., K.K., L.W.G.L., W.V.R., J.R., C.V., B.C.J.), and Viroscience (A.A.v.d.E.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Department of Neurology (H.A., T.H.), Aarhus University Hospital, Denmark; Department of Neurology (G.A.), Mental Health and Sensory Organs (NESMOS), Faculty of Medicine and Psychology, University of Rome 'Sapienza,' Sant' Andrea Hospital, Italy; Department of Neurology (S. Arends), Haga Teaching Hospital, The Hague, the Netherlands; Department of Neurology (S. Attarian), Reference Centre for NMD, CHU Timone, Marseille, France; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, FLENI, Buenos Aires, Argentina; Division of Neurology (K.J.B., E.L.P.), Department of Medicine, Groote Schuur Hospital, University of Cape Town, South Africa; Department RH-MDC-Immunology (M.R.B., M.M.), Reinier de Graaf Gasthuis, Delft, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (B.v.d.B., F.H.V.), Franciscus Gasthuis & Vlietland, Schiedam, the Netherlands; Department of Neurology (P.V.d.B.), University Hospital St. Luc, University of Louvain, Brussels, Belgium; Department of Neurology (J.B.), Saarland University Medical School, Homburg (previous hospital), and MVZ Pfalzklinikum (J.B.), Kusel, Germany (current hospital); Department of Neurology (M.B.), Leeds Teaching Hospitals, United Kingdom; Department of Neurology (C.C., V.N.-H.), Neuromuscular Unit, Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Department of Neurology (D.R.C.), Johns Hopkins University, Baltimore, MD; Institute of Infection, Immunity and Inflammation (A.D., H.J.W.), University of Glasgow, United Kingdom; National Hospital Copenhagen (C.D.d.l.C.), Copenhagen, Denmark; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Alberta, Canada; Nuffield Department of Clinical Neurosciences (J.F., S.R.), University of Oxford, John Radcliffe Hospital, United Kingdom; Department of Neurology (T.G.-S., J.P.), Hospital Clínico de Santiago, Spain; Neurology, Neuromuscular Diseases, Electromyography (J.M.G.), Hospital for Special Surgery; Weill Medical College of Cornell University (J.M.G.), New York; Department of Neurology (K.C.G., B.S.), Tufts University School of Medicine, Boston, MA; Department of Neurology (V.G.), Montefiore Medical Center, New York; Department of Neurology (R.D.M.H.), King's College Hospital, London, United Kingdom; Department of Neurology (H.-P.H.), University of Düsseldorf, Germany; Brain and Mind Centre (H.-P.H.), University of Sydney, Australia; Department of Neurology (H.-P.H.), Medical University of Vienna, Austria; Laboratory of Gut-Brain Signaling (I.H., I.J., Z.I., Q.D.M.), Laboratory Sciences and Services Division, icddr,b, Dhaka, Bangladesh; Department of Neurology (J.V.H., S.H.S.), Odense University Hospital, Denmark; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, United Kingdom; Department of Neurology (S. Karafiath), Utah Valley University, Orem; Department of Neurology (H.D.K.), University Health Network, University of Toronto, ON, Canada; Department of Neurology (R.P.K., K.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (N.K.), University of Vermont Medical Centre, Burlington; Department of Neurology (M.K., S. Kusunoki), Kindai University, Faculty of Medicine, Osaka, Japan; Department of Neurology (L.W.G.L., L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (S. Kuwabara), Chiba University, Japan; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (L.M.-A., L.Q.), Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, Spain; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, United Kingdom; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Research Hospital, Milan University, Italy; Department of Clinical Neurophysiology (Y.P.), Reference Centre for NMD, CHU Nantes, France; Department of Neurology (R.R.), Hospital Británico, Buenos Aires, Argentina; Department of Immunology (W.V.R., A.P.T.-G., R.H., B.C.J.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Department of Neurology (S.R.), Oxford University Hospitals NHS Foundation Trust, John Radcliffe Hospital; Department of Neurology (R.C.R.), Cambridge University Hospitals NHS Foundation Trust, Addenbrooke's Hospital, Cambridge Biomedical Campus, United Kingdom; Department of Medicine (N.S., T.C.-Y.), University of Malaya, Kuala Lumpur; Department of Neurology (S.H.S.), University of Southern Denmark, Odense; Department of Clinical Neurophysiology (H.T.), Aarhus University Hospital, Denmark; and Hospital Universitario Marques de Valdecilla (M.J.S.T.), Santander, Cantabria, Spain.; Roodbol J; From the Departments of Neurology (S.E.L., S. Arends, B.v.d.B., A.Y.D., P.A.v.D., K.K., L.W.G.L., W.V.R., J.R., C.V., B.C.J.), and Viroscience (A.A.v.d.E.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Department of Neurology (H.A., T.H.), Aarhus University Hospital, Denmark; Department of Neurology (G.A.), Mental Health and Sensory Organs (NESMOS), Faculty of Medicine and Psychology, University of Rome 'Sapienza,' Sant' Andrea Hospital, Italy; Department of Neurology (S. Arends), Haga Teaching Hospital, The Hague, the Netherlands; Department of Neurology (S. Attarian), Reference Centre for NMD, CHU Timone, Marseille, France; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, FLENI, Buenos Aires, Argentina; Division of Neurology (K.J.B., E.L.P.), Department of Medicine, Groote Schuur Hospital, University of Cape Town, South Africa; Department RH-MDC-Immunology (M.R.B., M.M.), Reinier de Graaf Gasthuis, Delft, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (B.v.d.B., F.H.V.), Franciscus Gasthuis & Vlietland, Schiedam, the Netherlands; Department of Neurology (P.V.d.B.), University Hospital St. Luc, University of Louvain, Brussels, Belgium; Department of Neurology (J.B.), Saarland University Medical School, Homburg (previous hospital), and MVZ Pfalzklinikum (J.B.), Kusel, Germany (current hospital); Department of Neurology (M.B.), Leeds Teaching Hospitals, United Kingdom; Department of Neurology (C.C., V.N.-H.), Neuromuscular Unit, Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Department of Neurology (D.R.C.), Johns Hopkins University, Baltimore, MD; Institute of Infection, Immunity and Inflammation (A.D., H.J.W.), University of Glasgow, United Kingdom; National Hospital Copenhagen (C.D.d.l.C.), Copenhagen, Denmark; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Alberta, Canada; Nuffield Department of Clinical Neurosciences (J.F., S.R.), University of Oxford, John Radcliffe Hospital, United Kingdom; Department of Neurology (T.G.-S., J.P.), Hospital Clínico de Santiago, Spain; Neurology, Neuromuscular Diseases, Electromyography (J.M.G.), Hospital for Special Surgery; Weill Medical College of Cornell University (J.M.G.), New York; Department of Neurology (K.C.G., B.S.), Tufts University School of Medicine, Boston, MA; Department of Neurology (V.G.), Montefiore Medical Center, New York; Department of Neurology (R.D.M.H.), King's College Hospital, London, United Kingdom; Department of Neurology (H.-P.H.), University of Düsseldorf, Germany; Brain and Mind Centre (H.-P.H.), University of Sydney, Australia; Department of Neurology (H.-P.H.), Medical University of Vienna, Austria; Laboratory of Gut-Brain Signaling (I.H., I.J., Z.I., Q.D.M.), Laboratory Sciences and Services Division, icddr,b, Dhaka, Bangladesh; Department of Neurology (J.V.H., S.H.S.), Odense University Hospital, Denmark; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, United Kingdom; Department of Neurology (S. Karafiath), Utah Valley University, Orem; Department of Neurology (H.D.K.), University Health Network, University of Toronto, ON, Canada; Department of Neurology (R.P.K., K.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (N.K.), University of Vermont Medical Centre, Burlington; Department of Neurology (M.K., S. Kusunoki), Kindai University, Faculty of Medicine, Osaka, Japan; Department of Neurology (L.W.G.L., L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (S. Kuwabara), Chiba University, Japan; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (L.M.-A., L.Q.), Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, Spain; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, United Kingdom; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Research Hospital, Milan University, Italy; Department of Clinical Neurophysiology (Y.P.), Reference Centre for NMD, CHU Nantes, France; Department of Neurology (R.R.), Hospital Británico, Buenos Aires, Argentina; Department of Immunology (W.V.R., A.P.T.-G., R.H., B.C.J.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Department of Neurology (S.R.), Oxford University Hospitals NHS Foundation Trust, John Radcliffe Hospital; Department of Neurology (R.C.R.), Cambridge University Hospitals NHS Foundation Trust, Addenbrooke's Hospital, Cambridge Biomedical Campus, United Kingdom; Department of Medicine (N.S., T.C.-Y.), University of Malaya, Kuala Lumpur; Department of Neurology (S.H.S.), University of Southern Denmark, Odense; Department of Clinical Neurophysiology (H.T.), Aarhus University Hospital, Denmark; and Hospital Universitario Marques de Valdecilla (M.J.S.T.), Santander, Cantabria, Spain.; Shahrizaila N; From the Departments of Neurology (S.E.L., S. Arends, B.v.d.B., A.Y.D., P.A.v.D., K.K., L.W.G.L., W.V.R., J.R., C.V., B.C.J.), and Viroscience (A.A.v.d.E.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Department of Neurology (H.A., T.H.), Aarhus University Hospital, Denmark; Department of Neurology (G.A.), Mental Health and Sensory Organs (NESMOS), Faculty of Medicine and Psychology, University of Rome 'Sapienza,' Sant' Andrea Hospital, Italy; Department of Neurology (S. Arends), Haga Teaching Hospital, The Hague, the Netherlands; Department of Neurology (S. Attarian), Reference Centre for NMD, CHU Timone, Marseille, France; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, FLENI, Buenos Aires, Argentina; Division of Neurology (K.J.B., E.L.P.), Department of Medicine, Groote Schuur Hospital, University of Cape Town, South Africa; Department RH-MDC-Immunology (M.R.B., M.M.), Reinier de Graaf Gasthuis, Delft, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (B.v.d.B., F.H.V.), Franciscus Gasthuis & Vlietland, Schiedam, the Netherlands; Department of Neurology (P.V.d.B.), University Hospital St. Luc, University of Louvain, Brussels, Belgium; Department of Neurology (J.B.), Saarland University Medical School, Homburg (previous hospital), and MVZ Pfalzklinikum (J.B.), Kusel, Germany (current hospital); Department of Neurology (M.B.), Leeds Teaching Hospitals, United Kingdom; Department of Neurology (C.C., V.N.-H.), Neuromuscular Unit, Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Department of Neurology (D.R.C.), Johns Hopkins University, Baltimore, MD; Institute of Infection, Immunity and Inflammation (A.D., H.J.W.), University of Glasgow, United Kingdom; National Hospital Copenhagen (C.D.d.l.C.), Copenhagen, Denmark; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Alberta, Canada; Nuffield Department of Clinical Neurosciences (J.F., S.R.), University of Oxford, John Radcliffe Hospital, United Kingdom; Department of Neurology (T.G.-S., J.P.), Hospital Clínico de Santiago, Spain; Neurology, Neuromuscular Diseases, Electromyography (J.M.G.), Hospital for Special Surgery; Weill Medical College of Cornell University (J.M.G.), New York; Department of Neurology (K.C.G., B.S.), Tufts University School of Medicine, Boston, MA; Department of Neurology (V.G.), Montefiore Medical Center, New York; Department of Neurology (R.D.M.H.), King's College Hospital, London, United Kingdom; Department of Neurology (H.-P.H.), University of Düsseldorf, Germany; Brain and Mind Centre (H.-P.H.), University of Sydney, Australia; Department of Neurology (H.-P.H.), Medical University of Vienna, Austria; Laboratory of Gut-Brain Signaling (I.H., I.J., Z.I., Q.D.M.), Laboratory Sciences and Services Division, icddr,b, Dhaka, Bangladesh; Department of Neurology (J.V.H., S.H.S.), Odense University Hospital, Denmark; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, United Kingdom; Department of Neurology (S. Karafiath), Utah Valley University, Orem; Department of Neurology (H.D.K.), University Health Network, University of Toronto, ON, Canada; Department of Neurology (R.P.K., K.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (N.K.), University of Vermont Medical Centre, Burlington; Department of Neurology (M.K., S. Kusunoki), Kindai University, Faculty of Medicine, Osaka, Japan; Department of Neurology (L.W.G.L., L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (S. Kuwabara), Chiba University, Japan; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (L.M.-A., L.Q.), Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, Spain; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, United Kingdom; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Research Hospital, Milan University, Italy; Department of Clinical Neurophysiology (Y.P.), Reference Centre for NMD, CHU Nantes, France; Department of Neurology (R.R.), Hospital Británico, Buenos Aires, Argentina; Department of Immunology (W.V.R., A.P.T.-G., R.H., B.C.J.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Department of Neurology (S.R.), Oxford University Hospitals NHS Foundation Trust, John Radcliffe Hospital; Department of Neurology (R.C.R.), Cambridge University Hospitals NHS Foundation Trust, Addenbrooke's Hospital, Cambridge Biomedical Campus, United Kingdom; Department of Medicine (N.S., T.C.-Y.), University of Malaya, Kuala Lumpur; Department of Neurology (S.H.S.), University of Southern Denmark, Odense; Department of Clinical Neurophysiology (H.T.), Aarhus University Hospital, Denmark; and Hospital Universitario Marques de Valdecilla (M.J.S.T.), Santander, Cantabria, Spain.; Sindrup SH; From the Departments of Neurology (S.E.L., S. Arends, B.v.d.B., A.Y.D., P.A.v.D., K.K., L.W.G.L., W.V.R., J.R., C.V., B.C.J.), and Viroscience (A.A.v.d.E.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Department of Neurology (H.A., T.H.), Aarhus University Hospital, Denmark; Department of Neurology (G.A.), Mental Health and Sensory Organs (NESMOS), Faculty of Medicine and Psychology, University of Rome 'Sapienza,' Sant' Andrea Hospital, Italy; Department of Neurology (S. Arends), Haga Teaching Hospital, The Hague, the Netherlands; Department of Neurology (S. Attarian), Reference Centre for NMD, CHU Timone, Marseille, France; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, FLENI, Buenos Aires, Argentina; Division of Neurology (K.J.B., E.L.P.), Department of Medicine, Groote Schuur Hospital, University of Cape Town, South Africa; Department RH-MDC-Immunology (M.R.B., M.M.), Reinier de Graaf Gasthuis, Delft, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (B.v.d.B., F.H.V.), Franciscus Gasthuis & Vlietland, Schiedam, the Netherlands; Department of Neurology (P.V.d.B.), University Hospital St. Luc, University of Louvain, Brussels, Belgium; Department of Neurology (J.B.), Saarland University Medical School, Homburg (previous hospital), and MVZ Pfalzklinikum (J.B.), Kusel, Germany (current hospital); Department of Neurology (M.B.), Leeds Teaching Hospitals, United Kingdom; Department of Neurology (C.C., V.N.-H.), Neuromuscular Unit, Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Department of Neurology (D.R.C.), Johns Hopkins University, Baltimore, MD; Institute of Infection, Immunity and Inflammation (A.D., H.J.W.), University of Glasgow, United Kingdom; National Hospital Copenhagen (C.D.d.l.C.), Copenhagen, Denmark; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Alberta, Canada; Nuffield Department of Clinical Neurosciences (J.F., S.R.), University of Oxford, John Radcliffe Hospital, United Kingdom; Department of Neurology (T.G.-S., J.P.), Hospital Clínico de Santiago, Spain; Neurology, Neuromuscular Diseases, Electromyography (J.M.G.), Hospital for Special Surgery; Weill Medical College of Cornell University (J.M.G.), New York; Department of Neurology (K.C.G., B.S.), Tufts University School of Medicine, Boston, MA; Department of Neurology (V.G.), Montefiore Medical Center, New York; Department of Neurology (R.D.M.H.), King's College Hospital, London, United Kingdom; Department of Neurology (H.-P.H.), University of Düsseldorf, Germany; Brain and Mind Centre (H.-P.H.), University of Sydney, Australia; Department of Neurology (H.-P.H.), Medical University of Vienna, Austria; Laboratory of Gut-Brain Signaling (I.H., I.J., Z.I., Q.D.M.), Laboratory Sciences and Services Division, icddr,b, Dhaka, Bangladesh; Department of Neurology (J.V.H., S.H.S.), Odense University Hospital, Denmark; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, United Kingdom; Department of Neurology (S. Karafiath), Utah Valley University, Orem; Department of Neurology (H.D.K.), University Health Network, University of Toronto, ON, Canada; Department of Neurology (R.P.K., K.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (N.K.), University of Vermont Medical Centre, Burlington; Department of Neurology (M.K., S. Kusunoki), Kindai University, Faculty of Medicine, Osaka, Japan; Department of Neurology (L.W.G.L., L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (S. Kuwabara), Chiba University, Japan; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (L.M.-A., L.Q.), Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, Spain; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, United Kingdom; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Research Hospital, Milan University, Italy; Department of Clinical Neurophysiology (Y.P.), Reference Centre for NMD, CHU Nantes, France; Department of Neurology (R.R.), Hospital Británico, Buenos Aires, Argentina; Department of Immunology (W.V.R., A.P.T.-G., R.H., B.C.J.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Department of Neurology (S.R.), Oxford University Hospitals NHS Foundation Trust, John Radcliffe Hospital; Department of Neurology (R.C.R.), Cambridge University Hospitals NHS Foundation Trust, Addenbrooke's Hospital, Cambridge Biomedical Campus, United Kingdom; Department of Medicine (N.S., T.C.-Y.), University of Malaya, Kuala Lumpur; Department of Neurology (S.H.S.), University of Southern Denmark, Odense; Department of Clinical Neurophysiology (H.T.), Aarhus University Hospital, Denmark; and Hospital Universitario Marques de Valdecilla (M.J.S.T.), Santander, Cantabria, Spain.; Stein B; From the Departments of Neurology (S.E.L., S. Arends, B.v.d.B., A.Y.D., P.A.v.D., K.K., L.W.G.L., W.V.R., J.R., C.V., B.C.J.), and Viroscience (A.A.v.d.E.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Department of Neurology (H.A., T.H.), Aarhus University Hospital, Denmark; Department of Neurology (G.A.), Mental Health and Sensory Organs (NESMOS), Faculty of Medicine and Psychology, University of Rome 'Sapienza,' Sant' Andrea Hospital, Italy; Department of Neurology (S. Arends), Haga Teaching Hospital, The Hague, the Netherlands; Department of Neurology (S. Attarian), Reference Centre for NMD, CHU Timone, Marseille, France; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, FLENI, Buenos Aires, Argentina; Division of Neurology (K.J.B., E.L.P.), Department of Medicine, Groote Schuur Hospital, University of Cape Town, South Africa; Department RH-MDC-Immunology (M.R.B., M.M.), Reinier de Graaf Gasthuis, Delft, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (B.v.d.B., F.H.V.), Franciscus Gasthuis & Vlietland, Schiedam, the Netherlands; Department of Neurology (P.V.d.B.), University Hospital St. Luc, University of Louvain, Brussels, Belgium; Department of Neurology (J.B.), Saarland University Medical School, Homburg (previous hospital), and MVZ Pfalzklinikum (J.B.), Kusel, Germany (current hospital); Department of Neurology (M.B.), Leeds Teaching Hospitals, United Kingdom; Department of Neurology (C.C., V.N.-H.), Neuromuscular Unit, Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Department of Neurology (D.R.C.), Johns Hopkins University, Baltimore, MD; Institute of Infection, Immunity and Inflammation (A.D., H.J.W.), University of Glasgow, United Kingdom; National Hospital Copenhagen (C.D.d.l.C.), Copenhagen, Denmark; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Alberta, Canada; Nuffield Department of Clinical Neurosciences (J.F., S.R.), University of Oxford, John Radcliffe Hospital, United Kingdom; Department of Neurology (T.G.-S., J.P.), Hospital Clínico de Santiago, Spain; Neurology, Neuromuscular Diseases, Electromyography (J.M.G.), Hospital for Special Surgery; Weill Medical College of Cornell University (J.M.G.), New York; Department of Neurology (K.C.G., B.S.), Tufts University School of Medicine, Boston, MA; Department of Neurology (V.G.), Montefiore Medical Center, New York; Department of Neurology (R.D.M.H.), King's College Hospital, London, United Kingdom; Department of Neurology (H.-P.H.), University of Düsseldorf, Germany; Brain and Mind Centre (H.-P.H.), University of Sydney, Australia; Department of Neurology (H.-P.H.), Medical University of Vienna, Austria; Laboratory of Gut-Brain Signaling (I.H., I.J., Z.I., Q.D.M.), Laboratory Sciences and Services Division, icddr,b, Dhaka, Bangladesh; Department of Neurology (J.V.H., S.H.S.), Odense University Hospital, Denmark; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, United Kingdom; Department of Neurology (S. Karafiath), Utah Valley University, Orem; Department of Neurology (H.D.K.), University Health Network, University of Toronto, ON, Canada; Department of Neurology (R.P.K., K.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (N.K.), University of Vermont Medical Centre, Burlington; Department of Neurology (M.K., S. Kusunoki), Kindai University, Faculty of Medicine, Osaka, Japan; Department of Neurology (L.W.G.L., L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (S. Kuwabara), Chiba University, Japan; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (L.M.-A., L.Q.), Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, Spain; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, United Kingdom; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Research Hospital, Milan University, Italy; Department of Clinical Neurophysiology (Y.P.), Reference Centre for NMD, CHU Nantes, France; Department of Neurology (R.R.), Hospital Británico, Buenos Aires, Argentina; Department of Immunology (W.V.R., A.P.T.-G., R.H., B.C.J.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Department of Neurology (S.R.), Oxford University Hospitals NHS Foundation Trust, John Radcliffe Hospital; Department of Neurology (R.C.R.), Cambridge University Hospitals NHS Foundation Trust, Addenbrooke's Hospital, Cambridge Biomedical Campus, United Kingdom; Department of Medicine (N.S., T.C.-Y.), University of Malaya, Kuala Lumpur; Department of Neurology (S.H.S.), University of Southern Denmark, Odense; Department of Clinical Neurophysiology (H.T.), Aarhus University Hospital, Denmark; and Hospital Universitario Marques de Valdecilla (M.J.S.T.), Santander, Cantabria, Spain.; Cheng-Yin T; From the Departments of Neurology (S.E.L., S. Arends, B.v.d.B., A.Y.D., P.A.v.D., K.K., L.W.G.L., W.V.R., J.R., C.V., B.C.J.), and Viroscience (A.A.v.d.E.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Department of Neurology (H.A., T.H.), Aarhus University Hospital, Denmark; Department of Neurology (G.A.), Mental Health and Sensory Organs (NESMOS), Faculty of Medicine and Psychology, University of Rome 'Sapienza,' Sant' Andrea Hospital, Italy; Department of Neurology (S. Arends), Haga Teaching Hospital, The Hague, the Netherlands; Department of Neurology (S. Attarian), Reference Centre for NMD, CHU Timone, Marseille, France; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, FLENI, Buenos Aires, Argentina; Division of Neurology (K.J.B., E.L.P.), Department of Medicine, Groote Schuur Hospital, University of Cape Town, South Africa; Department RH-MDC-Immunology (M.R.B., M.M.), Reinier de Graaf Gasthuis, Delft, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (B.v.d.B., F.H.V.), Franciscus Gasthuis & Vlietland, Schiedam, the Netherlands; Department of Neurology (P.V.d.B.), University Hospital St. Luc, University of Louvain, Brussels, Belgium; Department of Neurology (J.B.), Saarland University Medical School, Homburg (previous hospital), and MVZ Pfalzklinikum (J.B.), Kusel, Germany (current hospital); Department of Neurology (M.B.), Leeds Teaching Hospitals, United Kingdom; Department of Neurology (C.C., V.N.-H.), Neuromuscular Unit, Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Department of Neurology (D.R.C.), Johns Hopkins University, Baltimore, MD; Institute of Infection, Immunity and Inflammation (A.D., H.J.W.), University of Glasgow, United Kingdom; National Hospital Copenhagen (C.D.d.l.C.), Copenhagen, Denmark; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Alberta, Canada; Nuffield Department of Clinical Neurosciences (J.F., S.R.), University of Oxford, John Radcliffe Hospital, United Kingdom; Department of Neurology (T.G.-S., J.P.), Hospital Clínico de Santiago, Spain; Neurology, Neuromuscular Diseases, Electromyography (J.M.G.), Hospital for Special Surgery; Weill Medical College of Cornell University (J.M.G.), New York; Department of Neurology (K.C.G., B.S.), Tufts University School of Medicine, Boston, MA; Department of Neurology (V.G.), Montefiore Medical Center, New York; Department of Neurology (R.D.M.H.), King's College Hospital, London, United Kingdom; Department of Neurology (H.-P.H.), University of Düsseldorf, Germany; Brain and Mind Centre (H.-P.H.), University of Sydney, Australia; Department of Neurology (H.-P.H.), Medical University of Vienna, Austria; Laboratory of Gut-Brain Signaling (I.H., I.J., Z.I., Q.D.M.), Laboratory Sciences and Services Division, icddr,b, Dhaka, Bangladesh; Department of Neurology (J.V.H., S.H.S.), Odense University Hospital, Denmark; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, United Kingdom; Department of Neurology (S. Karafiath), Utah Valley University, Orem; Department of Neurology (H.D.K.), University Health Network, University of Toronto, ON, Canada; Department of Neurology (R.P.K., K.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (N.K.), University of Vermont Medical Centre, Burlington; Department of Neurology (M.K., S. Kusunoki), Kindai University, Faculty of Medicine, Osaka, Japan; Department of Neurology (L.W.G.L., L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (S. Kuwabara), Chiba University, Japan; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (L.M.-A., L.Q.), Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, Spain; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, United Kingdom; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Research Hospital, Milan University, Italy; Department of Clinical Neurophysiology (Y.P.), Reference Centre for NMD, CHU Nantes, France; Department of Neurology (R.R.), Hospital Británico, Buenos Aires, Argentina; Department of Immunology (W.V.R., A.P.T.-G., R.H., B.C.J.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Department of Neurology (S.R.), Oxford University Hospitals NHS Foundation Trust, John Radcliffe Hospital; Department of Neurology (R.C.R.), Cambridge University Hospitals NHS Foundation Trust, Addenbrooke's Hospital, Cambridge Biomedical Campus, United Kingdom; Department of Medicine (N.S., T.C.-Y.), University of Malaya, Kuala Lumpur; Department of Neurology (S.H.S.), University of Southern Denmark, Odense; Department of Clinical Neurophysiology (H.T.), Aarhus University Hospital, Denmark; and Hospital Universitario Marques de Valdecilla (M.J.S.T.), Santander, Cantabria, Spain.; Tankisi H; From the Departments of Neurology (S.E.L., S. Arends, B.v.d.B., A.Y.D., P.A.v.D., K.K., L.W.G.L., W.V.R., J.R., C.V., B.C.J.), and Viroscience (A.A.v.d.E.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Department of Neurology (H.A., T.H.), Aarhus University Hospital, Denmark; Department of Neurology (G.A.), Mental Health and Sensory Organs (NESMOS), Faculty of Medicine and Psychology, University of Rome 'Sapienza,' Sant' Andrea Hospital, Italy; Department of Neurology (S. Arends), Haga Teaching Hospital, The Hague, the Netherlands; Department of Neurology (S. Attarian), Reference Centre for NMD, CHU Timone, Marseille, France; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, FLENI, Buenos Aires, Argentina; Division of Neurology (K.J.B., E.L.P.), Department of Medicine, Groote Schuur Hospital, University of Cape Town, South Africa; Department RH-MDC-Immunology (M.R.B., M.M.), Reinier de Graaf Gasthuis, Delft, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (B.v.d.B., F.H.V.), Franciscus Gasthuis & Vlietland, Schiedam, the Netherlands; Department of Neurology (P.V.d.B.), University Hospital St. Luc, University of Louvain, Brussels, Belgium; Department of Neurology (J.B.), Saarland University Medical School, Homburg (previous hospital), and MVZ Pfalzklinikum (J.B.), Kusel, Germany (current hospital); Department of Neurology (M.B.), Leeds Teaching Hospitals, United Kingdom; Department of Neurology (C.C., V.N.-H.), Neuromuscular Unit, Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Department of Neurology (D.R.C.), Johns Hopkins University, Baltimore, MD; Institute of Infection, Immunity and Inflammation (A.D., H.J.W.), University of Glasgow, United Kingdom; National Hospital Copenhagen (C.D.d.l.C.), Copenhagen, Denmark; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Alberta, Canada; Nuffield Department of Clinical Neurosciences (J.F., S.R.), University of Oxford, John Radcliffe Hospital, United Kingdom; Department of Neurology (T.G.-S., J.P.), Hospital Clínico de Santiago, Spain; Neurology, Neuromuscular Diseases, Electromyography (J.M.G.), Hospital for Special Surgery; Weill Medical College of Cornell University (J.M.G.), New York; Department of Neurology (K.C.G., B.S.), Tufts University School of Medicine, Boston, MA; Department of Neurology (V.G.), Montefiore Medical Center, New York; Department of Neurology (R.D.M.H.), King's College Hospital, London, United Kingdom; Department of Neurology (H.-P.H.), University of Düsseldorf, Germany; Brain and Mind Centre (H.-P.H.), University of Sydney, Australia; Department of Neurology (H.-P.H.), Medical University of Vienna, Austria; Laboratory of Gut-Brain Signaling (I.H., I.J., Z.I., Q.D.M.), Laboratory Sciences and Services Division, icddr,b, Dhaka, Bangladesh; Department of Neurology (J.V.H., S.H.S.), Odense University Hospital, Denmark; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, United Kingdom; Department of Neurology (S. Karafiath), Utah Valley University, Orem; Department of Neurology (H.D.K.), University Health Network, University of Toronto, ON, Canada; Department of Neurology (R.P.K., K.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (N.K.), University of Vermont Medical Centre, Burlington; Department of Neurology (M.K., S. Kusunoki), Kindai University, Faculty of Medicine, Osaka, Japan; Department of Neurology (L.W.G.L., L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (S. Kuwabara), Chiba University, Japan; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (L.M.-A., L.Q.), Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, Spain; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, United Kingdom; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Research Hospital, Milan University, Italy; Department of Clinical Neurophysiology (Y.P.), Reference Centre for NMD, CHU Nantes, France; Department of Neurology (R.R.), Hospital Británico, Buenos Aires, Argentina; Department of Immunology (W.V.R., A.P.T.-G., R.H., B.C.J.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Department of Neurology (S.R.), Oxford University Hospitals NHS Foundation Trust, John Radcliffe Hospital; Department of Neurology (R.C.R.), Cambridge University Hospitals NHS Foundation Trust, Addenbrooke's Hospital, Cambridge Biomedical Campus, United Kingdom; Department of Medicine (N.S., T.C.-Y.), University of Malaya, Kuala Lumpur; Department of Neurology (S.H.S.), University of Southern Denmark, Odense; Department of Clinical Neurophysiology (H.T.), Aarhus University Hospital, Denmark; and Hospital Universitario Marques de Valdecilla (M.J.S.T.), Santander, Cantabria, Spain.; Tio-Gillen AP; From the Departments of Neurology (S.E.L., S. Arends, B.v.d.B., A.Y.D., P.A.v.D., K.K., L.W.G.L., W.V.R., J.R., C.V., B.C.J.), and Viroscience (A.A.v.d.E.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Department of Neurology (H.A., T.H.), Aarhus University Hospital, Denmark; Department of Neurology (G.A.), Mental Health and Sensory Organs (NESMOS), Faculty of Medicine and Psychology, University of Rome 'Sapienza,' Sant' Andrea Hospital, Italy; Department of Neurology (S. Arends), Haga Teaching Hospital, The Hague, the Netherlands; Department of Neurology (S. Attarian), Reference Centre for NMD, CHU Timone, Marseille, France; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, FLENI, Buenos Aires, Argentina; Division of Neurology (K.J.B., E.L.P.), Department of Medicine, Groote Schuur Hospital, University of Cape Town, South Africa; Department RH-MDC-Immunology (M.R.B., M.M.), Reinier de Graaf Gasthuis, Delft, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (B.v.d.B., F.H.V.), Franciscus Gasthuis & Vlietland, Schiedam, the Netherlands; Department of Neurology (P.V.d.B.), University Hospital St. Luc, University of Louvain, Brussels, Belgium; Department of Neurology (J.B.), Saarland University Medical School, Homburg (previous hospital), and MVZ Pfalzklinikum (J.B.), Kusel, Germany (current hospital); Department of Neurology (M.B.), Leeds Teaching Hospitals, United Kingdom; Department of Neurology (C.C., V.N.-H.), Neuromuscular Unit, Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Department of Neurology (D.R.C.), Johns Hopkins University, Baltimore, MD; Institute of Infection, Immunity and Inflammation (A.D., H.J.W.), University of Glasgow, United Kingdom; National Hospital Copenhagen (C.D.d.l.C.), Copenhagen, Denmark; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Alberta, Canada; Nuffield Department of Clinical Neurosciences (J.F., S.R.), University of Oxford, John Radcliffe Hospital, United Kingdom; Department of Neurology (T.G.-S., J.P.), Hospital Clínico de Santiago, Spain; Neurology, Neuromuscular Diseases, Electromyography (J.M.G.), Hospital for Special Surgery; Weill Medical College of Cornell University (J.M.G.), New York; Department of Neurology (K.C.G., B.S.), Tufts University School of Medicine, Boston, MA; Department of Neurology (V.G.), Montefiore Medical Center, New York; Department of Neurology (R.D.M.H.), King's College Hospital, London, United Kingdom; Department of Neurology (H.-P.H.), University of Düsseldorf, Germany; Brain and Mind Centre (H.-P.H.), University of Sydney, Australia; Department of Neurology (H.-P.H.), Medical University of Vienna, Austria; Laboratory of Gut-Brain Signaling (I.H., I.J., Z.I., Q.D.M.), Laboratory Sciences and Services Division, icddr,b, Dhaka, Bangladesh; Department of Neurology (J.V.H., S.H.S.), Odense University Hospital, Denmark; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, United Kingdom; Department of Neurology (S. Karafiath), Utah Valley University, Orem; Department of Neurology (H.D.K.), University Health Network, University of Toronto, ON, Canada; Department of Neurology (R.P.K., K.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (N.K.), University of Vermont Medical Centre, Burlington; Department of Neurology (M.K., S. Kusunoki), Kindai University, Faculty of Medicine, Osaka, Japan; Department of Neurology (L.W.G.L., L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (S. Kuwabara), Chiba University, Japan; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (L.M.-A., L.Q.), Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, Spain; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, United Kingdom; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Research Hospital, Milan University, Italy; Department of Clinical Neurophysiology (Y.P.), Reference Centre for NMD, CHU Nantes, France; Department of Neurology (R.R.), Hospital Británico, Buenos Aires, Argentina; Department of Immunology (W.V.R., A.P.T.-G., R.H., B.C.J.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Department of Neurology (S.R.), Oxford University Hospitals NHS Foundation Trust, John Radcliffe Hospital; Department of Neurology (R.C.R.), Cambridge University Hospitals NHS Foundation Trust, Addenbrooke's Hospital, Cambridge Biomedical Campus, United Kingdom; Department of Medicine (N.S., T.C.-Y.), University of Malaya, Kuala Lumpur; Department of Neurology (S.H.S.), University of Southern Denmark, Odense; Department of Clinical Neurophysiology (H.T.), Aarhus University Hospital, Denmark; and Hospital Universitario Marques de Valdecilla (M.J.S.T.), Santander, Cantabria, Spain.; Sedano Tous MJ; From the Departments of Neurology (S.E.L., S. Arends, B.v.d.B., A.Y.D., P.A.v.D., K.K., L.W.G.L., W.V.R., J.R., C.V., B.C.J.), and Viroscience (A.A.v.d.E.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Department of Neurology (H.A., T.H.), Aarhus University Hospital, Denmark; Department of Neurology (G.A.), Mental Health and Sensory Organs (NESMOS), Faculty of Medicine and Psychology, University of Rome 'Sapienza,' Sant' Andrea Hospital, Italy; Department of Neurology (S. Arends), Haga Teaching Hospital, The Hague, the Netherlands; Department of Neurology (S. Attarian), Reference Centre for NMD, CHU Timone, Marseille, France; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, FLENI, Buenos Aires, Argentina; Division of Neurology (K.J.B., E.L.P.), Department of Medicine, Groote Schuur Hospital, University of Cape Town, South Africa; Department RH-MDC-Immunology (M.R.B., M.M.), Reinier de Graaf Gasthuis, Delft, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (B.v.d.B., F.H.V.), Franciscus Gasthuis & Vlietland, Schiedam, the Netherlands; Department of Neurology (P.V.d.B.), University Hospital St. Luc, University of Louvain, Brussels, Belgium; Department of Neurology (J.B.), Saarland University Medical School, Homburg (previous hospital), and MVZ Pfalzklinikum (J.B.), Kusel, Germany (current hospital); Department of Neurology (M.B.), Leeds Teaching Hospitals, United Kingdom; Department of Neurology (C.C., V.N.-H.), Neuromuscular Unit, Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Department of Neurology (D.R.C.), Johns Hopkins University, Baltimore, MD; Institute of Infection, Immunity and Inflammation (A.D., H.J.W.), University of Glasgow, United Kingdom; National Hospital Copenhagen (C.D.d.l.C.), Copenhagen, Denmark; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Alberta, Canada; Nuffield Department of Clinical Neurosciences (J.F., S.R.), University of Oxford, John Radcliffe Hospital, United Kingdom; Department of Neurology (T.G.-S., J.P.), Hospital Clínico de Santiago, Spain; Neurology, Neuromuscular Diseases, Electromyography (J.M.G.), Hospital for Special Surgery; Weill Medical College of Cornell University (J.M.G.), New York; Department of Neurology (K.C.G., B.S.), Tufts University School of Medicine, Boston, MA; Department of Neurology (V.G.), Montefiore Medical Center, New York; Department of Neurology (R.D.M.H.), King's College Hospital, London, United Kingdom; Department of Neurology (H.-P.H.), University of Düsseldorf, Germany; Brain and Mind Centre (H.-P.H.), University of Sydney, Australia; Department of Neurology (H.-P.H.), Medical University of Vienna, Austria; Laboratory of Gut-Brain Signaling (I.H., I.J., Z.I., Q.D.M.), Laboratory Sciences and Services Division, icddr,b, Dhaka, Bangladesh; Department of Neurology (J.V.H., S.H.S.), Odense University Hospital, Denmark; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, United Kingdom; Department of Neurology (S. Karafiath), Utah Valley University, Orem; Department of Neurology (H.D.K.), University Health Network, University of Toronto, ON, Canada; Department of Neurology (R.P.K., K.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (N.K.), University of Vermont Medical Centre, Burlington; Department of Neurology (M.K., S. Kusunoki), Kindai University, Faculty of Medicine, Osaka, Japan; Department of Neurology (L.W.G.L., L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (S. Kuwabara), Chiba University, Japan; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (L.M.-A., L.Q.), Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, Spain; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, United Kingdom; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Research Hospital, Milan University, Italy; Department of Clinical Neurophysiology (Y.P.), Reference Centre for NMD, CHU Nantes, France; Department of Neurology (R.R.), Hospital Británico, Buenos Aires, Argentina; Department of Immunology (W.V.R., A.P.T.-G., R.H., B.C.J.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Department of Neurology (S.R.), Oxford University Hospitals NHS Foundation Trust, John Radcliffe Hospital; Department of Neurology (R.C.R.), Cambridge University Hospitals NHS Foundation Trust, Addenbrooke's Hospital, Cambridge Biomedical Campus, United Kingdom; Department of Medicine (N.S., T.C.-Y.), University of Malaya, Kuala Lumpur; Department of Neurology (S.H.S.), University of Southern Denmark, Odense; Department of Clinical Neurophysiology (H.T.), Aarhus University Hospital, Denmark; and Hospital Universitario Marques de Valdecilla (M.J.S.T.), Santander, Cantabria, Spain.; Verboon C; From the Departments of Neurology (S.E.L., S. Arends, B.v.d.B., A.Y.D., P.A.v.D., K.K., L.W.G.L., W.V.R., J.R., C.V., B.C.J.), and Viroscience (A.A.v.d.E.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Department of Neurology (H.A., T.H.), Aarhus University Hospital, Denmark; Department of Neurology (G.A.), Mental Health and Sensory Organs (NESMOS), Faculty of Medicine and Psychology, University of Rome 'Sapienza,' Sant' Andrea Hospital, Italy; Department of Neurology (S. Arends), Haga Teaching Hospital, The Hague, the Netherlands; Department of Neurology (S. Attarian), Reference Centre for NMD, CHU Timone, Marseille, France; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, FLENI, Buenos Aires, Argentina; Division of Neurology (K.J.B., E.L.P.), Department of Medicine, Groote Schuur Hospital, University of Cape Town, South Africa; Department RH-MDC-Immunology (M.R.B., M.M.), Reinier de Graaf Gasthuis, Delft, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (B.v.d.B., F.H.V.), Franciscus Gasthuis & Vlietland, Schiedam, the Netherlands; Department of Neurology (P.V.d.B.), University Hospital St. Luc, University of Louvain, Brussels, Belgium; Department of Neurology (J.B.), Saarland University Medical School, Homburg (previous hospital), and MVZ Pfalzklinikum (J.B.), Kusel, Germany (current hospital); Department of Neurology (M.B.), Leeds Teaching Hospitals, United Kingdom; Department of Neurology (C.C., V.N.-H.), Neuromuscular Unit, Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Department of Neurology (D.R.C.), Johns Hopkins University, Baltimore, MD; Institute of Infection, Immunity and Inflammation (A.D., H.J.W.), University of Glasgow, United Kingdom; National Hospital Copenhagen (C.D.d.l.C.), Copenhagen, Denmark; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Alberta, Canada; Nuffield Department of Clinical Neurosciences (J.F., S.R.), University of Oxford, John Radcliffe Hospital, United Kingdom; Department of Neurology (T.G.-S., J.P.), Hospital Clínico de Santiago, Spain; Neurology, Neuromuscular Diseases, Electromyography (J.M.G.), Hospital for Special Surgery; Weill Medical College of Cornell University (J.M.G.), New York; Department of Neurology (K.C.G., B.S.), Tufts University School of Medicine, Boston, MA; Department of Neurology (V.G.), Montefiore Medical Center, New York; Department of Neurology (R.D.M.H.), King's College Hospital, London, United Kingdom; Department of Neurology (H.-P.H.), University of Düsseldorf, Germany; Brain and Mind Centre (H.-P.H.), University of Sydney, Australia; Department of Neurology (H.-P.H.), Medical University of Vienna, Austria; Laboratory of Gut-Brain Signaling (I.H., I.J., Z.I., Q.D.M.), Laboratory Sciences and Services Division, icddr,b, Dhaka, Bangladesh; Department of Neurology (J.V.H., S.H.S.), Odense University Hospital, Denmark; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, United Kingdom; Department of Neurology (S. Karafiath), Utah Valley University, Orem; Department of Neurology (H.D.K.), University Health Network, University of Toronto, ON, Canada; Department of Neurology (R.P.K., K.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (N.K.), University of Vermont Medical Centre, Burlington; Department of Neurology (M.K., S. Kusunoki), Kindai University, Faculty of Medicine, Osaka, Japan; Department of Neurology (L.W.G.L., L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (S. Kuwabara), Chiba University, Japan; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (L.M.-A., L.Q.), Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, Spain; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, United Kingdom; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Research Hospital, Milan University, Italy; Department of Clinical Neurophysiology (Y.P.), Reference Centre for NMD, CHU Nantes, France; Department of Neurology (R.R.), Hospital Británico, Buenos Aires, Argentina; Department of Immunology (W.V.R., A.P.T.-G., R.H., B.C.J.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Department of Neurology (S.R.), Oxford University Hospitals NHS Foundation Trust, John Radcliffe Hospital; Department of Neurology (R.C.R.), Cambridge University Hospitals NHS Foundation Trust, Addenbrooke's Hospital, Cambridge Biomedical Campus, United Kingdom; Department of Medicine (N.S., T.C.-Y.), University of Malaya, Kuala Lumpur; Department of Neurology (S.H.S.), University of Southern Denmark, Odense; Department of Clinical Neurophysiology (H.T.), Aarhus University Hospital, Denmark; and Hospital Universitario Marques de Valdecilla (M.J.S.T.), Santander, Cantabria, Spain.; Vermeij FH; From the Departments of Neurology (S.E.L., S. Arends, B.v.d.B., A.Y.D., P.A.v.D., K.K., L.W.G.L., W.V.R., J.R., C.V., B.C.J.), and Viroscience (A.A.v.d.E.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Department of Neurology (H.A., T.H.), Aarhus University Hospital, Denmark; Department of Neurology (G.A.), Mental Health and Sensory Organs (NESMOS), Faculty of Medicine and Psychology, University of Rome 'Sapienza,' Sant' Andrea Hospital, Italy; Department of Neurology (S. Arends), Haga Teaching Hospital, The Hague, the Netherlands; Department of Neurology (S. Attarian), Reference Centre for NMD, CHU Timone, Marseille, France; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, FLENI, Buenos Aires, Argentina; Division of Neurology (K.J.B., E.L.P.), Department of Medicine, Groote Schuur Hospital, University of Cape Town, South Africa; Department RH-MDC-Immunology (M.R.B., M.M.), Reinier de Graaf Gasthuis, Delft, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (B.v.d.B., F.H.V.), Franciscus Gasthuis & Vlietland, Schiedam, the Netherlands; Department of Neurology (P.V.d.B.), University Hospital St. Luc, University of Louvain, Brussels, Belgium; Department of Neurology (J.B.), Saarland University Medical School, Homburg (previous hospital), and MVZ Pfalzklinikum (J.B.), Kusel, Germany (current hospital); Department of Neurology (M.B.), Leeds Teaching Hospitals, United Kingdom; Department of Neurology (C.C., V.N.-H.), Neuromuscular Unit, Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Department of Neurology (D.R.C.), Johns Hopkins University, Baltimore, MD; Institute of Infection, Immunity and Inflammation (A.D., H.J.W.), University of Glasgow, United Kingdom; National Hospital Copenhagen (C.D.d.l.C.), Copenhagen, Denmark; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Alberta, Canada; Nuffield Department of Clinical Neurosciences (J.F., S.R.), University of Oxford, John Radcliffe Hospital, United Kingdom; Department of Neurology (T.G.-S., J.P.), Hospital Clínico de Santiago, Spain; Neurology, Neuromuscular Diseases, Electromyography (J.M.G.), Hospital for Special Surgery; Weill Medical College of Cornell University (J.M.G.), New York; Department of Neurology (K.C.G., B.S.), Tufts University School of Medicine, Boston, MA; Department of Neurology (V.G.), Montefiore Medical Center, New York; Department of Neurology (R.D.M.H.), King's College Hospital, London, United Kingdom; Department of Neurology (H.-P.H.), University of Düsseldorf, Germany; Brain and Mind Centre (H.-P.H.), University of Sydney, Australia; Department of Neurology (H.-P.H.), Medical University of Vienna, Austria; Laboratory of Gut-Brain Signaling (I.H., I.J., Z.I., Q.D.M.), Laboratory Sciences and Services Division, icddr,b, Dhaka, Bangladesh; Department of Neurology (J.V.H., S.H.S.), Odense University Hospital, Denmark; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, United Kingdom; Department of Neurology (S. Karafiath), Utah Valley University, Orem; Department of Neurology (H.D.K.), University Health Network, University of Toronto, ON, Canada; Department of Neurology (R.P.K., K.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (N.K.), University of Vermont Medical Centre, Burlington; Department of Neurology (M.K., S. Kusunoki), Kindai University, Faculty of Medicine, Osaka, Japan; Department of Neurology (L.W.G.L., L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (S. Kuwabara), Chiba University, Japan; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (L.M.-A., L.Q.), Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, Spain; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, United Kingdom; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Research Hospital, Milan University, Italy; Department of Clinical Neurophysiology (Y.P.), Reference Centre for NMD, CHU Nantes, France; Department of Neurology (R.R.), Hospital Británico, Buenos Aires, Argentina; Department of Immunology (W.V.R., A.P.T.-G., R.H., B.C.J.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Department of Neurology (S.R.), Oxford University Hospitals NHS Foundation Trust, John Radcliffe Hospital; Department of Neurology (R.C.R.), Cambridge University Hospitals NHS Foundation Trust, Addenbrooke's Hospital, Cambridge Biomedical Campus, United Kingdom; Department of Medicine (N.S., T.C.-Y.), University of Malaya, Kuala Lumpur; Department of Neurology (S.H.S.), University of Southern Denmark, Odense; Department of Clinical Neurophysiology (H.T.), Aarhus University Hospital, Denmark; and Hospital Universitario Marques de Valdecilla (M.J.S.T.), Santander, Cantabria, Spain.; Visser LH; From the Departments of Neurology (S.E.L., S. Arends, B.v.d.B., A.Y.D., P.A.v.D., K.K., L.W.G.L., W.V.R., J.R., C.V., B.C.J.), and Viroscience (A.A.v.d.E.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Department of Neurology (H.A., T.H.), Aarhus University Hospital, Denmark; Department of Neurology (G.A.), Mental Health and Sensory Organs (NESMOS), Faculty of Medicine and Psychology, University of Rome 'Sapienza,' Sant' Andrea Hospital, Italy; Department of Neurology (S. Arends), Haga Teaching Hospital, The Hague, the Netherlands; Department of Neurology (S. Attarian), Reference Centre for NMD, CHU Timone, Marseille, France; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, FLENI, Buenos Aires, Argentina; Division of Neurology (K.J.B., E.L.P.), Department of Medicine, Groote Schuur Hospital, University of Cape Town, South Africa; Department RH-MDC-Immunology (M.R.B., M.M.), Reinier de Graaf Gasthuis, Delft, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (B.v.d.B., F.H.V.), Franciscus Gasthuis & Vlietland, Schiedam, the Netherlands; Department of Neurology (P.V.d.B.), University Hospital St. Luc, University of Louvain, Brussels, Belgium; Department of Neurology (J.B.), Saarland University Medical School, Homburg (previous hospital), and MVZ Pfalzklinikum (J.B.), Kusel, Germany (current hospital); Department of Neurology (M.B.), Leeds Teaching Hospitals, United Kingdom; Department of Neurology (C.C., V.N.-H.), Neuromuscular Unit, Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Department of Neurology (D.R.C.), Johns Hopkins University, Baltimore, MD; Institute of Infection, Immunity and Inflammation (A.D., H.J.W.), University of Glasgow, United Kingdom; National Hospital Copenhagen (C.D.d.l.C.), Copenhagen, Denmark; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Alberta, Canada; Nuffield Department of Clinical Neurosciences (J.F., S.R.), University of Oxford, John Radcliffe Hospital, United Kingdom; Department of Neurology (T.G.-S., J.P.), Hospital Clínico de Santiago, Spain; Neurology, Neuromuscular Diseases, Electromyography (J.M.G.), Hospital for Special Surgery; Weill Medical College of Cornell University (J.M.G.), New York; Department of Neurology (K.C.G., B.S.), Tufts University School of Medicine, Boston, MA; Department of Neurology (V.G.), Montefiore Medical Center, New York; Department of Neurology (R.D.M.H.), King's College Hospital, London, United Kingdom; Department of Neurology (H.-P.H.), University of Düsseldorf, Germany; Brain and Mind Centre (H.-P.H.), University of Sydney, Australia; Department of Neurology (H.-P.H.), Medical University of Vienna, Austria; Laboratory of Gut-Brain Signaling (I.H., I.J., Z.I., Q.D.M.), Laboratory Sciences and Services Division, icddr,b, Dhaka, Bangladesh; Department of Neurology (J.V.H., S.H.S.), Odense University Hospital, Denmark; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, United Kingdom; Department of Neurology (S. Karafiath), Utah Valley University, Orem; Department of Neurology (H.D.K.), University Health Network, University of Toronto, ON, Canada; Department of Neurology (R.P.K., K.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (N.K.), University of Vermont Medical Centre, Burlington; Department of Neurology (M.K., S. Kusunoki), Kindai University, Faculty of Medicine, Osaka, Japan; Department of Neurology (L.W.G.L., L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (S. Kuwabara), Chiba University, Japan; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (L.M.-A., L.Q.), Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, Spain; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, United Kingdom; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Research Hospital, Milan University, Italy; Department of Clinical Neurophysiology (Y.P.), Reference Centre for NMD, CHU Nantes, France; Department of Neurology (R.R.), Hospital Británico, Buenos Aires, Argentina; Department of Immunology (W.V.R., A.P.T.-G., R.H., B.C.J.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Department of Neurology (S.R.), Oxford University Hospitals NHS Foundation Trust, John Radcliffe Hospital; Department of Neurology (R.C.R.), Cambridge University Hospitals NHS Foundation Trust, Addenbrooke's Hospital, Cambridge Biomedical Campus, United Kingdom; Department of Medicine (N.S., T.C.-Y.), University of Malaya, Kuala Lumpur; Department of Neurology (S.H.S.), University of Southern Denmark, Odense; Department of Clinical Neurophysiology (H.T.), Aarhus University Hospital, Denmark; and Hospital Universitario Marques de Valdecilla (M.J.S.T.), Santander, Cantabria, Spain.; Huizinga R; From the Departments of Neurology (S.E.L., S. Arends, B.v.d.B., A.Y.D., P.A.v.D., K.K., L.W.G.L., W.V.R., J.R., C.V., B.C.J.), and Viroscience (A.A.v.d.E.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Department of Neurology (H.A., T.H.), Aarhus University Hospital, Denmark; Department of Neurology (G.A.), Mental Health and Sensory Organs (NESMOS), Faculty of Medicine and Psychology, University of Rome 'Sapienza,' Sant' Andrea Hospital, Italy; Department of Neurology (S. Arends), Haga Teaching Hospital, The Hague, the Netherlands; Department of Neurology (S. Attarian), Reference Centre for NMD, CHU Timone, Marseille, France; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, FLENI, Buenos Aires, Argentina; Division of Neurology (K.J.B., E.L.P.), Department of Medicine, Groote Schuur Hospital, University of Cape Town, South Africa; Department RH-MDC-Immunology (M.R.B., M.M.), Reinier de Graaf Gasthuis, Delft, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (B.v.d.B., F.H.V.), Franciscus Gasthuis & Vlietland, Schiedam, the Netherlands; Department of Neurology (P.V.d.B.), University Hospital St. Luc, University of Louvain, Brussels, Belgium; Department of Neurology (J.B.), Saarland University Medical School, Homburg (previous hospital), and MVZ Pfalzklinikum (J.B.), Kusel, Germany (current hospital); Department of Neurology (M.B.), Leeds Teaching Hospitals, United Kingdom; Department of Neurology (C.C., V.N.-H.), Neuromuscular Unit, Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Department of Neurology (D.R.C.), Johns Hopkins University, Baltimore, MD; Institute of Infection, Immunity and Inflammation (A.D., H.J.W.), University of Glasgow, United Kingdom; National Hospital Copenhagen (C.D.d.l.C.), Copenhagen, Denmark; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Alberta, Canada; Nuffield Department of Clinical Neurosciences (J.F., S.R.), University of Oxford, John Radcliffe Hospital, United Kingdom; Department of Neurology (T.G.-S., J.P.), Hospital Clínico de Santiago, Spain; Neurology, Neuromuscular Diseases, Electromyography (J.M.G.), Hospital for Special Surgery; Weill Medical College of Cornell University (J.M.G.), New York; Department of Neurology (K.C.G., B.S.), Tufts University School of Medicine, Boston, MA; Department of Neurology (V.G.), Montefiore Medical Center, New York; Department of Neurology (R.D.M.H.), King's College Hospital, London, United Kingdom; Department of Neurology (H.-P.H.), University of Düsseldorf, Germany; Brain and Mind Centre (H.-P.H.), University of Sydney, Australia; Department of Neurology (H.-P.H.), Medical University of Vienna, Austria; Laboratory of Gut-Brain Signaling (I.H., I.J., Z.I., Q.D.M.), Laboratory Sciences and Services Division, icddr,b, Dhaka, Bangladesh; Department of Neurology (J.V.H., S.H.S.), Odense University Hospital, Denmark; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, United Kingdom; Department of Neurology (S. Karafiath), Utah Valley University, Orem; Department of Neurology (H.D.K.), University Health Network, University of Toronto, ON, Canada; Department of Neurology (R.P.K., K.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (N.K.), University of Vermont Medical Centre, Burlington; Department of Neurology (M.K., S. Kusunoki), Kindai University, Faculty of Medicine, Osaka, Japan; Department of Neurology (L.W.G.L., L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (S. Kuwabara), Chiba University, Japan; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (L.M.-A., L.Q.), Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, Spain; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, United Kingdom; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Research Hospital, Milan University, Italy; Department of Clinical Neurophysiology (Y.P.), Reference Centre for NMD, CHU Nantes, France; Department of Neurology (R.R.), Hospital Británico, Buenos Aires, Argentina; Department of Immunology (W.V.R., A.P.T.-G., R.H., B.C.J.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Department of Neurology (S.R.), Oxford University Hospitals NHS Foundation Trust, John Radcliffe Hospital; Department of Neurology (R.C.R.), Cambridge University Hospitals NHS Foundation Trust, Addenbrooke's Hospital, Cambridge Biomedical Campus, United Kingdom; Department of Medicine (N.S., T.C.-Y.), University of Malaya, Kuala Lumpur; Department of Neurology (S.H.S.), University of Southern Denmark, Odense; Department of Clinical Neurophysiology (H.T.), Aarhus University Hospital, Denmark; and Hospital Universitario Marques de Valdecilla (M.J.S.T.), Santander, Cantabria, Spain.; Willison HJ; From the Departments of Neurology (S.E.L., S. Arends, B.v.d.B., A.Y.D., P.A.v.D., K.K., L.W.G.L., W.V.R., J.R., C.V., B.C.J.), and Viroscience (A.A.v.d.E.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Department of Neurology (H.A., T.H.), Aarhus University Hospital, Denmark; Department of Neurology (G.A.), Mental Health and Sensory Organs (NESMOS), Faculty of Medicine and Psychology, University of Rome 'Sapienza,' Sant' Andrea Hospital, Italy; Department of Neurology (S. Arends), Haga Teaching Hospital, The Hague, the Netherlands; Department of Neurology (S. Attarian), Reference Centre for NMD, CHU Timone, Marseille, France; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, FLENI, Buenos Aires, Argentina; Division of Neurology (K.J.B., E.L.P.), Department of Medicine, Groote Schuur Hospital, University of Cape Town, South Africa; Department RH-MDC-Immunology (M.R.B., M.M.), Reinier de Graaf Gasthuis, Delft, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (B.v.d.B., F.H.V.), Franciscus Gasthuis & Vlietland, Schiedam, the Netherlands; Department of Neurology (P.V.d.B.), University Hospital St. Luc, University of Louvain, Brussels, Belgium; Department of Neurology (J.B.), Saarland University Medical School, Homburg (previous hospital), and MVZ Pfalzklinikum (J.B.), Kusel, Germany (current hospital); Department of Neurology (M.B.), Leeds Teaching Hospitals, United Kingdom; Department of Neurology (C.C., V.N.-H.), Neuromuscular Unit, Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Department of Neurology (D.R.C.), Johns Hopkins University, Baltimore, MD; Institute of Infection, Immunity and Inflammation (A.D., H.J.W.), University of Glasgow, United Kingdom; National Hospital Copenhagen (C.D.d.l.C.), Copenhagen, Denmark; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Alberta, Canada; Nuffield Department of Clinical Neurosciences (J.F., S.R.), University of Oxford, John Radcliffe Hospital, United Kingdom; Department of Neurology (T.G.-S., J.P.), Hospital Clínico de Santiago, Spain; Neurology, Neuromuscular Diseases, Electromyography (J.M.G.), Hospital for Special Surgery; Weill Medical College of Cornell University (J.M.G.), New York; Department of Neurology (K.C.G., B.S.), Tufts University School of Medicine, Boston, MA; Department of Neurology (V.G.), Montefiore Medical Center, New York; Department of Neurology (R.D.M.H.), King's College Hospital, London, United Kingdom; Department of Neurology (H.-P.H.), University of Düsseldorf, Germany; Brain and Mind Centre (H.-P.H.), University of Sydney, Australia; Department of Neurology (H.-P.H.), Medical University of Vienna, Austria; Laboratory of Gut-Brain Signaling (I.H., I.J., Z.I., Q.D.M.), Laboratory Sciences and Services Division, icddr,b, Dhaka, Bangladesh; Department of Neurology (J.V.H., S.H.S.), Odense University Hospital, Denmark; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, United Kingdom; Department of Neurology (S. Karafiath), Utah Valley University, Orem; Department of Neurology (H.D.K.), University Health Network, University of Toronto, ON, Canada; Department of Neurology (R.P.K., K.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (N.K.), University of Vermont Medical Centre, Burlington; Department of Neurology (M.K., S. Kusunoki), Kindai University, Faculty of Medicine, Osaka, Japan; Department of Neurology (L.W.G.L., L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (S. Kuwabara), Chiba University, Japan; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (L.M.-A., L.Q.), Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, Spain; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, United Kingdom; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Research Hospital, Milan University, Italy; Department of Clinical Neurophysiology (Y.P.), Reference Centre for NMD, CHU Nantes, France; Department of Neurology (R.R.), Hospital Británico, Buenos Aires, Argentina; Department of Immunology (W.V.R., A.P.T.-G., R.H., B.C.J.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Department of Neurology (S.R.), Oxford University Hospitals NHS Foundation Trust, John Radcliffe Hospital; Department of Neurology (R.C.R.), Cambridge University Hospitals NHS Foundation Trust, Addenbrooke's Hospital, Cambridge Biomedical Campus, United Kingdom; Department of Medicine (N.S., T.C.-Y.), University of Malaya, Kuala Lumpur; Department of Neurology (S.H.S.), University of Southern Denmark, Odense; Department of Clinical Neurophysiology (H.T.), Aarhus University Hospital, Denmark; and Hospital Universitario Marques de Valdecilla (M.J.S.T.), Santander, Cantabria, Spain.; Jacobs BC; From the Departments of Neurology (S.E.L., S. Arends, B.v.d.B., A.Y.D., P.A.v.D., K.K., L.W.G.L., W.V.R., J.R., C.V., B.C.J.), and Viroscience (A.A.v.d.E.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Department of Neurology (H.A., T.H.), Aarhus University Hospital, Denmark; Department of Neurology (G.A.), Mental Health and Sensory Organs (NESMOS), Faculty of Medicine and Psychology, University of Rome 'Sapienza,' Sant' Andrea Hospital, Italy; Department of Neurology (S. Arends), Haga Teaching Hospital, The Hague, the Netherlands; Department of Neurology (S. Attarian), Reference Centre for NMD, CHU Timone, Marseille, France; Department of Neurology (F.A.B.), Instituto de Investigaciones Neurológicas Raúl Carrea, FLENI, Buenos Aires, Argentina; Division of Neurology (K.J.B., E.L.P.), Department of Medicine, Groote Schuur Hospital, University of Cape Town, South Africa; Department RH-MDC-Immunology (M.R.B., M.M.), Reinier de Graaf Gasthuis, Delft, the Netherlands; Department of Neurology (L.B.), IRCCS Ospedale Policlinico San Martino, Genova, Italy; Department of Neurology (B.v.d.B., F.H.V.), Franciscus Gasthuis & Vlietland, Schiedam, the Netherlands; Department of Neurology (P.V.d.B.), University Hospital St. Luc, University of Louvain, Brussels, Belgium; Department of Neurology (J.B.), Saarland University Medical School, Homburg (previous hospital), and MVZ Pfalzklinikum (J.B.), Kusel, Germany (current hospital); Department of Neurology (M.B.), Leeds Teaching Hospitals, United Kingdom; Department of Neurology (C.C., V.N.-H.), Neuromuscular Unit, Bellvitge University Hospital-IDIBELL, CIBERER, Barcelona, Spain; Department of Neurology (D.R.C.), Johns Hopkins University, Baltimore, MD; Institute of Infection, Immunity and Inflammation (A.D., H.J.W.), University of Glasgow, United Kingdom; National Hospital Copenhagen (C.D.d.l.C.), Copenhagen, Denmark; Department of Clinical Neurosciences (T.E.F.), University of Calgary, Alberta, Canada; Nuffield Department of Clinical Neurosciences (J.F., S.R.), University of Oxford, John Radcliffe Hospital, United Kingdom; Department of Neurology (T.G.-S., J.P.), Hospital Clínico de Santiago, Spain; Neurology, Neuromuscular Diseases, Electromyography (J.M.G.), Hospital for Special Surgery; Weill Medical College of Cornell University (J.M.G.), New York; Department of Neurology (K.C.G., B.S.), Tufts University School of Medicine, Boston, MA; Department of Neurology (V.G.), Montefiore Medical Center, New York; Department of Neurology (R.D.M.H.), King's College Hospital, London, United Kingdom; Department of Neurology (H.-P.H.), University of Düsseldorf, Germany; Brain and Mind Centre (H.-P.H.), University of Sydney, Australia; Department of Neurology (H.-P.H.), Medical University of Vienna, Austria; Laboratory of Gut-Brain Signaling (I.H., I.J., Z.I., Q.D.M.), Laboratory Sciences and Services Division, icddr,b, Dhaka, Bangladesh; Department of Neurology (J.V.H., S.H.S.), Odense University Hospital, Denmark; Department of Neurology (J.K.L.H.), The Walton Centre, Liverpool, United Kingdom; Department of Neurology (S. Karafiath), Utah Valley University, Orem; Department of Neurology (H.D.K.), University Health Network, University of Toronto, ON, Canada; Department of Neurology (R.P.K., K.K.), Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Neurology (N.K.), University of Vermont Medical Centre, Burlington; Department of Neurology (M.K., S. Kusunoki), Kindai University, Faculty of Medicine, Osaka, Japan; Department of Neurology (L.W.G.L., L.H.V.), St. Elisabeth-TweeSteden Hospital, Tilburg, the Netherlands; Department of Neurology (S. Kuwabara), Chiba University, Japan; Department of Neurology (H.C.L.), University Hospital of Cologne, Germany; Department of Neurology (L.M.-A., L.Q.), Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, Spain; Department of Neurology (J.A.L.M.), Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, United Kingdom; Department of Neurology (S.M.), Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina; Neuromuscular and Neuroimmunology Service (E.N.-O.), IRCCS Humanitas Research Hospital, Milan University, Italy; Department of Clinical Neurophysiology (Y.P.), Reference Centre for NMD, CHU Nantes, France; Department of Neurology (R.R.), Hospital Británico, Buenos Aires, Argentina; Department of Immunology (W.V.R., A.P.T.-G., R.H., B.C.J.), Erasmus MC University Medical Center, Rotterdam, the Netherlands; Department of Neurology (S.R.), Oxford University Hospitals NHS Foundation Trust, John Radcliffe Hospital; Department of Neurology (R.C.R.), Cambridge University Hospitals NHS Foundation Trust, Addenbrooke's Hospital, Cambridge Biomedical Campus, United Kingdom; Department of Medicine (N.S., T.C.-Y.), University of Malaya, Kuala Lumpur; Department of Neurology (S.H.S.), University of Southern Denmark, Odense; Department of Clinical Neurophysiology (H.T.), Aarhus University Hospital, Denmark; and Hospital Universitario Marques de Valdecilla (M.J.S.T.), Santander, Cantabria, Spain. b.jacobs@erasmusmc.nl.