학술논문
'학술논문'
에서 검색결과 615건 | 목록
1~10
Academic Journal
Verjans M; Department of Paediatric Nephrology, University Hospitals Leuven, Louvain, Belgium.; Hindryckx A; Department of Obstetrics and Gynecology, University Hospitals Leuven, Louvain, Belgium.; Rosier K; Department of Genetics, University Hospitals Leuven, Louvain, Belgium.; Devriendt K; Department of Genetics, University Hospitals Leuven, Louvain, Belgium.; Mekahli D; Department of Paediatric Nephrology, University Hospitals Leuven, Louvain, Belgium.; Department of Cellular and Molecular Physiology, KUL, Louvain, Belgium.; Bockenhauer D; Department of Paediatric Nephrology, University Hospitals Leuven, Louvain, Belgium. detlef.bockenhauer@uzleuven.be.; Department of Cellular and Molecular Physiology, KUL, Louvain, Belgium. detlef.bockenhauer@uzleuven.be.; Great Ormond Street Hospital for Children and Department of Renal Medicine, UCL, London, UK. detlef.bockenhauer@uzleuven.be.
Publisher: Springer International Country of Publication: Germany NLM ID: 8708728 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1432-198X (Electronic) Linking ISSN: 0931041X NLM ISO Abbreviation: Pediatr Nephrol Subsets: MEDLINE
Academic Journal
Academic Journal
In Archives de pédiatrie May 2023 30(4):240-246
Academic Journal
In Archives de pédiatrie May 2023 30(4):247-250
Academic Journal
Dollfus H; ERN-EYE Centre de Référence Pour les Affections Rares en Génétique Ophtalmologique (CRMR CARGO), Institut de Génétique Médicale d'Alsace (IGMA), FSMR SENSGENE, Hôpitaux Universitaires de Strasbourg, Strasbourg, France. dollfus@unistra.fr.; Université de Strasbourg, UMRS_1112, Strasbourg, France. dollfus@unistra.fr.; Lilien MR; ERKNet Wilhelmina Children's Hospital, University Medical Center, Utrecht, The Netherlands.; Maffei P; Endo-ERN Department of Medicine (DIMED), 3rd Medical Clinic, Padua University, Padua, Italy.; Verloes A; ERN-ITHACA Department of Genetics, AP-HP - Université de Paris; INSERM UMR 1141 'NeuroDiderot', Hôpital Robert Debré, Paris, France.; Muller J; Laboratoires de Diagnostic Génétique, Hôpitaux Universitaires de Strasbourg, Strasbourg, France.; Unité Fonctionnelle de Bioinformatique Médicale Appliquée au Diagnostic (UF7363), Hôpitaux Universitaires de Strasbourg, Université de Strasbourg, UMRS_1112, Strasbourg, France.; Bacci GM; ERN-EYE Pediatric Ophthalmology Unit, Meyer Children's Hospital IRCCS, University of Florence, Florence, Italy.; Cetiner M; ERKNet Children's Hospital, Pediatrics II, University of Essen, Essen, Germany.; van den Akker ELT; Endo-ERN Obesity Center CGG, Erasmus MC, University Medical Center Rotterdam, Division of Endocrinology, Department of Pediatrics, Erasmus MC-Sophia, University Medical Center Rotterdam, Rotterdam, The Netherlands.; Grudzinska Pechhacker M; ERN-EYE Coordination Center, Hôpitaux Universitaires de Strasbourg, Strasbourg, France.; Testa F; ERN-EYE Eye Clinic, Multidisciplinary Department of Medical, Surgical and Dental Sciences, University of Campania Luigi Vanvitelli, Naples, Italy.; Lacombe D; ERN-ITHACA Department of Medical Genetics, CHU Bordeaux, INSERM Unit_1211, Laboratory 'Rare Diseases: Genetics and Metabolism', University of Bordeaux, Bordeaux, France.; Stokman MF; ERKNet Department of Human Genetics, Radboud University Medical Centre, Nijmegen, The Netherlands.; Simonelli F; ERN-EYE Eye Clinic, Multidisciplinary Department of Medical, Surgical and Dental Sciences, University of Campania Luigi Vanvitelli, Naples, Italy.; Gouronc A; ERN-EYE Centre de Référence Pour les Affections Rares en Génétique Ophtalmologique (CRMR CARGO), Institut de Génétique Médicale d'Alsace (IGMA), FSMR SENSGENE, Hôpitaux Universitaires de Strasbourg, Strasbourg, France.; Université de Strasbourg, UMRS_1112, Strasbourg, France.; Laboratoires de Diagnostic Génétique, Hôpitaux Universitaires de Strasbourg, Strasbourg, France.; Unité Fonctionnelle de Bioinformatique Médicale Appliquée au Diagnostic (UF7363), Hôpitaux Universitaires de Strasbourg, Université de Strasbourg, UMRS_1112, Strasbourg, France.; Gavard A; ERN-EYE Coordination Center, Hôpitaux Universitaires de Strasbourg, Strasbourg, France.; van Haelst MM; ERN-ITHACA Department of Human Genetics, Section Clinical Genetics, Amsterdam UMC location University of Amsterdam, Amsterdam, The Netherlands.; Koenig J; ERKNet University Children's Hospital Muenster, Muenster, NRW, Germany.; Rossignol S; Endo-ERN Département de Pédiatrie, Hôpitaux Universitaires de Strasbourg, Strasbourg, France.; Bergmann C; Department of Medicine IV, Faculty of Medicine, Medical Center, University of Freiburg, Freiburg, Germany.; Medizinische Genetik Mainz, Limbach Genetics, Mainz, Germany.; Zacchia M; ERKNet Division of Nephrology, Department of Translational Medical Sciences, University of Campania 'L. Vanvitelli', Naples, Italy.; Leroy BP; ERN-EYE Department of Ophthalmology & Department of Head & Skin, Ghent University Hospital and Ghent University, Ghent, Belgium.; Center for Cellular and Molecular Therapeutics and Division of Ophthalmology, Children's Hospital of Philadelphia, Philadelphia, PA, USA.; Mosbah H; Endo-ERN Department of Endocrinology, Diabetology & Nutrition, University Hospital of Poitiers, Poitiers, France.; Van Eerde AM; ERKNet Department of Genetics, University Medical Center Utrecht, Utrecht, The Netherlands.; Mekahli D; ERKNet PKD Research Group, Department of Cellular and Molecular Medicine, KU Leuven, Leuven, Belgium.; Department of Pediatric Nephrology, University Hospitals Leuven, Leuven, Belgium.; Servais A; ERKNet Department of Kidney and Metabolic Diseases, Transplantation and Clinical Immunology, Necker Hospital, AP-HP, Centre of Reference for the French Nationwide MARHEANetwork (CNR-MARHEA), Paris, France.; Inserm U1163, Imagine Institute, Paris, France.; Poitou C; Endo-ERN Centre de Référence pour les obésités rares (CRMR PRADORT), Assistance Publique Hôpitaux de Paris, Pitié-Salpêtrière Hospital, Sorbonne Université, INSERM, Nutrition & Obesities: Systemic Approaches Research Group (NutriOmics), Paris, France.; Valverde D; CINBIO, Universidad de Vigo, Grupo de Investigación en Enfermedades Raras, Instituto de Investigación Sanitaria Galicia Sur (IIS Galicia Sur), Vigo, Spain.
Publisher: Nature Publishing Group Country of Publication: England NLM ID: 9302235 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1476-5438 (Electronic) Linking ISSN: 10184813 NLM ISO Abbreviation: Eur J Hum Genet Subsets: MEDLINE
Renal and Extrarenal Phenotypes in Patients With HNF1B Variants and Chromosome 17q12 Microdeletions.
Academic Journal
Buffin-Meyer B; National Institute of Health and Medical Research (INSERM), UMR 1297, Institute of Cardiovascular and Metabolic Disease, Toulouse, France.; University Paul Sabatier, Toulouse-III, Toulouse, France.; Richard J; Department of Pediatric Internal Medicine, Rheumatology and Nephrology, Toulouse University Hospital, Toulouse, France.; Centre De Référence Des Maladies Rénales Rares du Sud-Ouest (SORARE), Toulouse University Hospital, Toulouse, France.; Guigonis V; Department of Pediatrics, Hôpital Mère-Enfant, University Hospital of Limoges, Limoges, France.; Weber S; Pediatric Nephrology, University Children's Hospital Marburg, Marburg, Germany.; König J; Department of General Pediatrics, University Children's Hospital, Münster, Germany.; Heidet L; APHP, Service de Néphrologie Pédiatrique, Hôpital Universitaire Necker-Enfants malades, Paris, France.; Centre De Référence Des Maladies Rénales Héréditaires de l'Enfant et de l'Adulte (MARHEA), Paris, France.; Moussaoui N; National Institute of Health and Medical Research (INSERM), UMR 1297, Institute of Cardiovascular and Metabolic Disease, Toulouse, France.; Centre De Référence Des Maladies Rénales Rares du Sud-Ouest (SORARE), Toulouse University Hospital, Toulouse, France.; Filière ORphan KIdney Disease (ORKiD), Montpellier, France.; Vu JP; National Institute of Health and Medical Research (INSERM), UMR 1297, Institute of Cardiovascular and Metabolic Disease, Toulouse, France.; University Paul Sabatier, Toulouse-III, Toulouse, France.; Faguer S; National Institute of Health and Medical Research (INSERM), UMR 1297, Institute of Cardiovascular and Metabolic Disease, Toulouse, France.; University Paul Sabatier, Toulouse-III, Toulouse, France.; Centre De Référence Des Maladies Rénales Rares du Sud-Ouest (SORARE), Toulouse University Hospital, Toulouse, France.; Department of Nephrology and Organ Transplantation, University Hospital of Toulouse, and French Intensive Care Renal Network, Toulouse, France.; Casemayou A; National Institute of Health and Medical Research (INSERM), UMR 1297, Institute of Cardiovascular and Metabolic Disease, Toulouse, France.; University Paul Sabatier, Toulouse-III, Toulouse, France.; Centre De Référence Des Maladies Rénales Rares du Sud-Ouest (SORARE), Toulouse University Hospital, Toulouse, France.; Department of Nephrology and Organ Transplantation, University Hospital of Toulouse, and French Intensive Care Renal Network, Toulouse, France.; Prakash R; APHP, Service de Néphrologie Pédiatrique, Hôpital Universitaire Necker-Enfants malades, Paris, France.; Centre De Référence Des Maladies Rénales Héréditaires de l'Enfant et de l'Adulte (MARHEA), Paris, France.; Baudouin V; Nephrology Department, Robert Debré Hospital, APHP Nord, Paris University, Paris, France.; Hogan J; Nephrology Department, Robert Debré Hospital, APHP Nord, Paris University, Paris, France.; Alexandrou D; University College London Medical School, London, UK.; Bockenhauer D; University College London, Department of Renal Medicine, London, UK.; Renal Unit, Great Ormond Street Hospital for Children NHS Foundation Trust, London, UK.; Department of Pediatric Nephrology, University Hospitals Leuven, Leuven, Belgium.; Bacchetta J; Centre de Référence des Maladies Rénales Rares, Hôpital Femme Mère Enfant, Hospices Civils de Lyon, Bron, France.; INSERM 1033, Faculté de Médecine Lyon Est, Lyon, France.; Ranchin B; Centre de Référence des Maladies Rénales Rares, Hôpital Femme Mère Enfant, Hospices Civils de Lyon, Bron, France.; Pruhova S; Department of Pediatrics, 2nd Faculty of Medicine, Charles University, Prague, Czech Republic.; Zieg J; Department of Pediatrics, 2nd Faculty of Medicine, Charles University, Prague, Czech Republic.; Lahoche A; Unité de néphrologie, Hôpital Jeanne de Flandre, CHU Lille, Lille, France.; Okorn C; Department of Pediatrics II, University Hospital of Essen, University of Duisburg-Essen, Essen, Germany.; Antal-Kónya V; MTA-SE Lendület Nephrogenetic Laboratory, Budapest, Hungary.; Department of Pediatrics, Semmelweis University, Budapest, Hungary.; Morin D; Néphrologie Pédiatrique, CHU de Montpellier, Montpellier, France.; Centre De Référence Des Maladies Rénales Rares du Sud-Ouest (SORARE), Montpellier, France.; Université de Montpellier, Montpellier, France.; Becherucci F; Nephrology and Dialysis Unit, Meyer Children's Hospital IRCCS, Florence, Italy.; Habbig S; Department of Pediatrics, Faculty of Medicine and University Hospital Cologne, University of Cologne, Cologne, Germany.; Liebau MC; Department of Pediatrics and Center for Family Health, Center for Rare Diseases and Center for Molecular Medicine, University Hospital Cologne and Medical Faculty, University of Cologne, Cologne, Germany.; Mauras M; Department of Pediatrics, Hôpital Nord, CHU de Saint-Etienne, Saint-Etienne, France.; Nijenhuis T; Department of Nephrology, Radboud University Medical Center, Nijmegen, the Netherlands.; Llanas B; Unité de Néphrologie Pédiatrique, Hôpital Pellegrin-Enfants, CHU de Bordeaux, Centre de Références des Maladies rénales rares du Sud-Ouest (SORARE), Bordeaux, France.; Mekahli D; Department of Pediatric Nephrology, University Hospitals, Leuven, Belgium.; PKD Research Group, Department of Cellular and Molecular Medicine, KU Leuven, Leuven, Belgium.; Thumfart J; Department of Pediatric Gastroenterology, Nephrology and Metabolic Diseases, Charité Universitätsmedizin Berlin, Berlin, Germany.; Tönshoff B; Department of Pediatrics I, University Children's Hospital Heidelberg, Heidelberg, Germany.; Massella L; Division of Nephrology, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy.; Eckart P; Department of Pediatrics, University Hospital of Caen, Caen, France.; Cloarec S; Service de Néphrologie Pédiatrique, Hôpital Clocheville, CHRU, Tours, France.; Centre De Compétence Maladies Rénales Rares, Filière ORphan KIdney Disease (ORKiD), France.; Cruz A; Pediatric Nephrology, University Hospital Vall d'Hebron, Barcelona, Spain.; Patzer L; Klinik für Kinder- und Jugendmedizin, Krankenhaus St. Elisabeth und St. Barbara, Halle/Saale, Germany.; Roussey G; Service des Maladies Chroniques de l'Enfant, Hopital Mère Enfant, CHU Nantes, Nantes, France.; Centre De Référence Des Maladies Rénales Rares du Sud-Ouest (SORARE), Nantes, France.; Vrillon I; Service de Néphrologie Pédiatrique, Hôpital des Enfants, CHRU Nancy, Vandoeuvre les Nancy, France.; Dunand O; Service de Néphrologie Pédiatrique, CHU Réunion site Félix GUYON, St Denis, Ile de La Réunion, France.; Bessenay L; Department of Pediatric Nephrology, Centre Hospitalier Universitaire de Clermont-Ferrand, Clermont-Ferrand, France.; Taroni F; Pediatric Nephrology, Dialysis and Transplantation Unit Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico, Milan, Italy.; Zaniew M; Department of Pediatrics, University of Zielona Góra, Zielona Góra, Poland.; Louillet F; Département de Pédiatrie, Unité de Néphrologie-Hémodialyse, CHU Charles Nicolle, Rouen, France.; Bergmann C; Medizinische Genetik Mainz, Limbach Genetics, Mainz, Germany.; Department of Medicine IV, Faculty of Medicine, Medical Center-University of Freiburg, Freiburg, Germany.; Schaefer F; Division of Pediatric Nephrology, Heidelberg University Center for Pediatrics and Adolescent Medicine, Heidelberg, Germany.; van Eerde AM; Department of Genetics, UMC Utrecht, Utrecht, The Netherlands.; Schanstra JP; National Institute of Health and Medical Research (INSERM), UMR 1297, Institute of Cardiovascular and Metabolic Disease, Toulouse, France.; University Paul Sabatier, Toulouse-III, Toulouse, France.; Decramer S; National Institute of Health and Medical Research (INSERM), UMR 1297, Institute of Cardiovascular and Metabolic Disease, Toulouse, France.; Department of Pediatric Internal Medicine, Rheumatology and Nephrology, Toulouse University Hospital, Toulouse, France.; Centre De Référence Des Maladies Rénales Rares du Sud-Ouest (SORARE), Toulouse University Hospital, Toulouse, France.
Publisher: Elsevier Country of Publication: United States NLM ID: 101684752 Publication Model: eCollection Cited Medium: Internet ISSN: 2468-0249 (Electronic) Linking ISSN: 24680249 NLM ISO Abbreviation: Kidney Int Rep Subsets: PubMed not MEDLINE
Academic Journal
Dumoulin M; Department of Paediatrics, Leuven University Hospitals, Louvain, Belgium.; Pottel H; Department of Public Health and Primary Care, KU Leuven Campus Kulak, Kortrijk, Belgium.; Mekahli D; Department of Pediatric Nephrology, Leuven University Hospitals, Louvain, Belgium.; PKD Research Group, Department of Cellular and Molecular Medicine, KU Leuven, Louvain, Belgium.; Laenen A; Leuven Biostatistics and Statistical Bioinformatics Center (L-BioStat), KU Leuven, Louvain, Belgium.; Smits A; Department of Development and Regeneration, KU Leuven, Herestraat 49, 3000, Louvain, Belgium.; Neonatal Intensive Care Unit, Leuven University Hospitals, Louvain, Belgium.; Allegaert K; Department of Development and Regeneration, KU Leuven, Herestraat 49, 3000, Louvain, Belgium. k.allegaert@erasmusmc.nl.; Neonatal Intensive Care Unit, Leuven University Hospitals, Louvain, Belgium. k.allegaert@erasmusmc.nl.; Department of Pharmaceutical and Pharmacological Sciences, KU Leuven, Louvain, Belgium. k.allegaert@erasmusmc.nl.; Department of Hospital Pharmacy, Erasmus MC University Medical Center, Rotterdam, The Netherlands. k.allegaert@erasmusmc.nl.
Publisher: Springer International Country of Publication: Germany NLM ID: 8708728 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1432-198X (Electronic) Linking ISSN: 0931041X NLM ISO Abbreviation: Pediatr Nephrol Subsets: MEDLINE
Academic Journal
Academic Journal
A. DACHY; S. De Rechter; L.M. Guay-Woodford; A.J. Mallett; T. Harris; D. Böckenhauer; F. Schaefer; M.C. Liebau; D. Mekahli
Kidney International Reports, Vol 6, Iss 4, Pp S182- (2021)
Academic Journal
Morello W; From the Pediatric Nephrology, Dialysis, and Transplant Unit (W.M., G.P., J.S., G.M.) and the Pediatric Urology Unit (D.G.M.), Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico, and the Department of Clinical Sciences and Community Health, University of Milan (G.M.), Milan, the Department of General and Specialized Surgery for Women and Children, Università degli Studi della Campania 'Luigi Vanvitelli,' Naples (A.L.M., S.G., P.M.), the Institute for Maternal and Child Health-IRCCS Burlo Garofolo (M.P., E. Barbi) and the Department of Medical, Surgical, and Health Sciences, University of Trieste (E. Barbi), Trieste, Pediatric Nephrology and Dialysis, Pediatric Unit, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna (C.L.S., A.P.), the Nephrology and Dialysis Unit, Meyer Children's Hospital, Florence (F.B., M.M.), Pediatria C, Ospedale Donna Bambino, Verona (M.B.), the Pediatric Nephrology and Rheumatology Unit, Azienda Ospedaliera Universitaria Gaetano Martino, University of Messina, Messina (R.C.), the Nuclear Medicine Unit, Circolo Hospital and Macchi Foundation, Azienda Socio Sanitaria Territoriale Sette Laghi, Varese (D.D.P.), the Nuclear Medicine Unit, Department of Medicine, University Hospital of Padua (P.Z.), and the Pediatric Nephrology, Dialysis, and Transplantation Unit, Department of Women's and Children's Health, University of Padua (I.A.), Padua - all in Italy; the Department of Pediatric Nephrology, Başkent University Faculty of Medicine (E. Baskin, K.G.), and the Department of Pediatric Nephrology, Ankara University School of Medicine (F.Y., Z.B.O.), Ankara, the Department of Pediatric Nephrology and Pediatric Rheumatology, Pamukkale University School of Medicine, Denizli (S.Y.), and the Department of Pediatric Nephrology, Istanbul University-Cerrahpaşa, Cerrahpaşa School of Medicine, Istanbul (S.C.) - all in Turkey; the Pediatric Center, Institute of Clinical Medicine, Faculty of Medicine, Vilnius University, Vilnius (A.J., D.R.), and the Department of Radiology, Medical Academy, Lithuanian University of Health Sciences Kauno Klinikos, Kaunas (D.V.) - both in Lithuania; the Department of Pediatrics, Nephrology, and Hypertension, Medical University of Gdansk, Gdansk (A.Z., A.K.), the Department of Pediatrics and Nephrology, Medical University of Warsaw, Warsaw (G.K., A.S.), the Department of Pediatric Nephrology and Hypertension, Chair of Pediatrics, Pediatric Institute, Jagiellonian University Medical College, Krakow (D.D.), the Department of Pediatrics, Faculty of Medical Sciences in Zabrze, Medical University of Silesia in Katowice, Katowice (M.S.), the Department of Pediatrics and Nephrology, Medical University of Bialystok, Bialystok (K.T.-J.), and the Department of Pediatrics, Immunology, and Nephrology, Polish Mother's Memorial Hospital Research Institute, Lodz (M.T.) - all in Poland; the Department of Pediatric Nephrology, University Hospitals Leuven (D.M., S.D.R.), and PKD Research Group, Laboratory of Ion Channel Research, Department of Cellular and Molecular Medicine, KU Leuven (D.M.), Leuven, and the Division of Nephrology, Department of Pediatrics, University Hospital Center of Liège, Liège (J.L.) - all in Belgium; the Department of Pediatric Nephrology, University Hospital Vall d'Hebron, and Universidad Autónoma de Barcelona, Hospital Vall d'Hebron (G.A.), and Pediatric Nephrology, Hospital General de Granollers, Universitat Internacional de Catalunya (M.C.), Barcelona, and Hospital General Universitario Santa Lucía, Cartagena (J.E.C.S.) - all in Spain; the University of Cologne, Faculty of Medicine and University Hospital Cologne, Children's and Adolescents' Hospital, Cologne (L.T.W.), and the Division of Pediatric Nephrology, Center for Pediatrics and Adolescent Medicine, Heidelberg University Hospital, Heidelberg (O.M., F.S.) - both in Germany; and the Division of Pediatric Nephrology, Centro Materno Infantil do Norte, Centro Hospitalar Universitário do Porto, Porto, Portugal (A.C.A.).; Baskin E; From the Pediatric Nephrology, Dialysis, and Transplant Unit (W.M., G.P., J.S., G.M.) and the Pediatric Urology Unit (D.G.M.), Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico, and the Department of Clinical Sciences and Community Health, University of Milan (G.M.), Milan, the Department of General and Specialized Surgery for Women and Children, Università degli Studi della Campania 'Luigi Vanvitelli,' Naples (A.L.M., S.G., P.M.), the Institute for Maternal and Child Health-IRCCS Burlo Garofolo (M.P., E. Barbi) and the Department of Medical, Surgical, and Health Sciences, University of Trieste (E. Barbi), Trieste, Pediatric Nephrology and Dialysis, Pediatric Unit, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna (C.L.S., A.P.), the Nephrology and Dialysis Unit, Meyer Children's Hospital, Florence (F.B., M.M.), Pediatria C, Ospedale Donna Bambino, Verona (M.B.), the Pediatric Nephrology and Rheumatology Unit, Azienda Ospedaliera Universitaria Gaetano Martino, University of Messina, Messina (R.C.), the Nuclear Medicine Unit, Circolo Hospital and Macchi Foundation, Azienda Socio Sanitaria Territoriale Sette Laghi, Varese (D.D.P.), the Nuclear Medicine Unit, Department of Medicine, University Hospital of Padua (P.Z.), and the Pediatric Nephrology, Dialysis, and Transplantation Unit, Department of Women's and Children's Health, University of Padua (I.A.), Padua - all in Italy; the Department of Pediatric Nephrology, Başkent University Faculty of Medicine (E. Baskin, K.G.), and the Department of Pediatric Nephrology, Ankara University School of Medicine (F.Y., Z.B.O.), Ankara, the Department of Pediatric Nephrology and Pediatric Rheumatology, Pamukkale University School of Medicine, Denizli (S.Y.), and the Department of Pediatric Nephrology, Istanbul University-Cerrahpaşa, Cerrahpaşa School of Medicine, Istanbul (S.C.) - all in Turkey; the Pediatric Center, Institute of Clinical Medicine, Faculty of Medicine, Vilnius University, Vilnius (A.J., D.R.), and the Department of Radiology, Medical Academy, Lithuanian University of Health Sciences Kauno Klinikos, Kaunas (D.V.) - both in Lithuania; the Department of Pediatrics, Nephrology, and Hypertension, Medical University of Gdansk, Gdansk (A.Z., A.K.), the Department of Pediatrics and Nephrology, Medical University of Warsaw, Warsaw (G.K., A.S.), the Department of Pediatric Nephrology and Hypertension, Chair of Pediatrics, Pediatric Institute, Jagiellonian University Medical College, Krakow (D.D.), the Department of Pediatrics, Faculty of Medical Sciences in Zabrze, Medical University of Silesia in Katowice, Katowice (M.S.), the Department of Pediatrics and Nephrology, Medical University of Bialystok, Bialystok (K.T.-J.), and the Department of Pediatrics, Immunology, and Nephrology, Polish Mother's Memorial Hospital Research Institute, Lodz (M.T.) - all in Poland; the Department of Pediatric Nephrology, University Hospitals Leuven (D.M., S.D.R.), and PKD Research Group, Laboratory of Ion Channel Research, Department of Cellular and Molecular Medicine, KU Leuven (D.M.), Leuven, and the Division of Nephrology, Department of Pediatrics, University Hospital Center of Liège, Liège (J.L.) - all in Belgium; the Department of Pediatric Nephrology, University Hospital Vall d'Hebron, and Universidad Autónoma de Barcelona, Hospital Vall d'Hebron (G.A.), and Pediatric Nephrology, Hospital General de Granollers, Universitat Internacional de Catalunya (M.C.), Barcelona, and Hospital General Universitario Santa Lucía, Cartagena (J.E.C.S.) - all in Spain; the University of Cologne, Faculty of Medicine and University Hospital Cologne, Children's and Adolescents' Hospital, Cologne (L.T.W.), and the Division of Pediatric Nephrology, Center for Pediatrics and Adolescent Medicine, Heidelberg University Hospital, Heidelberg (O.M., F.S.) - both in Germany; and the Division of Pediatric Nephrology, Centro Materno Infantil do Norte, Centro Hospitalar Universitário do Porto, Porto, Portugal (A.C.A.).; Jankauskiene A; From the Pediatric Nephrology, Dialysis, and Transplant Unit (W.M., G.P., J.S., G.M.) and the Pediatric Urology Unit (D.G.M.), Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico, and the Department of Clinical Sciences and Community Health, University of Milan (G.M.), Milan, the Department of General and Specialized Surgery for Women and Children, Università degli Studi della Campania 'Luigi Vanvitelli,' Naples (A.L.M., S.G., P.M.), the Institute for Maternal and Child Health-IRCCS Burlo Garofolo (M.P., E. Barbi) and the Department of Medical, Surgical, and Health Sciences, University of Trieste (E. Barbi), Trieste, Pediatric Nephrology and Dialysis, Pediatric Unit, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna (C.L.S., A.P.), the Nephrology and Dialysis Unit, Meyer Children's Hospital, Florence (F.B., M.M.), Pediatria C, Ospedale Donna Bambino, Verona (M.B.), the Pediatric Nephrology and Rheumatology Unit, Azienda Ospedaliera Universitaria Gaetano Martino, University of Messina, Messina (R.C.), the Nuclear Medicine Unit, Circolo Hospital and Macchi Foundation, Azienda Socio Sanitaria Territoriale Sette Laghi, Varese (D.D.P.), the Nuclear Medicine Unit, Department of Medicine, University Hospital of Padua (P.Z.), and the Pediatric Nephrology, Dialysis, and Transplantation Unit, Department of Women's and Children's Health, University of Padua (I.A.), Padua - all in Italy; the Department of Pediatric Nephrology, Başkent University Faculty of Medicine (E. Baskin, K.G.), and the Department of Pediatric Nephrology, Ankara University School of Medicine (F.Y., Z.B.O.), Ankara, the Department of Pediatric Nephrology and Pediatric Rheumatology, Pamukkale University School of Medicine, Denizli (S.Y.), and the Department of Pediatric Nephrology, Istanbul University-Cerrahpaşa, Cerrahpaşa School of Medicine, Istanbul (S.C.) - all in Turkey; the Pediatric Center, Institute of Clinical Medicine, Faculty of Medicine, Vilnius University, Vilnius (A.J., D.R.), and the Department of Radiology, Medical Academy, Lithuanian University of Health Sciences Kauno Klinikos, Kaunas (D.V.) - both in Lithuania; the Department of Pediatrics, Nephrology, and Hypertension, Medical University of Gdansk, Gdansk (A.Z., A.K.), the Department of Pediatrics and Nephrology, Medical University of Warsaw, Warsaw (G.K., A.S.), the Department of Pediatric Nephrology and Hypertension, Chair of Pediatrics, Pediatric Institute, Jagiellonian University Medical College, Krakow (D.D.), the Department of Pediatrics, Faculty of Medical Sciences in Zabrze, Medical University of Silesia in Katowice, Katowice (M.S.), the Department of Pediatrics and Nephrology, Medical University of Bialystok, Bialystok (K.T.-J.), and the Department of Pediatrics, Immunology, and Nephrology, Polish Mother's Memorial Hospital Research Institute, Lodz (M.T.) - all in Poland; the Department of Pediatric Nephrology, University Hospitals Leuven (D.M., S.D.R.), and PKD Research Group, Laboratory of Ion Channel Research, Department of Cellular and Molecular Medicine, KU Leuven (D.M.), Leuven, and the Division of Nephrology, Department of Pediatrics, University Hospital Center of Liège, Liège (J.L.) - all in Belgium; the Department of Pediatric Nephrology, University Hospital Vall d'Hebron, and Universidad Autónoma de Barcelona, Hospital Vall d'Hebron (G.A.), and Pediatric Nephrology, Hospital General de Granollers, Universitat Internacional de Catalunya (M.C.), Barcelona, and Hospital General Universitario Santa Lucía, Cartagena (J.E.C.S.) - all in Spain; the University of Cologne, Faculty of Medicine and University Hospital Cologne, Children's and Adolescents' Hospital, Cologne (L.T.W.), and the Division of Pediatric Nephrology, Center for Pediatrics and Adolescent Medicine, Heidelberg University Hospital, Heidelberg (O.M., F.S.) - both in Germany; and the Division of Pediatric Nephrology, Centro Materno Infantil do Norte, Centro Hospitalar Universitário do Porto, Porto, Portugal (A.C.A.).; Yalcinkaya F; From the Pediatric Nephrology, Dialysis, and Transplant Unit (W.M., G.P., J.S., G.M.) and the Pediatric Urology Unit (D.G.M.), Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico, and the Department of Clinical Sciences and Community Health, University of Milan (G.M.), Milan, the Department of General and Specialized Surgery for Women and Children, Università degli Studi della Campania 'Luigi Vanvitelli,' Naples (A.L.M., S.G., P.M.), the Institute for Maternal and Child Health-IRCCS Burlo Garofolo (M.P., E. Barbi) and the Department of Medical, Surgical, and Health Sciences, University of Trieste (E. Barbi), Trieste, Pediatric Nephrology and Dialysis, Pediatric Unit, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna (C.L.S., A.P.), the Nephrology and Dialysis Unit, Meyer Children's Hospital, Florence (F.B., M.M.), Pediatria C, Ospedale Donna Bambino, Verona (M.B.), the Pediatric Nephrology and Rheumatology Unit, Azienda Ospedaliera Universitaria Gaetano Martino, University of Messina, Messina (R.C.), the Nuclear Medicine Unit, Circolo Hospital and Macchi Foundation, Azienda Socio Sanitaria Territoriale Sette Laghi, Varese (D.D.P.), the Nuclear Medicine Unit, Department of Medicine, University Hospital of Padua (P.Z.), and the Pediatric Nephrology, Dialysis, and Transplantation Unit, Department of Women's and Children's Health, University of Padua (I.A.), Padua - all in Italy; the Department of Pediatric Nephrology, Başkent University Faculty of Medicine (E. Baskin, K.G.), and the Department of Pediatric Nephrology, Ankara University School of Medicine (F.Y., Z.B.O.), Ankara, the Department of Pediatric Nephrology and Pediatric Rheumatology, Pamukkale University School of Medicine, Denizli (S.Y.), and the Department of Pediatric Nephrology, Istanbul University-Cerrahpaşa, Cerrahpaşa School of Medicine, Istanbul (S.C.) - all in Turkey; the Pediatric Center, Institute of Clinical Medicine, Faculty of Medicine, Vilnius University, Vilnius (A.J., D.R.), and the Department of Radiology, Medical Academy, Lithuanian University of Health Sciences Kauno Klinikos, Kaunas (D.V.) - both in Lithuania; the Department of Pediatrics, Nephrology, and Hypertension, Medical University of Gdansk, Gdansk (A.Z., A.K.), the Department of Pediatrics and Nephrology, Medical University of Warsaw, Warsaw (G.K., A.S.), the Department of Pediatric Nephrology and Hypertension, Chair of Pediatrics, Pediatric Institute, Jagiellonian University Medical College, Krakow (D.D.), the Department of Pediatrics, Faculty of Medical Sciences in Zabrze, Medical University of Silesia in Katowice, Katowice (M.S.), the Department of Pediatrics and Nephrology, Medical University of Bialystok, Bialystok (K.T.-J.), and the Department of Pediatrics, Immunology, and Nephrology, Polish Mother's Memorial Hospital Research Institute, Lodz (M.T.) - all in Poland; the Department of Pediatric Nephrology, University Hospitals Leuven (D.M., S.D.R.), and PKD Research Group, Laboratory of Ion Channel Research, Department of Cellular and Molecular Medicine, KU Leuven (D.M.), Leuven, and the Division of Nephrology, Department of Pediatrics, University Hospital Center of Liège, Liège (J.L.) - all in Belgium; the Department of Pediatric Nephrology, University Hospital Vall d'Hebron, and Universidad Autónoma de Barcelona, Hospital Vall d'Hebron (G.A.), and Pediatric Nephrology, Hospital General de Granollers, Universitat Internacional de Catalunya (M.C.), Barcelona, and Hospital General Universitario Santa Lucía, Cartagena (J.E.C.S.) - all in Spain; the University of Cologne, Faculty of Medicine and University Hospital Cologne, Children's and Adolescents' Hospital, Cologne (L.T.W.), and the Division of Pediatric Nephrology, Center for Pediatrics and Adolescent Medicine, Heidelberg University Hospital, Heidelberg (O.M., F.S.) - both in Germany; and the Division of Pediatric Nephrology, Centro Materno Infantil do Norte, Centro Hospitalar Universitário do Porto, Porto, Portugal (A.C.A.).; Zurowska A; From the Pediatric Nephrology, Dialysis, and Transplant Unit (W.M., G.P., J.S., G.M.) and the Pediatric Urology Unit (D.G.M.), Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico, and the Department of Clinical Sciences and Community Health, University of Milan (G.M.), Milan, the Department of General and Specialized Surgery for Women and Children, Università degli Studi della Campania 'Luigi Vanvitelli,' Naples (A.L.M., S.G., P.M.), the Institute for Maternal and Child Health-IRCCS Burlo Garofolo (M.P., E. Barbi) and the Department of Medical, Surgical, and Health Sciences, University of Trieste (E. Barbi), Trieste, Pediatric Nephrology and Dialysis, Pediatric Unit, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna (C.L.S., A.P.), the Nephrology and Dialysis Unit, Meyer Children's Hospital, Florence (F.B., M.M.), Pediatria C, Ospedale Donna Bambino, Verona (M.B.), the Pediatric Nephrology and Rheumatology Unit, Azienda Ospedaliera Universitaria Gaetano Martino, University of Messina, Messina (R.C.), the Nuclear Medicine Unit, Circolo Hospital and Macchi Foundation, Azienda Socio Sanitaria Territoriale Sette Laghi, Varese (D.D.P.), the Nuclear Medicine Unit, Department of Medicine, University Hospital of Padua (P.Z.), and the Pediatric Nephrology, Dialysis, and Transplantation Unit, Department of Women's and Children's Health, University of Padua (I.A.), Padua - all in Italy; the Department of Pediatric Nephrology, Başkent University Faculty of Medicine (E. Baskin, K.G.), and the Department of Pediatric Nephrology, Ankara University School of Medicine (F.Y., Z.B.O.), Ankara, the Department of Pediatric Nephrology and Pediatric Rheumatology, Pamukkale University School of Medicine, Denizli (S.Y.), and the Department of Pediatric Nephrology, Istanbul University-Cerrahpaşa, Cerrahpaşa School of Medicine, Istanbul (S.C.) - all in Turkey; the Pediatric Center, Institute of Clinical Medicine, Faculty of Medicine, Vilnius University, Vilnius (A.J., D.R.), and the Department of Radiology, Medical Academy, Lithuanian University of Health Sciences Kauno Klinikos, Kaunas (D.V.) - both in Lithuania; the Department of Pediatrics, Nephrology, and Hypertension, Medical University of Gdansk, Gdansk (A.Z., A.K.), the Department of Pediatrics and Nephrology, Medical University of Warsaw, Warsaw (G.K., A.S.), the Department of Pediatric Nephrology and Hypertension, Chair of Pediatrics, Pediatric Institute, Jagiellonian University Medical College, Krakow (D.D.), the Department of Pediatrics, Faculty of Medical Sciences in Zabrze, Medical University of Silesia in Katowice, Katowice (M.S.), the Department of Pediatrics and Nephrology, Medical University of Bialystok, Bialystok (K.T.-J.), and the Department of Pediatrics, Immunology, and Nephrology, Polish Mother's Memorial Hospital Research Institute, Lodz (M.T.) - all in Poland; the Department of Pediatric Nephrology, University Hospitals Leuven (D.M., S.D.R.), and PKD Research Group, Laboratory of Ion Channel Research, Department of Cellular and Molecular Medicine, KU Leuven (D.M.), Leuven, and the Division of Nephrology, Department of Pediatrics, University Hospital Center of Liège, Liège (J.L.) - all in Belgium; the Department of Pediatric Nephrology, University Hospital Vall d'Hebron, and Universidad Autónoma de Barcelona, Hospital Vall d'Hebron (G.A.), and Pediatric Nephrology, Hospital General de Granollers, Universitat Internacional de Catalunya (M.C.), Barcelona, and Hospital General Universitario Santa Lucía, Cartagena (J.E.C.S.) - all in Spain; the University of Cologne, Faculty of Medicine and University Hospital Cologne, Children's and Adolescents' Hospital, Cologne (L.T.W.), and the Division of Pediatric Nephrology, Center for Pediatrics and Adolescent Medicine, Heidelberg University Hospital, Heidelberg (O.M., F.S.) - both in Germany; and the Division of Pediatric Nephrology, Centro Materno Infantil do Norte, Centro Hospitalar Universitário do Porto, Porto, Portugal (A.C.A.).; Puccio G; From the Pediatric Nephrology, Dialysis, and Transplant Unit (W.M., G.P., J.S., G.M.) and the Pediatric Urology Unit (D.G.M.), Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico, and the Department of Clinical Sciences and Community Health, University of Milan (G.M.), Milan, the Department of General and Specialized Surgery for Women and Children, Università degli Studi della Campania 'Luigi Vanvitelli,' Naples (A.L.M., S.G., P.M.), the Institute for Maternal and Child Health-IRCCS Burlo Garofolo (M.P., E. Barbi) and the Department of Medical, Surgical, and Health Sciences, University of Trieste (E. Barbi), Trieste, Pediatric Nephrology and Dialysis, Pediatric Unit, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna (C.L.S., A.P.), the Nephrology and Dialysis Unit, Meyer Children's Hospital, Florence (F.B., M.M.), Pediatria C, Ospedale Donna Bambino, Verona (M.B.), the Pediatric Nephrology and Rheumatology Unit, Azienda Ospedaliera Universitaria Gaetano Martino, University of Messina, Messina (R.C.), the Nuclear Medicine Unit, Circolo Hospital and Macchi Foundation, Azienda Socio Sanitaria Territoriale Sette Laghi, Varese (D.D.P.), the Nuclear Medicine Unit, Department of Medicine, University Hospital of Padua (P.Z.), and the Pediatric Nephrology, Dialysis, and Transplantation Unit, Department of Women's and Children's Health, University of Padua (I.A.), Padua - all in Italy; the Department of Pediatric Nephrology, Başkent University Faculty of Medicine (E. Baskin, K.G.), and the Department of Pediatric Nephrology, Ankara University School of Medicine (F.Y., Z.B.O.), Ankara, the Department of Pediatric Nephrology and Pediatric Rheumatology, Pamukkale University School of Medicine, Denizli (S.Y.), and the Department of Pediatric Nephrology, Istanbul University-Cerrahpaşa, Cerrahpaşa School of Medicine, Istanbul (S.C.) - all in Turkey; the Pediatric Center, Institute of Clinical Medicine, Faculty of Medicine, Vilnius University, Vilnius (A.J., D.R.), and the Department of Radiology, Medical Academy, Lithuanian University of Health Sciences Kauno Klinikos, Kaunas (D.V.) - both in Lithuania; the Department of Pediatrics, Nephrology, and Hypertension, Medical University of Gdansk, Gdansk (A.Z., A.K.), the Department of Pediatrics and Nephrology, Medical University of Warsaw, Warsaw (G.K., A.S.), the Department of Pediatric Nephrology and Hypertension, Chair of Pediatrics, Pediatric Institute, Jagiellonian University Medical College, Krakow (D.D.), the Department of Pediatrics, Faculty of Medical Sciences in Zabrze, Medical University of Silesia in Katowice, Katowice (M.S.), the Department of Pediatrics and Nephrology, Medical University of Bialystok, Bialystok (K.T.-J.), and the Department of Pediatrics, Immunology, and Nephrology, Polish Mother's Memorial Hospital Research Institute, Lodz (M.T.) - all in Poland; the Department of Pediatric Nephrology, University Hospitals Leuven (D.M., S.D.R.), and PKD Research Group, Laboratory of Ion Channel Research, Department of Cellular and Molecular Medicine, KU Leuven (D.M.), Leuven, and the Division of Nephrology, Department of Pediatrics, University Hospital Center of Liège, Liège (J.L.) - all in Belgium; the Department of Pediatric Nephrology, University Hospital Vall d'Hebron, and Universidad Autónoma de Barcelona, Hospital Vall d'Hebron (G.A.), and Pediatric Nephrology, Hospital General de Granollers, Universitat Internacional de Catalunya (M.C.), Barcelona, and Hospital General Universitario Santa Lucía, Cartagena (J.E.C.S.) - all in Spain; the University of Cologne, Faculty of Medicine and University Hospital Cologne, Children's and Adolescents' Hospital, Cologne (L.T.W.), and the Division of Pediatric Nephrology, Center for Pediatrics and Adolescent Medicine, Heidelberg University Hospital, Heidelberg (O.M., F.S.) - both in Germany; and the Division of Pediatric Nephrology, Centro Materno Infantil do Norte, Centro Hospitalar Universitário do Porto, Porto, Portugal (A.C.A.).; Serafinelli J; From the Pediatric Nephrology, Dialysis, and Transplant Unit (W.M., G.P., J.S., G.M.) and the Pediatric Urology Unit (D.G.M.), Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico, and the Department of Clinical Sciences and Community Health, University of Milan (G.M.), Milan, the Department of General and Specialized Surgery for Women and Children, Università degli Studi della Campania 'Luigi Vanvitelli,' Naples (A.L.M., S.G., P.M.), the Institute for Maternal and Child Health-IRCCS Burlo Garofolo (M.P., E. Barbi) and the Department of Medical, Surgical, and Health Sciences, University of Trieste (E. Barbi), Trieste, Pediatric Nephrology and Dialysis, Pediatric Unit, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna (C.L.S., A.P.), the Nephrology and Dialysis Unit, Meyer Children's Hospital, Florence (F.B., M.M.), Pediatria C, Ospedale Donna Bambino, Verona (M.B.), the Pediatric Nephrology and Rheumatology Unit, Azienda Ospedaliera Universitaria Gaetano Martino, University of Messina, Messina (R.C.), the Nuclear Medicine Unit, Circolo Hospital and Macchi Foundation, Azienda Socio Sanitaria Territoriale Sette Laghi, Varese (D.D.P.), the Nuclear Medicine Unit, Department of Medicine, University Hospital of Padua (P.Z.), and the Pediatric Nephrology, Dialysis, and Transplantation Unit, Department of Women's and Children's Health, University of Padua (I.A.), Padua - all in Italy; the Department of Pediatric Nephrology, Başkent University Faculty of Medicine (E. Baskin, K.G.), and the Department of Pediatric Nephrology, Ankara University School of Medicine (F.Y., Z.B.O.), Ankara, the Department of Pediatric Nephrology and Pediatric Rheumatology, Pamukkale University School of Medicine, Denizli (S.Y.), and the Department of Pediatric Nephrology, Istanbul University-Cerrahpaşa, Cerrahpaşa School of Medicine, Istanbul (S.C.) - all in Turkey; the Pediatric Center, Institute of Clinical Medicine, Faculty of Medicine, Vilnius University, Vilnius (A.J., D.R.), and the Department of Radiology, Medical Academy, Lithuanian University of Health Sciences Kauno Klinikos, Kaunas (D.V.) - both in Lithuania; the Department of Pediatrics, Nephrology, and Hypertension, Medical University of Gdansk, Gdansk (A.Z., A.K.), the Department of Pediatrics and Nephrology, Medical University of Warsaw, Warsaw (G.K., A.S.), the Department of Pediatric Nephrology and Hypertension, Chair of Pediatrics, Pediatric Institute, Jagiellonian University Medical College, Krakow (D.D.), the Department of Pediatrics, Faculty of Medical Sciences in Zabrze, Medical University of Silesia in Katowice, Katowice (M.S.), the Department of Pediatrics and Nephrology, Medical University of Bialystok, Bialystok (K.T.-J.), and the Department of Pediatrics, Immunology, and Nephrology, Polish Mother's Memorial Hospital Research Institute, Lodz (M.T.) - all in Poland; the Department of Pediatric Nephrology, University Hospitals Leuven (D.M., S.D.R.), and PKD Research Group, Laboratory of Ion Channel Research, Department of Cellular and Molecular Medicine, KU Leuven (D.M.), Leuven, and the Division of Nephrology, Department of Pediatrics, University Hospital Center of Liège, Liège (J.L.) - all in Belgium; the Department of Pediatric Nephrology, University Hospital Vall d'Hebron, and Universidad Autónoma de Barcelona, Hospital Vall d'Hebron (G.A.), and Pediatric Nephrology, Hospital General de Granollers, Universitat Internacional de Catalunya (M.C.), Barcelona, and Hospital General Universitario Santa Lucía, Cartagena (J.E.C.S.) - all in Spain; the University of Cologne, Faculty of Medicine and University Hospital Cologne, Children's and Adolescents' Hospital, Cologne (L.T.W.), and the Division of Pediatric Nephrology, Center for Pediatrics and Adolescent Medicine, Heidelberg University Hospital, Heidelberg (O.M., F.S.) - both in Germany; and the Division of Pediatric Nephrology, Centro Materno Infantil do Norte, Centro Hospitalar Universitário do Porto, Porto, Portugal (A.C.A.).; La Manna A; From the Pediatric Nephrology, Dialysis, and Transplant Unit (W.M., G.P., J.S., G.M.) and the Pediatric Urology Unit (D.G.M.), Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico, and the Department of Clinical Sciences and Community Health, University of Milan (G.M.), Milan, the Department of General and Specialized Surgery for Women and Children, Università degli Studi della Campania 'Luigi Vanvitelli,' Naples (A.L.M., S.G., P.M.), the Institute for Maternal and Child Health-IRCCS Burlo Garofolo (M.P., E. Barbi) and the Department of Medical, Surgical, and Health Sciences, University of Trieste (E. Barbi), Trieste, Pediatric Nephrology and Dialysis, Pediatric Unit, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna (C.L.S., A.P.), the Nephrology and Dialysis Unit, Meyer Children's Hospital, Florence (F.B., M.M.), Pediatria C, Ospedale Donna Bambino, Verona (M.B.), the Pediatric Nephrology and Rheumatology Unit, Azienda Ospedaliera Universitaria Gaetano Martino, University of Messina, Messina (R.C.), the Nuclear Medicine Unit, Circolo Hospital and Macchi Foundation, Azienda Socio Sanitaria Territoriale Sette Laghi, Varese (D.D.P.), the Nuclear Medicine Unit, Department of Medicine, University Hospital of Padua (P.Z.), and the Pediatric Nephrology, Dialysis, and Transplantation Unit, Department of Women's and Children's Health, University of Padua (I.A.), Padua - all in Italy; the Department of Pediatric Nephrology, Başkent University Faculty of Medicine (E. Baskin, K.G.), and the Department of Pediatric Nephrology, Ankara University School of Medicine (F.Y., Z.B.O.), Ankara, the Department of Pediatric Nephrology and Pediatric Rheumatology, Pamukkale University School of Medicine, Denizli (S.Y.), and the Department of Pediatric Nephrology, Istanbul University-Cerrahpaşa, Cerrahpaşa School of Medicine, Istanbul (S.C.) - all in Turkey; the Pediatric Center, Institute of Clinical Medicine, Faculty of Medicine, Vilnius University, Vilnius (A.J., D.R.), and the Department of Radiology, Medical Academy, Lithuanian University of Health Sciences Kauno Klinikos, Kaunas (D.V.) - both in Lithuania; the Department of Pediatrics, Nephrology, and Hypertension, Medical University of Gdansk, Gdansk (A.Z., A.K.), the Department of Pediatrics and Nephrology, Medical University of Warsaw, Warsaw (G.K., A.S.), the Department of Pediatric Nephrology and Hypertension, Chair of Pediatrics, Pediatric Institute, Jagiellonian University Medical College, Krakow (D.D.), the Department of Pediatrics, Faculty of Medical Sciences in Zabrze, Medical University of Silesia in Katowice, Katowice (M.S.), the Department of Pediatrics and Nephrology, Medical University of Bialystok, Bialystok (K.T.-J.), and the Department of Pediatrics, Immunology, and Nephrology, Polish Mother's Memorial Hospital Research Institute, Lodz (M.T.) - all in Poland; the Department of Pediatric Nephrology, University Hospitals Leuven (D.M., S.D.R.), and PKD Research Group, Laboratory of Ion Channel Research, Department of Cellular and Molecular Medicine, KU Leuven (D.M.), Leuven, and the Division of Nephrology, Department of Pediatrics, University Hospital Center of Liège, Liège (J.L.) - all in Belgium; the Department of Pediatric Nephrology, University Hospital Vall d'Hebron, and Universidad Autónoma de Barcelona, Hospital Vall d'Hebron (G.A.), and Pediatric Nephrology, Hospital General de Granollers, Universitat Internacional de Catalunya (M.C.), Barcelona, and Hospital General Universitario Santa Lucía, Cartagena (J.E.C.S.) - all in Spain; the University of Cologne, Faculty of Medicine and University Hospital Cologne, Children's and Adolescents' Hospital, Cologne (L.T.W.), and the Division of Pediatric Nephrology, Center for Pediatrics and Adolescent Medicine, Heidelberg University Hospital, Heidelberg (O.M., F.S.) - both in Germany; and the Division of Pediatric Nephrology, Centro Materno Infantil do Norte, Centro Hospitalar Universitário do Porto, Porto, Portugal (A.C.A.).; Krzemień G; From the Pediatric Nephrology, Dialysis, and Transplant Unit (W.M., G.P., J.S., G.M.) and the Pediatric Urology Unit (D.G.M.), Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico, and the Department of Clinical Sciences and Community Health, University of Milan (G.M.), Milan, the Department of General and Specialized Surgery for Women and Children, Università degli Studi della Campania 'Luigi Vanvitelli,' Naples (A.L.M., S.G., P.M.), the Institute for Maternal and Child Health-IRCCS Burlo Garofolo (M.P., E. Barbi) and the Department of Medical, Surgical, and Health Sciences, University of Trieste (E. Barbi), Trieste, Pediatric Nephrology and Dialysis, Pediatric Unit, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna (C.L.S., A.P.), the Nephrology and Dialysis Unit, Meyer Children's Hospital, Florence (F.B., M.M.), Pediatria C, Ospedale Donna Bambino, Verona (M.B.), the Pediatric Nephrology and Rheumatology Unit, Azienda Ospedaliera Universitaria Gaetano Martino, University of Messina, Messina (R.C.), the Nuclear Medicine Unit, Circolo Hospital and Macchi Foundation, Azienda Socio Sanitaria Territoriale Sette Laghi, Varese (D.D.P.), the Nuclear Medicine Unit, Department of Medicine, University Hospital of Padua (P.Z.), and the Pediatric Nephrology, Dialysis, and Transplantation Unit, Department of Women's and Children's Health, University of Padua (I.A.), Padua - all in Italy; the Department of Pediatric Nephrology, Başkent University Faculty of Medicine (E. Baskin, K.G.), and the Department of Pediatric Nephrology, Ankara University School of Medicine (F.Y., Z.B.O.), Ankara, the Department of Pediatric Nephrology and Pediatric Rheumatology, Pamukkale University School of Medicine, Denizli (S.Y.), and the Department of Pediatric Nephrology, Istanbul University-Cerrahpaşa, Cerrahpaşa School of Medicine, Istanbul (S.C.) - all in Turkey; the Pediatric Center, Institute of Clinical Medicine, Faculty of Medicine, Vilnius University, Vilnius (A.J., D.R.), and the Department of Radiology, Medical Academy, Lithuanian University of Health Sciences Kauno Klinikos, Kaunas (D.V.) - both in Lithuania; the Department of Pediatrics, Nephrology, and Hypertension, Medical University of Gdansk, Gdansk (A.Z., A.K.), the Department of Pediatrics and Nephrology, Medical University of Warsaw, Warsaw (G.K., A.S.), the Department of Pediatric Nephrology and Hypertension, Chair of Pediatrics, Pediatric Institute, Jagiellonian University Medical College, Krakow (D.D.), the Department of Pediatrics, Faculty of Medical Sciences in Zabrze, Medical University of Silesia in Katowice, Katowice (M.S.), the Department of Pediatrics and Nephrology, Medical University of Bialystok, Bialystok (K.T.-J.), and the Department of Pediatrics, Immunology, and Nephrology, Polish Mother's Memorial Hospital Research Institute, Lodz (M.T.) - all in Poland; the Department of Pediatric Nephrology, University Hospitals Leuven (D.M., S.D.R.), and PKD Research Group, Laboratory of Ion Channel Research, Department of Cellular and Molecular Medicine, KU Leuven (D.M.), Leuven, and the Division of Nephrology, Department of Pediatrics, University Hospital Center of Liège, Liège (J.L.) - all in Belgium; the Department of Pediatric Nephrology, University Hospital Vall d'Hebron, and Universidad Autónoma de Barcelona, Hospital Vall d'Hebron (G.A.), and Pediatric Nephrology, Hospital General de Granollers, Universitat Internacional de Catalunya (M.C.), Barcelona, and Hospital General Universitario Santa Lucía, Cartagena (J.E.C.S.) - all in Spain; the University of Cologne, Faculty of Medicine and University Hospital Cologne, Children's and Adolescents' Hospital, Cologne (L.T.W.), and the Division of Pediatric Nephrology, Center for Pediatrics and Adolescent Medicine, Heidelberg University Hospital, Heidelberg (O.M., F.S.) - both in Germany; and the Division of Pediatric Nephrology, Centro Materno Infantil do Norte, Centro Hospitalar Universitário do Porto, Porto, Portugal (A.C.A.).; Pennesi M; From the Pediatric Nephrology, Dialysis, and Transplant Unit (W.M., G.P., J.S., G.M.) and the Pediatric Urology Unit (D.G.M.), Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico, and the Department of Clinical Sciences and Community Health, University of Milan (G.M.), Milan, the Department of General and Specialized Surgery for Women and Children, Università degli Studi della Campania 'Luigi Vanvitelli,' Naples (A.L.M., S.G., P.M.), the Institute for Maternal and Child Health-IRCCS Burlo Garofolo (M.P., E. Barbi) and the Department of Medical, Surgical, and Health Sciences, University of Trieste (E. Barbi), Trieste, Pediatric Nephrology and Dialysis, Pediatric Unit, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna (C.L.S., A.P.), the Nephrology and Dialysis Unit, Meyer Children's Hospital, Florence (F.B., M.M.), Pediatria C, Ospedale Donna Bambino, Verona (M.B.), the Pediatric Nephrology and Rheumatology Unit, Azienda Ospedaliera Universitaria Gaetano Martino, University of Messina, Messina (R.C.), the Nuclear Medicine Unit, Circolo Hospital and Macchi Foundation, Azienda Socio Sanitaria Territoriale Sette Laghi, Varese (D.D.P.), the Nuclear Medicine Unit, Department of Medicine, University Hospital of Padua (P.Z.), and the Pediatric Nephrology, Dialysis, and Transplantation Unit, Department of Women's and Children's Health, University of Padua (I.A.), Padua - all in Italy; the Department of Pediatric Nephrology, Başkent University Faculty of Medicine (E. Baskin, K.G.), and the Department of Pediatric Nephrology, Ankara University School of Medicine (F.Y., Z.B.O.), Ankara, the Department of Pediatric Nephrology and Pediatric Rheumatology, Pamukkale University School of Medicine, Denizli (S.Y.), and the Department of Pediatric Nephrology, Istanbul University-Cerrahpaşa, Cerrahpaşa School of Medicine, Istanbul (S.C.) - all in Turkey; the Pediatric Center, Institute of Clinical Medicine, Faculty of Medicine, Vilnius University, Vilnius (A.J., D.R.), and the Department of Radiology, Medical Academy, Lithuanian University of Health Sciences Kauno Klinikos, Kaunas (D.V.) - both in Lithuania; the Department of Pediatrics, Nephrology, and Hypertension, Medical University of Gdansk, Gdansk (A.Z., A.K.), the Department of Pediatrics and Nephrology, Medical University of Warsaw, Warsaw (G.K., A.S.), the Department of Pediatric Nephrology and Hypertension, Chair of Pediatrics, Pediatric Institute, Jagiellonian University Medical College, Krakow (D.D.), the Department of Pediatrics, Faculty of Medical Sciences in Zabrze, Medical University of Silesia in Katowice, Katowice (M.S.), the Department of Pediatrics and Nephrology, Medical University of Bialystok, Bialystok (K.T.-J.), and the Department of Pediatrics, Immunology, and Nephrology, Polish Mother's Memorial Hospital Research Institute, Lodz (M.T.) - all in Poland; the Department of Pediatric Nephrology, University Hospitals Leuven (D.M., S.D.R.), and PKD Research Group, Laboratory of Ion Channel Research, Department of Cellular and Molecular Medicine, KU Leuven (D.M.), Leuven, and the Division of Nephrology, Department of Pediatrics, University Hospital Center of Liège, Liège (J.L.) - all in Belgium; the Department of Pediatric Nephrology, University Hospital Vall d'Hebron, and Universidad Autónoma de Barcelona, Hospital Vall d'Hebron (G.A.), and Pediatric Nephrology, Hospital General de Granollers, Universitat Internacional de Catalunya (M.C.), Barcelona, and Hospital General Universitario Santa Lucía, Cartagena (J.E.C.S.) - all in Spain; the University of Cologne, Faculty of Medicine and University Hospital Cologne, Children's and Adolescents' Hospital, Cologne (L.T.W.), and the Division of Pediatric Nephrology, Center for Pediatrics and Adolescent Medicine, Heidelberg University Hospital, Heidelberg (O.M., F.S.) - both in Germany; and the Division of Pediatric Nephrology, Centro Materno Infantil do Norte, Centro Hospitalar Universitário do Porto, Porto, Portugal (A.C.A.).; La Scola C; From the Pediatric Nephrology, Dialysis, and Transplant Unit (W.M., G.P., J.S., G.M.) and the Pediatric Urology Unit (D.G.M.), Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico, and the Department of Clinical Sciences and Community Health, University of Milan (G.M.), Milan, the Department of General and Specialized Surgery for Women and Children, Università degli Studi della Campania 'Luigi Vanvitelli,' Naples (A.L.M., S.G., P.M.), the Institute for Maternal and Child Health-IRCCS Burlo Garofolo (M.P., E. Barbi) and the Department of Medical, Surgical, and Health Sciences, University of Trieste (E. Barbi), Trieste, Pediatric Nephrology and Dialysis, Pediatric Unit, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna (C.L.S., A.P.), the Nephrology and Dialysis Unit, Meyer Children's Hospital, Florence (F.B., M.M.), Pediatria C, Ospedale Donna Bambino, Verona (M.B.), the Pediatric Nephrology and Rheumatology Unit, Azienda Ospedaliera Universitaria Gaetano Martino, University of Messina, Messina (R.C.), the Nuclear Medicine Unit, Circolo Hospital and Macchi Foundation, Azienda Socio Sanitaria Territoriale Sette Laghi, Varese (D.D.P.), the Nuclear Medicine Unit, Department of Medicine, University Hospital of Padua (P.Z.), and the Pediatric Nephrology, Dialysis, and Transplantation Unit, Department of Women's and Children's Health, University of Padua (I.A.), Padua - all in Italy; the Department of Pediatric Nephrology, Başkent University Faculty of Medicine (E. Baskin, K.G.), and the Department of Pediatric Nephrology, Ankara University School of Medicine (F.Y., Z.B.O.), Ankara, the Department of Pediatric Nephrology and Pediatric Rheumatology, Pamukkale University School of Medicine, Denizli (S.Y.), and the Department of Pediatric Nephrology, Istanbul University-Cerrahpaşa, Cerrahpaşa School of Medicine, Istanbul (S.C.) - all in Turkey; the Pediatric Center, Institute of Clinical Medicine, Faculty of Medicine, Vilnius University, Vilnius (A.J., D.R.), and the Department of Radiology, Medical Academy, Lithuanian University of Health Sciences Kauno Klinikos, Kaunas (D.V.) - both in Lithuania; the Department of Pediatrics, Nephrology, and Hypertension, Medical University of Gdansk, Gdansk (A.Z., A.K.), the Department of Pediatrics and Nephrology, Medical University of Warsaw, Warsaw (G.K., A.S.), the Department of Pediatric Nephrology and Hypertension, Chair of Pediatrics, Pediatric Institute, Jagiellonian University Medical College, Krakow (D.D.), the Department of Pediatrics, Faculty of Medical Sciences in Zabrze, Medical University of Silesia in Katowice, Katowice (M.S.), the Department of Pediatrics and Nephrology, Medical University of Bialystok, Bialystok (K.T.-J.), and the Department of Pediatrics, Immunology, and Nephrology, Polish Mother's Memorial Hospital Research Institute, Lodz (M.T.) - all in Poland; the Department of Pediatric Nephrology, University Hospitals Leuven (D.M., S.D.R.), and PKD Research Group, Laboratory of Ion Channel Research, Department of Cellular and Molecular Medicine, KU Leuven (D.M.), Leuven, and the Division of Nephrology, Department of Pediatrics, University Hospital Center of Liège, Liège (J.L.) - all in Belgium; the Department of Pediatric Nephrology, University Hospital Vall d'Hebron, and Universidad Autónoma de Barcelona, Hospital Vall d'Hebron (G.A.), and Pediatric Nephrology, Hospital General de Granollers, Universitat Internacional de Catalunya (M.C.), Barcelona, and Hospital General Universitario Santa Lucía, Cartagena (J.E.C.S.) - all in Spain; the University of Cologne, Faculty of Medicine and University Hospital Cologne, Children's and Adolescents' Hospital, Cologne (L.T.W.), and the Division of Pediatric Nephrology, Center for Pediatrics and Adolescent Medicine, Heidelberg University Hospital, Heidelberg (O.M., F.S.) - both in Germany; and the Division of Pediatric Nephrology, Centro Materno Infantil do Norte, Centro Hospitalar Universitário do Porto, Porto, Portugal (A.C.A.).; Becherucci F; From the Pediatric Nephrology, Dialysis, and Transplant Unit (W.M., G.P., J.S., G.M.) and the Pediatric Urology Unit (D.G.M.), Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico, and the Department of Clinical Sciences and Community Health, University of Milan (G.M.), Milan, the Department of General and Specialized Surgery for Women and Children, Università degli Studi della Campania 'Luigi Vanvitelli,' Naples (A.L.M., S.G., P.M.), the Institute for Maternal and Child Health-IRCCS Burlo Garofolo (M.P., E. Barbi) and the Department of Medical, Surgical, and Health Sciences, University of Trieste (E. Barbi), Trieste, Pediatric Nephrology and Dialysis, Pediatric Unit, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna (C.L.S., A.P.), the Nephrology and Dialysis Unit, Meyer Children's Hospital, Florence (F.B., M.M.), Pediatria C, Ospedale Donna Bambino, Verona (M.B.), the Pediatric Nephrology and Rheumatology Unit, Azienda Ospedaliera Universitaria Gaetano Martino, University of Messina, Messina (R.C.), the Nuclear Medicine Unit, Circolo Hospital and Macchi Foundation, Azienda Socio Sanitaria Territoriale Sette Laghi, Varese (D.D.P.), the Nuclear Medicine Unit, Department of Medicine, University Hospital of Padua (P.Z.), and the Pediatric Nephrology, Dialysis, and Transplantation Unit, Department of Women's and Children's Health, University of Padua (I.A.), Padua - all in Italy; the Department of Pediatric Nephrology, Başkent University Faculty of Medicine (E. Baskin, K.G.), and the Department of Pediatric Nephrology, Ankara University School of Medicine (F.Y., Z.B.O.), Ankara, the Department of Pediatric Nephrology and Pediatric Rheumatology, Pamukkale University School of Medicine, Denizli (S.Y.), and the Department of Pediatric Nephrology, Istanbul University-Cerrahpaşa, Cerrahpaşa School of Medicine, Istanbul (S.C.) - all in Turkey; the Pediatric Center, Institute of Clinical Medicine, Faculty of Medicine, Vilnius University, Vilnius (A.J., D.R.), and the Department of Radiology, Medical Academy, Lithuanian University of Health Sciences Kauno Klinikos, Kaunas (D.V.) - both in Lithuania; the Department of Pediatrics, Nephrology, and Hypertension, Medical University of Gdansk, Gdansk (A.Z., A.K.), the Department of Pediatrics and Nephrology, Medical University of Warsaw, Warsaw (G.K., A.S.), the Department of Pediatric Nephrology and Hypertension, Chair of Pediatrics, Pediatric Institute, Jagiellonian University Medical College, Krakow (D.D.), the Department of Pediatrics, Faculty of Medical Sciences in Zabrze, Medical University of Silesia in Katowice, Katowice (M.S.), the Department of Pediatrics and Nephrology, Medical University of Bialystok, Bialystok (K.T.-J.), and the Department of Pediatrics, Immunology, and Nephrology, Polish Mother's Memorial Hospital Research Institute, Lodz (M.T.) - all in Poland; the Department of Pediatric Nephrology, University Hospitals Leuven (D.M., S.D.R.), and PKD Research Group, Laboratory of Ion Channel Research, Department of Cellular and Molecular Medicine, KU Leuven (D.M.), Leuven, and the Division of Nephrology, Department of Pediatrics, University Hospital Center of Liège, Liège (J.L.) - all in Belgium; the Department of Pediatric Nephrology, University Hospital Vall d'Hebron, and Universidad Autónoma de Barcelona, Hospital Vall d'Hebron (G.A.), and Pediatric Nephrology, Hospital General de Granollers, Universitat Internacional de Catalunya (M.C.), Barcelona, and Hospital General Universitario Santa Lucía, Cartagena (J.E.C.S.) - all in Spain; the University of Cologne, Faculty of Medicine and University Hospital Cologne, Children's and Adolescents' Hospital, Cologne (L.T.W.), and the Division of Pediatric Nephrology, Center for Pediatrics and Adolescent Medicine, Heidelberg University Hospital, Heidelberg (O.M., F.S.) - both in Germany; and the Division of Pediatric Nephrology, Centro Materno Infantil do Norte, Centro Hospitalar Universitário do Porto, Porto, Portugal (A.C.A.).; Brugnara M; From the Pediatric Nephrology, Dialysis, and Transplant Unit (W.M., G.P., J.S., G.M.) and the Pediatric Urology Unit (D.G.M.), Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico, and the Department of Clinical Sciences and Community Health, University of Milan (G.M.), Milan, the Department of General and Specialized Surgery for Women and Children, Università degli Studi della Campania 'Luigi Vanvitelli,' Naples (A.L.M., S.G., P.M.), the Institute for Maternal and Child Health-IRCCS Burlo Garofolo (M.P., E. Barbi) and the Department of Medical, Surgical, and Health Sciences, University of Trieste (E. Barbi), Trieste, Pediatric Nephrology and Dialysis, Pediatric Unit, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna (C.L.S., A.P.), the Nephrology and Dialysis Unit, Meyer Children's Hospital, Florence (F.B., M.M.), Pediatria C, Ospedale Donna Bambino, Verona (M.B.), the Pediatric Nephrology and Rheumatology Unit, Azienda Ospedaliera Universitaria Gaetano Martino, University of Messina, Messina (R.C.), the Nuclear Medicine Unit, Circolo Hospital and Macchi Foundation, Azienda Socio Sanitaria Territoriale Sette Laghi, Varese (D.D.P.), the Nuclear Medicine Unit, Department of Medicine, University Hospital of Padua (P.Z.), and the Pediatric Nephrology, Dialysis, and Transplantation Unit, Department of Women's and Children's Health, University of Padua (I.A.), Padua - all in Italy; the Department of Pediatric Nephrology, Başkent University Faculty of Medicine (E. Baskin, K.G.), and the Department of Pediatric Nephrology, Ankara University School of Medicine (F.Y., Z.B.O.), Ankara, the Department of Pediatric Nephrology and Pediatric Rheumatology, Pamukkale University School of Medicine, Denizli (S.Y.), and the Department of Pediatric Nephrology, Istanbul University-Cerrahpaşa, Cerrahpaşa School of Medicine, Istanbul (S.C.) - all in Turkey; the Pediatric Center, Institute of Clinical Medicine, Faculty of Medicine, Vilnius University, Vilnius (A.J., D.R.), and the Department of Radiology, Medical Academy, Lithuanian University of Health Sciences Kauno Klinikos, Kaunas (D.V.) - both in Lithuania; the Department of Pediatrics, Nephrology, and Hypertension, Medical University of Gdansk, Gdansk (A.Z., A.K.), the Department of Pediatrics and Nephrology, Medical University of Warsaw, Warsaw (G.K., A.S.), the Department of Pediatric Nephrology and Hypertension, Chair of Pediatrics, Pediatric Institute, Jagiellonian University Medical College, Krakow (D.D.), the Department of Pediatrics, Faculty of Medical Sciences in Zabrze, Medical University of Silesia in Katowice, Katowice (M.S.), the Department of Pediatrics and Nephrology, Medical University of Bialystok, Bialystok (K.T.-J.), and the Department of Pediatrics, Immunology, and Nephrology, Polish Mother's Memorial Hospital Research Institute, Lodz (M.T.) - all in Poland; the Department of Pediatric Nephrology, University Hospitals Leuven (D.M., S.D.R.), and PKD Research Group, Laboratory of Ion Channel Research, Department of Cellular and Molecular Medicine, KU Leuven (D.M.), Leuven, and the Division of Nephrology, Department of Pediatrics, University Hospital Center of Liège, Liège (J.L.) - all in Belgium; the Department of Pediatric Nephrology, University Hospital Vall d'Hebron, and Universidad Autónoma de Barcelona, Hospital Vall d'Hebron (G.A.), and Pediatric Nephrology, Hospital General de Granollers, Universitat Internacional de Catalunya (M.C.), Barcelona, and Hospital General Universitario Santa Lucía, Cartagena (J.E.C.S.) - all in Spain; the University of Cologne, Faculty of Medicine and University Hospital Cologne, Children's and Adolescents' Hospital, Cologne (L.T.W.), and the Division of Pediatric Nephrology, Center for Pediatrics and Adolescent Medicine, Heidelberg University Hospital, Heidelberg (O.M., F.S.) - both in Germany; and the Division of Pediatric Nephrology, Centro Materno Infantil do Norte, Centro Hospitalar Universitário do Porto, Porto, Portugal (A.C.A.).; Yuksel S; From the Pediatric Nephrology, Dialysis, and Transplant Unit (W.M., G.P., J.S., G.M.) and the Pediatric Urology Unit (D.G.M.), Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico, and the Department of Clinical Sciences and Community Health, University of Milan (G.M.), Milan, the Department of General and Specialized Surgery for Women and Children, Università degli Studi della Campania 'Luigi Vanvitelli,' Naples (A.L.M., S.G., P.M.), the Institute for Maternal and Child Health-IRCCS Burlo Garofolo (M.P., E. Barbi) and the Department of Medical, Surgical, and Health Sciences, University of Trieste (E. Barbi), Trieste, Pediatric Nephrology and Dialysis, Pediatric Unit, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna (C.L.S., A.P.), the Nephrology and Dialysis Unit, Meyer Children's Hospital, Florence (F.B., M.M.), Pediatria C, Ospedale Donna Bambino, Verona (M.B.), the Pediatric Nephrology and Rheumatology Unit, Azienda Ospedaliera Universitaria Gaetano Martino, University of Messina, Messina (R.C.), the Nuclear Medicine Unit, Circolo Hospital and Macchi Foundation, Azienda Socio Sanitaria Territoriale Sette Laghi, Varese (D.D.P.), the Nuclear Medicine Unit, Department of Medicine, University Hospital of Padua (P.Z.), and the Pediatric Nephrology, Dialysis, and Transplantation Unit, Department of Women's and Children's Health, University of Padua (I.A.), Padua - all in Italy; the Department of Pediatric Nephrology, Başkent University Faculty of Medicine (E. Baskin, K.G.), and the Department of Pediatric Nephrology, Ankara University School of Medicine (F.Y., Z.B.O.), Ankara, the Department of Pediatric Nephrology and Pediatric Rheumatology, Pamukkale University School of Medicine, Denizli (S.Y.), and the Department of Pediatric Nephrology, Istanbul University-Cerrahpaşa, Cerrahpaşa School of Medicine, Istanbul (S.C.) - all in Turkey; the Pediatric Center, Institute of Clinical Medicine, Faculty of Medicine, Vilnius University, Vilnius (A.J., D.R.), and the Department of Radiology, Medical Academy, Lithuanian University of Health Sciences Kauno Klinikos, Kaunas (D.V.) - both in Lithuania; the Department of Pediatrics, Nephrology, and Hypertension, Medical University of Gdansk, Gdansk (A.Z., A.K.), the Department of Pediatrics and Nephrology, Medical University of Warsaw, Warsaw (G.K., A.S.), the Department of Pediatric Nephrology and Hypertension, Chair of Pediatrics, Pediatric Institute, Jagiellonian University Medical College, Krakow (D.D.), the Department of Pediatrics, Faculty of Medical Sciences in Zabrze, Medical University of Silesia in Katowice, Katowice (M.S.), the Department of Pediatrics and Nephrology, Medical University of Bialystok, Bialystok (K.T.-J.), and the Department of Pediatrics, Immunology, and Nephrology, Polish Mother's Memorial Hospital Research Institute, Lodz (M.T.) - all in Poland; the Department of Pediatric Nephrology, University Hospitals Leuven (D.M., S.D.R.), and PKD Research Group, Laboratory of Ion Channel Research, Department of Cellular and Molecular Medicine, KU Leuven (D.M.), Leuven, and the Division of Nephrology, Department of Pediatrics, University Hospital Center of Liège, Liège (J.L.) - all in Belgium; the Department of Pediatric Nephrology, University Hospital Vall d'Hebron, and Universidad Autónoma de Barcelona, Hospital Vall d'Hebron (G.A.), and Pediatric Nephrology, Hospital General de Granollers, Universitat Internacional de Catalunya (M.C.), Barcelona, and Hospital General Universitario Santa Lucía, Cartagena (J.E.C.S.) - all in Spain; the University of Cologne, Faculty of Medicine and University Hospital Cologne, Children's and Adolescents' Hospital, Cologne (L.T.W.), and the Division of Pediatric Nephrology, Center for Pediatrics and Adolescent Medicine, Heidelberg University Hospital, Heidelberg (O.M., F.S.) - both in Germany; and the Division of Pediatric Nephrology, Centro Materno Infantil do Norte, Centro Hospitalar Universitário do Porto, Porto, Portugal (A.C.A.).; Mekahli D; From the Pediatric Nephrology, Dialysis, and Transplant Unit (W.M., G.P., J.S., G.M.) and the Pediatric Urology Unit (D.G.M.), Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico, and the Department of Clinical Sciences and Community Health, University of Milan (G.M.), Milan, the Department of General and Specialized Surgery for Women and Children, Università degli Studi della Campania 'Luigi Vanvitelli,' Naples (A.L.M., S.G., P.M.), the Institute for Maternal and Child Health-IRCCS Burlo Garofolo (M.P., E. Barbi) and the Department of Medical, Surgical, and Health Sciences, University of Trieste (E. Barbi), Trieste, Pediatric Nephrology and Dialysis, Pediatric Unit, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna (C.L.S., A.P.), the Nephrology and Dialysis Unit, Meyer Children's Hospital, Florence (F.B., M.M.), Pediatria C, Ospedale Donna Bambino, Verona (M.B.), the Pediatric Nephrology and Rheumatology Unit, Azienda Ospedaliera Universitaria Gaetano Martino, University of Messina, Messina (R.C.), the Nuclear Medicine Unit, Circolo Hospital and Macchi Foundation, Azienda Socio Sanitaria Territoriale Sette Laghi, Varese (D.D.P.), the Nuclear Medicine Unit, Department of Medicine, University Hospital of Padua (P.Z.), and the Pediatric Nephrology, Dialysis, and Transplantation Unit, Department of Women's and Children's Health, University of Padua (I.A.), Padua - all in Italy; the Department of Pediatric Nephrology, Başkent University Faculty of Medicine (E. Baskin, K.G.), and the Department of Pediatric Nephrology, Ankara University School of Medicine (F.Y., Z.B.O.), Ankara, the Department of Pediatric Nephrology and Pediatric Rheumatology, Pamukkale University School of Medicine, Denizli (S.Y.), and the Department of Pediatric Nephrology, Istanbul University-Cerrahpaşa, Cerrahpaşa School of Medicine, Istanbul (S.C.) - all in Turkey; the Pediatric Center, Institute of Clinical Medicine, Faculty of Medicine, Vilnius University, Vilnius (A.J., D.R.), and the Department of Radiology, Medical Academy, Lithuanian University of Health Sciences Kauno Klinikos, Kaunas (D.V.) - both in Lithuania; the Department of Pediatrics, Nephrology, and Hypertension, Medical University of Gdansk, Gdansk (A.Z., A.K.), the Department of Pediatrics and Nephrology, Medical University of Warsaw, Warsaw (G.K., A.S.), the Department of Pediatric Nephrology and Hypertension, Chair of Pediatrics, Pediatric Institute, Jagiellonian University Medical College, Krakow (D.D.), the Department of Pediatrics, Faculty of Medical Sciences in Zabrze, Medical University of Silesia in Katowice, Katowice (M.S.), the Department of Pediatrics and Nephrology, Medical University of Bialystok, Bialystok (K.T.-J.), and the Department of Pediatrics, Immunology, and Nephrology, Polish Mother's Memorial Hospital Research Institute, Lodz (M.T.) - all in Poland; the Department of Pediatric Nephrology, University Hospitals Leuven (D.M., S.D.R.), and PKD Research Group, Laboratory of Ion Channel Research, Department of Cellular and Molecular Medicine, KU Leuven (D.M.), Leuven, and the Division of Nephrology, Department of Pediatrics, University Hospital Center of Liège, Liège (J.L.) - all in Belgium; the Department of Pediatric Nephrology, University Hospital Vall d'Hebron, and Universidad Autónoma de Barcelona, Hospital Vall d'Hebron (G.A.), and Pediatric Nephrology, Hospital General de Granollers, Universitat Internacional de Catalunya (M.C.), Barcelona, and Hospital General Universitario Santa Lucía, Cartagena (J.E.C.S.) - all in Spain; the University of Cologne, Faculty of Medicine and University Hospital Cologne, Children's and Adolescents' Hospital, Cologne (L.T.W.), and the Division of Pediatric Nephrology, Center for Pediatrics and Adolescent Medicine, Heidelberg University Hospital, Heidelberg (O.M., F.S.) - both in Germany; and the Division of Pediatric Nephrology, Centro Materno Infantil do Norte, Centro Hospitalar Universitário do Porto, Porto, Portugal (A.C.A.).; Chimenz R; From the Pediatric Nephrology, Dialysis, and Transplant Unit (W.M., G.P., J.S., G.M.) and the Pediatric Urology Unit (D.G.M.), Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico, and the Department of Clinical Sciences and Community Health, University of Milan (G.M.), Milan, the Department of General and Specialized Surgery for Women and Children, Università degli Studi della Campania 'Luigi Vanvitelli,' Naples (A.L.M., S.G., P.M.), the Institute for Maternal and Child Health-IRCCS Burlo Garofolo (M.P., E. Barbi) and the Department of Medical, Surgical, and Health Sciences, University of Trieste (E. Barbi), Trieste, Pediatric Nephrology and Dialysis, Pediatric Unit, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna (C.L.S., A.P.), the Nephrology and Dialysis Unit, Meyer Children's Hospital, Florence (F.B., M.M.), Pediatria C, Ospedale Donna Bambino, Verona (M.B.), the Pediatric Nephrology and Rheumatology Unit, Azienda Ospedaliera Universitaria Gaetano Martino, University of Messina, Messina (R.C.), the Nuclear Medicine Unit, Circolo Hospital and Macchi Foundation, Azienda Socio Sanitaria Territoriale Sette Laghi, Varese (D.D.P.), the Nuclear Medicine Unit, Department of Medicine, University Hospital of Padua (P.Z.), and the Pediatric Nephrology, Dialysis, and Transplantation Unit, Department of Women's and Children's Health, University of Padua (I.A.), Padua - all in Italy; the Department of Pediatric Nephrology, Başkent University Faculty of Medicine (E. Baskin, K.G.), and the Department of Pediatric Nephrology, Ankara University School of Medicine (F.Y., Z.B.O.), Ankara, the Department of Pediatric Nephrology and Pediatric Rheumatology, Pamukkale University School of Medicine, Denizli (S.Y.), and the Department of Pediatric Nephrology, Istanbul University-Cerrahpaşa, Cerrahpaşa School of Medicine, Istanbul (S.C.) - all in Turkey; the Pediatric Center, Institute of Clinical Medicine, Faculty of Medicine, Vilnius University, Vilnius (A.J., D.R.), and the Department of Radiology, Medical Academy, Lithuanian University of Health Sciences Kauno Klinikos, Kaunas (D.V.) - both in Lithuania; the Department of Pediatrics, Nephrology, and Hypertension, Medical University of Gdansk, Gdansk (A.Z., A.K.), the Department of Pediatrics and Nephrology, Medical University of Warsaw, Warsaw (G.K., A.S.), the Department of Pediatric Nephrology and Hypertension, Chair of Pediatrics, Pediatric Institute, Jagiellonian University Medical College, Krakow (D.D.), the Department of Pediatrics, Faculty of Medical Sciences in Zabrze, Medical University of Silesia in Katowice, Katowice (M.S.), the Department of Pediatrics and Nephrology, Medical University of Bialystok, Bialystok (K.T.-J.), and the Department of Pediatrics, Immunology, and Nephrology, Polish Mother's Memorial Hospital Research Institute, Lodz (M.T.) - all in Poland; the Department of Pediatric Nephrology, University Hospitals Leuven (D.M., S.D.R.), and PKD Research Group, Laboratory of Ion Channel Research, Department of Cellular and Molecular Medicine, KU Leuven (D.M.), Leuven, and the Division of Nephrology, Department of Pediatrics, University Hospital Center of Liège, Liège (J.L.) - all in Belgium; the Department of Pediatric Nephrology, University Hospital Vall d'Hebron, and Universidad Autónoma de Barcelona, Hospital Vall d'Hebron (G.A.), and Pediatric Nephrology, Hospital General de Granollers, Universitat Internacional de Catalunya (M.C.), Barcelona, and Hospital General Universitario Santa Lucía, Cartagena (J.E.C.S.) - all in Spain; the University of Cologne, Faculty of Medicine and University Hospital Cologne, Children's and Adolescents' Hospital, Cologne (L.T.W.), and the Division of Pediatric Nephrology, Center for Pediatrics and Adolescent Medicine, Heidelberg University Hospital, Heidelberg (O.M., F.S.) - both in Germany; and the Division of Pediatric Nephrology, Centro Materno Infantil do Norte, Centro Hospitalar Universitário do Porto, Porto, Portugal (A.C.A.).; De Palma D; From the Pediatric Nephrology, Dialysis, and Transplant Unit (W.M., G.P., J.S., G.M.) and the Pediatric Urology Unit (D.G.M.), Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico, and the Department of Clinical Sciences and Community Health, University of Milan (G.M.), Milan, the Department of General and Specialized Surgery for Women and Children, Università degli Studi della Campania 'Luigi Vanvitelli,' Naples (A.L.M., S.G., P.M.), the Institute for Maternal and Child Health-IRCCS Burlo Garofolo (M.P., E. Barbi) and the Department of Medical, Surgical, and Health Sciences, University of Trieste (E. Barbi), Trieste, Pediatric Nephrology and Dialysis, Pediatric Unit, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna (C.L.S., A.P.), the Nephrology and Dialysis Unit, Meyer Children's Hospital, Florence (F.B., M.M.), Pediatria C, Ospedale Donna Bambino, Verona (M.B.), the Pediatric Nephrology and Rheumatology Unit, Azienda Ospedaliera Universitaria Gaetano Martino, University of Messina, Messina (R.C.), the Nuclear Medicine Unit, Circolo Hospital and Macchi Foundation, Azienda Socio Sanitaria Territoriale Sette Laghi, Varese (D.D.P.), the Nuclear Medicine Unit, Department of Medicine, University Hospital of Padua (P.Z.), and the Pediatric Nephrology, Dialysis, and Transplantation Unit, Department of Women's and Children's Health, University of Padua (I.A.), Padua - all in Italy; the Department of Pediatric Nephrology, Başkent University Faculty of Medicine (E. Baskin, K.G.), and the Department of Pediatric Nephrology, Ankara University School of Medicine (F.Y., Z.B.O.), Ankara, the Department of Pediatric Nephrology and Pediatric Rheumatology, Pamukkale University School of Medicine, Denizli (S.Y.), and the Department of Pediatric Nephrology, Istanbul University-Cerrahpaşa, Cerrahpaşa School of Medicine, Istanbul (S.C.) - all in Turkey; the Pediatric Center, Institute of Clinical Medicine, Faculty of Medicine, Vilnius University, Vilnius (A.J., D.R.), and the Department of Radiology, Medical Academy, Lithuanian University of Health Sciences Kauno Klinikos, Kaunas (D.V.) - both in Lithuania; the Department of Pediatrics, Nephrology, and Hypertension, Medical University of Gdansk, Gdansk (A.Z., A.K.), the Department of Pediatrics and Nephrology, Medical University of Warsaw, Warsaw (G.K., A.S.), the Department of Pediatric Nephrology and Hypertension, Chair of Pediatrics, Pediatric Institute, Jagiellonian University Medical College, Krakow (D.D.), the Department of Pediatrics, Faculty of Medical Sciences in Zabrze, Medical University of Silesia in Katowice, Katowice (M.S.), the Department of Pediatrics and Nephrology, Medical University of Bialystok, Bialystok (K.T.-J.), and the Department of Pediatrics, Immunology, and Nephrology, Polish Mother's Memorial Hospital Research Institute, Lodz (M.T.) - all in Poland; the Department of Pediatric Nephrology, University Hospitals Leuven (D.M., S.D.R.), and PKD Research Group, Laboratory of Ion Channel Research, Department of Cellular and Molecular Medicine, KU Leuven (D.M.), Leuven, and the Division of Nephrology, Department of Pediatrics, University Hospital Center of Liège, Liège (J.L.) - all in Belgium; the Department of Pediatric Nephrology, University Hospital Vall d'Hebron, and Universidad Autónoma de Barcelona, Hospital Vall d'Hebron (G.A.), and Pediatric Nephrology, Hospital General de Granollers, Universitat Internacional de Catalunya (M.C.), Barcelona, and Hospital General Universitario Santa Lucía, Cartagena (J.E.C.S.) - all in Spain; the University of Cologne, Faculty of Medicine and University Hospital Cologne, Children's and Adolescents' Hospital, Cologne (L.T.W.), and the Division of Pediatric Nephrology, Center for Pediatrics and Adolescent Medicine, Heidelberg University Hospital, Heidelberg (O.M., F.S.) - both in Germany; and the Division of Pediatric Nephrology, Centro Materno Infantil do Norte, Centro Hospitalar Universitário do Porto, Porto, Portugal (A.C.A.).; Zucchetta P; From the Pediatric Nephrology, Dialysis, and Transplant Unit (W.M., G.P., J.S., G.M.) and the Pediatric Urology Unit (D.G.M.), Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico, and the Department of Clinical Sciences and Community Health, University of Milan (G.M.), Milan, the Department of General and Specialized Surgery for Women and Children, Università degli Studi della Campania 'Luigi Vanvitelli,' Naples (A.L.M., S.G., P.M.), the Institute for Maternal and Child Health-IRCCS Burlo Garofolo (M.P., E. Barbi) and the Department of Medical, Surgical, and Health Sciences, University of Trieste (E. Barbi), Trieste, Pediatric Nephrology and Dialysis, Pediatric Unit, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna (C.L.S., A.P.), the Nephrology and Dialysis Unit, Meyer Children's Hospital, Florence (F.B., M.M.), Pediatria C, Ospedale Donna Bambino, Verona (M.B.), the Pediatric Nephrology and Rheumatology Unit, Azienda Ospedaliera Universitaria Gaetano Martino, University of Messina, Messina (R.C.), the Nuclear Medicine Unit, Circolo Hospital and Macchi Foundation, Azienda Socio Sanitaria Territoriale Sette Laghi, Varese (D.D.P.), the Nuclear Medicine Unit, Department of Medicine, University Hospital of Padua (P.Z.), and the Pediatric Nephrology, Dialysis, and Transplantation Unit, Department of Women's and Children's Health, University of Padua (I.A.), Padua - all in Italy; the Department of Pediatric Nephrology, Başkent University Faculty of Medicine (E. Baskin, K.G.), and the Department of Pediatric Nephrology, Ankara University School of Medicine (F.Y., Z.B.O.), Ankara, the Department of Pediatric Nephrology and Pediatric Rheumatology, Pamukkale University School of Medicine, Denizli (S.Y.), and the Department of Pediatric Nephrology, Istanbul University-Cerrahpaşa, Cerrahpaşa School of Medicine, Istanbul (S.C.) - all in Turkey; the Pediatric Center, Institute of Clinical Medicine, Faculty of Medicine, Vilnius University, Vilnius (A.J., D.R.), and the Department of Radiology, Medical Academy, Lithuanian University of Health Sciences Kauno Klinikos, Kaunas (D.V.) - both in Lithuania; the Department of Pediatrics, Nephrology, and Hypertension, Medical University of Gdansk, Gdansk (A.Z., A.K.), the Department of Pediatrics and Nephrology, Medical University of Warsaw, Warsaw (G.K., A.S.), the Department of Pediatric Nephrology and Hypertension, Chair of Pediatrics, Pediatric Institute, Jagiellonian University Medical College, Krakow (D.D.), the Department of Pediatrics, Faculty of Medical Sciences in Zabrze, Medical University of Silesia in Katowice, Katowice (M.S.), the Department of Pediatrics and Nephrology, Medical University of Bialystok, Bialystok (K.T.-J.), and the Department of Pediatrics, Immunology, and Nephrology, Polish Mother's Memorial Hospital Research Institute, Lodz (M.T.) - all in Poland; the Department of Pediatric Nephrology, University Hospitals Leuven (D.M., S.D.R.), and PKD Research Group, Laboratory of Ion Channel Research, Department of Cellular and Molecular Medicine, KU Leuven (D.M.), Leuven, and the Division of Nephrology, Department of Pediatrics, University Hospital Center of Liège, Liège (J.L.) - all in Belgium; the Department of Pediatric Nephrology, University Hospital Vall d'Hebron, and Universidad Autónoma de Barcelona, Hospital Vall d'Hebron (G.A.), and Pediatric Nephrology, Hospital General de Granollers, Universitat Internacional de Catalunya (M.C.), Barcelona, and Hospital General Universitario Santa Lucía, Cartagena (J.E.C.S.) - all in Spain; the University of Cologne, Faculty of Medicine and University Hospital Cologne, Children's and Adolescents' Hospital, Cologne (L.T.W.), and the Division of Pediatric Nephrology, Center for Pediatrics and Adolescent Medicine, Heidelberg University Hospital, Heidelberg (O.M., F.S.) - both in Germany; and the Division of Pediatric Nephrology, Centro Materno Infantil do Norte, Centro Hospitalar Universitário do Porto, Porto, Portugal (A.C.A.).; Vajauskas D; From the Pediatric Nephrology, Dialysis, and Transplant Unit (W.M., G.P., J.S., G.M.) and the Pediatric Urology Unit (D.G.M.), Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico, and the Department of Clinical Sciences and Community Health, University of Milan (G.M.), Milan, the Department of General and Specialized Surgery for Women and Children, Università degli Studi della Campania 'Luigi Vanvitelli,' Naples (A.L.M., S.G., P.M.), the Institute for Maternal and Child Health-IRCCS Burlo Garofolo (M.P., E. Barbi) and the Department of Medical, Surgical, and Health Sciences, University of Trieste (E. Barbi), Trieste, Pediatric Nephrology and Dialysis, Pediatric Unit, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna (C.L.S., A.P.), the Nephrology and Dialysis Unit, Meyer Children's Hospital, Florence (F.B., M.M.), Pediatria C, Ospedale Donna Bambino, Verona (M.B.), the Pediatric Nephrology and Rheumatology Unit, Azienda Ospedaliera Universitaria Gaetano Martino, University of Messina, Messina (R.C.), the Nuclear Medicine Unit, Circolo Hospital and Macchi Foundation, Azienda Socio Sanitaria Territoriale Sette Laghi, Varese (D.D.P.), the Nuclear Medicine Unit, Department of Medicine, University Hospital of Padua (P.Z.), and the Pediatric Nephrology, Dialysis, and Transplantation Unit, Department of Women's and Children's Health, University of Padua (I.A.), Padua - all in Italy; the Department of Pediatric Nephrology, Başkent University Faculty of Medicine (E. Baskin, K.G.), and the Department of Pediatric Nephrology, Ankara University School of Medicine (F.Y., Z.B.O.), Ankara, the Department of Pediatric Nephrology and Pediatric Rheumatology, Pamukkale University School of Medicine, Denizli (S.Y.), and the Department of Pediatric Nephrology, Istanbul University-Cerrahpaşa, Cerrahpaşa School of Medicine, Istanbul (S.C.) - all in Turkey; the Pediatric Center, Institute of Clinical Medicine, Faculty of Medicine, Vilnius University, Vilnius (A.J., D.R.), and the Department of Radiology, Medical Academy, Lithuanian University of Health Sciences Kauno Klinikos, Kaunas (D.V.) - both in Lithuania; the Department of Pediatrics, Nephrology, and Hypertension, Medical University of Gdansk, Gdansk (A.Z., A.K.), the Department of Pediatrics and Nephrology, Medical University of Warsaw, Warsaw (G.K., A.S.), the Department of Pediatric Nephrology and Hypertension, Chair of Pediatrics, Pediatric Institute, Jagiellonian University Medical College, Krakow (D.D.), the Department of Pediatrics, Faculty of Medical Sciences in Zabrze, Medical University of Silesia in Katowice, Katowice (M.S.), the Department of Pediatrics and Nephrology, Medical University of Bialystok, Bialystok (K.T.-J.), and the Department of Pediatrics, Immunology, and Nephrology, Polish Mother's Memorial Hospital Research Institute, Lodz (M.T.) - all in Poland; the Department of Pediatric Nephrology, University Hospitals Leuven (D.M., S.D.R.), and PKD Research Group, Laboratory of Ion Channel Research, Department of Cellular and Molecular Medicine, KU Leuven (D.M.), Leuven, and the Division of Nephrology, Department of Pediatrics, University Hospital Center of Liège, Liège (J.L.) - all in Belgium; the Department of Pediatric Nephrology, University Hospital Vall d'Hebron, and Universidad Autónoma de Barcelona, Hospital Vall d'Hebron (G.A.), and Pediatric Nephrology, Hospital General de Granollers, Universitat Internacional de Catalunya (M.C.), Barcelona, and Hospital General Universitario Santa Lucía, Cartagena (J.E.C.S.) - all in Spain; the University of Cologne, Faculty of Medicine and University Hospital Cologne, Children's and Adolescents' Hospital, Cologne (L.T.W.), and the Division of Pediatric Nephrology, Center for Pediatrics and Adolescent Medicine, Heidelberg University Hospital, Heidelberg (O.M., F.S.) - both in Germany; and the Division of Pediatric Nephrology, Centro Materno Infantil do Norte, Centro Hospitalar Universitário do Porto, Porto, Portugal (A.C.A.).; Drozdz D; From the Pediatric Nephrology, Dialysis, and Transplant Unit (W.M., G.P., J.S., G.M.) and the Pediatric Urology Unit (D.G.M.), Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico, and the Department of Clinical Sciences and Community Health, University of Milan (G.M.), Milan, the Department of General and Specialized Surgery for Women and Children, Università degli Studi della Campania 'Luigi Vanvitelli,' Naples (A.L.M., S.G., P.M.), the Institute for Maternal and Child Health-IRCCS Burlo Garofolo (M.P., E. Barbi) and the Department of Medical, Surgical, and Health Sciences, University of Trieste (E. Barbi), Trieste, Pediatric Nephrology and Dialysis, Pediatric Unit, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna (C.L.S., A.P.), the Nephrology and Dialysis Unit, Meyer Children's Hospital, Florence (F.B., M.M.), Pediatria C, Ospedale Donna Bambino, Verona (M.B.), the Pediatric Nephrology and Rheumatology Unit, Azienda Ospedaliera Universitaria Gaetano Martino, University of Messina, Messina (R.C.), the Nuclear Medicine Unit, Circolo Hospital and Macchi Foundation, Azienda Socio Sanitaria Territoriale Sette Laghi, Varese (D.D.P.), the Nuclear Medicine Unit, Department of Medicine, University Hospital of Padua (P.Z.), and the Pediatric Nephrology, Dialysis, and Transplantation Unit, Department of Women's and Children's Health, University of Padua (I.A.), Padua - all in Italy; the Department of Pediatric Nephrology, Başkent University Faculty of Medicine (E. Baskin, K.G.), and the Department of Pediatric Nephrology, Ankara University School of Medicine (F.Y., Z.B.O.), Ankara, the Department of Pediatric Nephrology and Pediatric Rheumatology, Pamukkale University School of Medicine, Denizli (S.Y.), and the Department of Pediatric Nephrology, Istanbul University-Cerrahpaşa, Cerrahpaşa School of Medicine, Istanbul (S.C.) - all in Turkey; the Pediatric Center, Institute of Clinical Medicine, Faculty of Medicine, Vilnius University, Vilnius (A.J., D.R.), and the Department of Radiology, Medical Academy, Lithuanian University of Health Sciences Kauno Klinikos, Kaunas (D.V.) - both in Lithuania; the Department of Pediatrics, Nephrology, and Hypertension, Medical University of Gdansk, Gdansk (A.Z., A.K.), the Department of Pediatrics and Nephrology, Medical University of Warsaw, Warsaw (G.K., A.S.), the Department of Pediatric Nephrology and Hypertension, Chair of Pediatrics, Pediatric Institute, Jagiellonian University Medical College, Krakow (D.D.), the Department of Pediatrics, Faculty of Medical Sciences in Zabrze, Medical University of Silesia in Katowice, Katowice (M.S.), the Department of Pediatrics and Nephrology, Medical University of Bialystok, Bialystok (K.T.-J.), and the Department of Pediatrics, Immunology, and Nephrology, Polish Mother's Memorial Hospital Research Institute, Lodz (M.T.) - all in Poland; the Department of Pediatric Nephrology, University Hospitals Leuven (D.M., S.D.R.), and PKD Research Group, Laboratory of Ion Channel Research, Department of Cellular and Molecular Medicine, KU Leuven (D.M.), Leuven, and the Division of Nephrology, Department of Pediatrics, University Hospital Center of Liège, Liège (J.L.) - all in Belgium; the Department of Pediatric Nephrology, University Hospital Vall d'Hebron, and Universidad Autónoma de Barcelona, Hospital Vall d'Hebron (G.A.), and Pediatric Nephrology, Hospital General de Granollers, Universitat Internacional de Catalunya (M.C.), Barcelona, and Hospital General Universitario Santa Lucía, Cartagena (J.E.C.S.) - all in Spain; the University of Cologne, Faculty of Medicine and University Hospital Cologne, Children's and Adolescents' Hospital, Cologne (L.T.W.), and the Division of Pediatric Nephrology, Center for Pediatrics and Adolescent Medicine, Heidelberg University Hospital, Heidelberg (O.M., F.S.) - both in Germany; and the Division of Pediatric Nephrology, Centro Materno Infantil do Norte, Centro Hospitalar Universitário do Porto, Porto, Portugal (A.C.A.).; Szczepanska M; From the Pediatric Nephrology, Dialysis, and Transplant Unit (W.M., G.P., J.S., G.M.) and the Pediatric Urology Unit (D.G.M.), Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico, and the Department of Clinical Sciences and Community Health, University of Milan (G.M.), Milan, the Department of General and Specialized Surgery for Women and Children, Università degli Studi della Campania 'Luigi Vanvitelli,' Naples (A.L.M., S.G., P.M.), the Institute for Maternal and Child Health-IRCCS Burlo Garofolo (M.P., E. Barbi) and the Department of Medical, Surgical, and Health Sciences, University of Trieste (E. Barbi), Trieste, Pediatric Nephrology and Dialysis, Pediatric Unit, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna (C.L.S., A.P.), the Nephrology and Dialysis Unit, Meyer Children's Hospital, Florence (F.B., M.M.), Pediatria C, Ospedale Donna Bambino, Verona (M.B.), the Pediatric Nephrology and Rheumatology Unit, Azienda Ospedaliera Universitaria Gaetano Martino, University of Messina, Messina (R.C.), the Nuclear Medicine Unit, Circolo Hospital and Macchi Foundation, Azienda Socio Sanitaria Territoriale Sette Laghi, Varese (D.D.P.), the Nuclear Medicine Unit, Department of Medicine, University Hospital of Padua (P.Z.), and the Pediatric Nephrology, Dialysis, and Transplantation Unit, Department of Women's and Children's Health, University of Padua (I.A.), Padua - all in Italy; the Department of Pediatric Nephrology, Başkent University Faculty of Medicine (E. Baskin, K.G.), and the Department of Pediatric Nephrology, Ankara University School of Medicine (F.Y., Z.B.O.), Ankara, the Department of Pediatric Nephrology and Pediatric Rheumatology, Pamukkale University School of Medicine, Denizli (S.Y.), and the Department of Pediatric Nephrology, Istanbul University-Cerrahpaşa, Cerrahpaşa School of Medicine, Istanbul (S.C.) - all in Turkey; the Pediatric Center, Institute of Clinical Medicine, Faculty of Medicine, Vilnius University, Vilnius (A.J., D.R.), and the Department of Radiology, Medical Academy, Lithuanian University of Health Sciences Kauno Klinikos, Kaunas (D.V.) - both in Lithuania; the Department of Pediatrics, Nephrology, and Hypertension, Medical University of Gdansk, Gdansk (A.Z., A.K.), the Department of Pediatrics and Nephrology, Medical University of Warsaw, Warsaw (G.K., A.S.), the Department of Pediatric Nephrology and Hypertension, Chair of Pediatrics, Pediatric Institute, Jagiellonian University Medical College, Krakow (D.D.), the Department of Pediatrics, Faculty of Medical Sciences in Zabrze, Medical University of Silesia in Katowice, Katowice (M.S.), the Department of Pediatrics and Nephrology, Medical University of Bialystok, Bialystok (K.T.-J.), and the Department of Pediatrics, Immunology, and Nephrology, Polish Mother's Memorial Hospital Research Institute, Lodz (M.T.) - all in Poland; the Department of Pediatric Nephrology, University Hospitals Leuven (D.M., S.D.R.), and PKD Research Group, Laboratory of Ion Channel Research, Department of Cellular and Molecular Medicine, KU Leuven (D.M.), Leuven, and the Division of Nephrology, Department of Pediatrics, University Hospital Center of Liège, Liège (J.L.) - all in Belgium; the Department of Pediatric Nephrology, University Hospital Vall d'Hebron, and Universidad Autónoma de Barcelona, Hospital Vall d'Hebron (G.A.), and Pediatric Nephrology, Hospital General de Granollers, Universitat Internacional de Catalunya (M.C.), Barcelona, and Hospital General Universitario Santa Lucía, Cartagena (J.E.C.S.) - all in Spain; the University of Cologne, Faculty of Medicine and University Hospital Cologne, Children's and Adolescents' Hospital, Cologne (L.T.W.), and the Division of Pediatric Nephrology, Center for Pediatrics and Adolescent Medicine, Heidelberg University Hospital, Heidelberg (O.M., F.S.) - both in Germany; and the Division of Pediatric Nephrology, Centro Materno Infantil do Norte, Centro Hospitalar Universitário do Porto, Porto, Portugal (A.C.A.).; Caliskan S; From the Pediatric Nephrology, Dialysis, and Transplant Unit (W.M., G.P., J.S., G.M.) and the Pediatric Urology Unit (D.G.M.), Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico, and the Department of Clinical Sciences and Community Health, University of Milan (G.M.), Milan, the Department of General and Specialized Surgery for Women and Children, Università degli Studi della Campania 'Luigi Vanvitelli,' Naples (A.L.M., S.G., P.M.), the Institute for Maternal and Child Health-IRCCS Burlo Garofolo (M.P., E. Barbi) and the Department of Medical, Surgical, and Health Sciences, University of Trieste (E. Barbi), Trieste, Pediatric Nephrology and Dialysis, Pediatric Unit, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna (C.L.S., A.P.), the Nephrology and Dialysis Unit, Meyer Children's Hospital, Florence (F.B., M.M.), Pediatria C, Ospedale Donna Bambino, Verona (M.B.), the Pediatric Nephrology and Rheumatology Unit, Azienda Ospedaliera Universitaria Gaetano Martino, University of Messina, Messina (R.C.), the Nuclear Medicine Unit, Circolo Hospital and Macchi Foundation, Azienda Socio Sanitaria Territoriale Sette Laghi, Varese (D.D.P.), the Nuclear Medicine Unit, Department of Medicine, University Hospital of Padua (P.Z.), and the Pediatric Nephrology, Dialysis, and Transplantation Unit, Department of Women's and Children's Health, University of Padua (I.A.), Padua - all in Italy; the Department of Pediatric Nephrology, Başkent University Faculty of Medicine (E. Baskin, K.G.), and the Department of Pediatric Nephrology, Ankara University School of Medicine (F.Y., Z.B.O.), Ankara, the Department of Pediatric Nephrology and Pediatric Rheumatology, Pamukkale University School of Medicine, Denizli (S.Y.), and the Department of Pediatric Nephrology, Istanbul University-Cerrahpaşa, Cerrahpaşa School of Medicine, Istanbul (S.C.) - all in Turkey; the Pediatric Center, Institute of Clinical Medicine, Faculty of Medicine, Vilnius University, Vilnius (A.J., D.R.), and the Department of Radiology, Medical Academy, Lithuanian University of Health Sciences Kauno Klinikos, Kaunas (D.V.) - both in Lithuania; the Department of Pediatrics, Nephrology, and Hypertension, Medical University of Gdansk, Gdansk (A.Z., A.K.), the Department of Pediatrics and Nephrology, Medical University of Warsaw, Warsaw (G.K., A.S.), the Department of Pediatric Nephrology and Hypertension, Chair of Pediatrics, Pediatric Institute, Jagiellonian University Medical College, Krakow (D.D.), the Department of Pediatrics, Faculty of Medical Sciences in Zabrze, Medical University of Silesia in Katowice, Katowice (M.S.), the Department of Pediatrics and Nephrology, Medical University of Bialystok, Bialystok (K.T.-J.), and the Department of Pediatrics, Immunology, and Nephrology, Polish Mother's Memorial Hospital Research Institute, Lodz (M.T.) - all in Poland; the Department of Pediatric Nephrology, University Hospitals Leuven (D.M., S.D.R.), and PKD Research Group, Laboratory of Ion Channel Research, Department of Cellular and Molecular Medicine, KU Leuven (D.M.), Leuven, and the Division of Nephrology, Department of Pediatrics, University Hospital Center of Liège, Liège (J.L.) - all in Belgium; the Department of Pediatric Nephrology, University Hospital Vall d'Hebron, and Universidad Autónoma de Barcelona, Hospital Vall d'Hebron (G.A.), and Pediatric Nephrology, Hospital General de Granollers, Universitat Internacional de Catalunya (M.C.), Barcelona, and Hospital General Universitario Santa Lucía, Cartagena (J.E.C.S.) - all in Spain; the University of Cologne, Faculty of Medicine and University Hospital Cologne, Children's and Adolescents' Hospital, Cologne (L.T.W.), and the Division of Pediatric Nephrology, Center for Pediatrics and Adolescent Medicine, Heidelberg University Hospital, Heidelberg (O.M., F.S.) - both in Germany; and the Division of Pediatric Nephrology, Centro Materno Infantil do Norte, Centro Hospitalar Universitário do Porto, Porto, Portugal (A.C.A.).; Lombet J; From the Pediatric Nephrology, Dialysis, and Transplant Unit (W.M., G.P., J.S., G.M.) and the Pediatric Urology Unit (D.G.M.), Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico, and the Department of Clinical Sciences and Community Health, University of Milan (G.M.), Milan, the Department of General and Specialized Surgery for Women and Children, Università degli Studi della Campania 'Luigi Vanvitelli,' Naples (A.L.M., S.G., P.M.), the Institute for Maternal and Child Health-IRCCS Burlo Garofolo (M.P., E. Barbi) and the Department of Medical, Surgical, and Health Sciences, University of Trieste (E. Barbi), Trieste, Pediatric Nephrology and Dialysis, Pediatric Unit, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna (C.L.S., A.P.), the Nephrology and Dialysis Unit, Meyer Children's Hospital, Florence (F.B., M.M.), Pediatria C, Ospedale Donna Bambino, Verona (M.B.), the Pediatric Nephrology and Rheumatology Unit, Azienda Ospedaliera Universitaria Gaetano Martino, University of Messina, Messina (R.C.), the Nuclear Medicine Unit, Circolo Hospital and Macchi Foundation, Azienda Socio Sanitaria Territoriale Sette Laghi, Varese (D.D.P.), the Nuclear Medicine Unit, Department of Medicine, University Hospital of Padua (P.Z.), and the Pediatric Nephrology, Dialysis, and Transplantation Unit, Department of Women's and Children's Health, University of Padua (I.A.), Padua - all in Italy; the Department of Pediatric Nephrology, Başkent University Faculty of Medicine (E. Baskin, K.G.), and the Department of Pediatric Nephrology, Ankara University School of Medicine (F.Y., Z.B.O.), Ankara, the Department of Pediatric Nephrology and Pediatric Rheumatology, Pamukkale University School of Medicine, Denizli (S.Y.), and the Department of Pediatric Nephrology, Istanbul University-Cerrahpaşa, Cerrahpaşa School of Medicine, Istanbul (S.C.) - all in Turkey; the Pediatric Center, Institute of Clinical Medicine, Faculty of Medicine, Vilnius University, Vilnius (A.J., D.R.), and the Department of Radiology, Medical Academy, Lithuanian University of Health Sciences Kauno Klinikos, Kaunas (D.V.) - both in Lithuania; the Department of Pediatrics, Nephrology, and Hypertension, Medical University of Gdansk, Gdansk (A.Z., A.K.), the Department of Pediatrics and Nephrology, Medical University of Warsaw, Warsaw (G.K., A.S.), the Department of Pediatric Nephrology and Hypertension, Chair of Pediatrics, Pediatric Institute, Jagiellonian University Medical College, Krakow (D.D.), the Department of Pediatrics, Faculty of Medical Sciences in Zabrze, Medical University of Silesia in Katowice, Katowice (M.S.), the Department of Pediatrics and Nephrology, Medical University of Bialystok, Bialystok (K.T.-J.), and the Department of Pediatrics, Immunology, and Nephrology, Polish Mother's Memorial Hospital Research Institute, Lodz (M.T.) - all in Poland; the Department of Pediatric Nephrology, University Hospitals Leuven (D.M., S.D.R.), and PKD Research Group, Laboratory of Ion Channel Research, Department of Cellular and Molecular Medicine, KU Leuven (D.M.), Leuven, and the Division of Nephrology, Department of Pediatrics, University Hospital Center of Liège, Liège (J.L.) - all in Belgium; the Department of Pediatric Nephrology, University Hospital Vall d'Hebron, and Universidad Autónoma de Barcelona, Hospital Vall d'Hebron (G.A.), and Pediatric Nephrology, Hospital General de Granollers, Universitat Internacional de Catalunya (M.C.), Barcelona, and Hospital General Universitario Santa Lucía, Cartagena (J.E.C.S.) - all in Spain; the University of Cologne, Faculty of Medicine and University Hospital Cologne, Children's and Adolescents' Hospital, Cologne (L.T.W.), and the Division of Pediatric Nephrology, Center for Pediatrics and Adolescent Medicine, Heidelberg University Hospital, Heidelberg (O.M., F.S.) - both in Germany; and the Division of Pediatric Nephrology, Centro Materno Infantil do Norte, Centro Hospitalar Universitário do Porto, Porto, Portugal (A.C.A.).; Minoli DG; From the Pediatric Nephrology, Dialysis, and Transplant Unit (W.M., G.P., J.S., G.M.) and the Pediatric Urology Unit (D.G.M.), Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico, and the Department of Clinical Sciences and Community Health, University of Milan (G.M.), Milan, the Department of General and Specialized Surgery for Women and Children, Università degli Studi della Campania 'Luigi Vanvitelli,' Naples (A.L.M., S.G., P.M.), the Institute for Maternal and Child Health-IRCCS Burlo Garofolo (M.P., E. Barbi) and the Department of Medical, Surgical, and Health Sciences, University of Trieste (E. Barbi), Trieste, Pediatric Nephrology and Dialysis, Pediatric Unit, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna (C.L.S., A.P.), the Nephrology and Dialysis Unit, Meyer Children's Hospital, Florence (F.B., M.M.), Pediatria C, Ospedale Donna Bambino, Verona (M.B.), the Pediatric Nephrology and Rheumatology Unit, Azienda Ospedaliera Universitaria Gaetano Martino, University of Messina, Messina (R.C.), the Nuclear Medicine Unit, Circolo Hospital and Macchi Foundation, Azienda Socio Sanitaria Territoriale Sette Laghi, Varese (D.D.P.), the Nuclear Medicine Unit, Department of Medicine, University Hospital of Padua (P.Z.), and the Pediatric Nephrology, Dialysis, and Transplantation Unit, Department of Women's and Children's Health, University of Padua (I.A.), Padua - all in Italy; the Department of Pediatric Nephrology, Başkent University Faculty of Medicine (E. Baskin, K.G.), and the Department of Pediatric Nephrology, Ankara University School of Medicine (F.Y., Z.B.O.), Ankara, the Department of Pediatric Nephrology and Pediatric Rheumatology, Pamukkale University School of Medicine, Denizli (S.Y.), and the Department of Pediatric Nephrology, Istanbul University-Cerrahpaşa, Cerrahpaşa School of Medicine, Istanbul (S.C.) - all in Turkey; the Pediatric Center, Institute of Clinical Medicine, Faculty of Medicine, Vilnius University, Vilnius (A.J., D.R.), and the Department of Radiology, Medical Academy, Lithuanian University of Health Sciences Kauno Klinikos, Kaunas (D.V.) - both in Lithuania; the Department of Pediatrics, Nephrology, and Hypertension, Medical University of Gdansk, Gdansk (A.Z., A.K.), the Department of Pediatrics and Nephrology, Medical University of Warsaw, Warsaw (G.K., A.S.), the Department of Pediatric Nephrology and Hypertension, Chair of Pediatrics, Pediatric Institute, Jagiellonian University Medical College, Krakow (D.D.), the Department of Pediatrics, Faculty of Medical Sciences in Zabrze, Medical University of Silesia in Katowice, Katowice (M.S.), the Department of Pediatrics and Nephrology, Medical University of Bialystok, Bialystok (K.T.-J.), and the Department of Pediatrics, Immunology, and Nephrology, Polish Mother's Memorial Hospital Research Institute, Lodz (M.T.) - all in Poland; the Department of Pediatric Nephrology, University Hospitals Leuven (D.M., S.D.R.), and PKD Research Group, Laboratory of Ion Channel Research, Department of Cellular and Molecular Medicine, KU Leuven (D.M.), Leuven, and the Division of Nephrology, Department of Pediatrics, University Hospital Center of Liège, Liège (J.L.) - all in Belgium; the Department of Pediatric Nephrology, University Hospital Vall d'Hebron, and Universidad Autónoma de Barcelona, Hospital Vall d'Hebron (G.A.), and Pediatric Nephrology, Hospital General de Granollers, Universitat Internacional de Catalunya (M.C.), Barcelona, and Hospital General Universitario Santa Lucía, Cartagena (J.E.C.S.) - all in Spain; the University of Cologne, Faculty of Medicine and University Hospital Cologne, Children's and Adolescents' Hospital, Cologne (L.T.W.), and the Division of Pediatric Nephrology, Center for Pediatrics and Adolescent Medicine, Heidelberg University Hospital, Heidelberg (O.M., F.S.) - both in Germany; and the Division of Pediatric Nephrology, Centro Materno Infantil do Norte, Centro Hospitalar Universitário do Porto, Porto, Portugal (A.C.A.).; Guarino S; From the Pediatric Nephrology, Dialysis, and Transplant Unit (W.M., G.P., J.S., G.M.) and the Pediatric Urology Unit (D.G.M.), Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico, and the Department of Clinical Sciences and Community Health, University of Milan (G.M.), Milan, the Department of General and Specialized Surgery for Women and Children, Università degli Studi della Campania 'Luigi Vanvitelli,' Naples (A.L.M., S.G., P.M.), the Institute for Maternal and Child Health-IRCCS Burlo Garofolo (M.P., E. Barbi) and the Department of Medical, Surgical, and Health Sciences, University of Trieste (E. Barbi), Trieste, Pediatric Nephrology and Dialysis, Pediatric Unit, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna (C.L.S., A.P.), the Nephrology and Dialysis Unit, Meyer Children's Hospital, Florence (F.B., M.M.), Pediatria C, Ospedale Donna Bambino, Verona (M.B.), the Pediatric Nephrology and Rheumatology Unit, Azienda Ospedaliera Universitaria Gaetano Martino, University of Messina, Messina (R.C.), the Nuclear Medicine Unit, Circolo Hospital and Macchi Foundation, Azienda Socio Sanitaria Territoriale Sette Laghi, Varese (D.D.P.), the Nuclear Medicine Unit, Department of Medicine, University Hospital of Padua (P.Z.), and the Pediatric Nephrology, Dialysis, and Transplantation Unit, Department of Women's and Children's Health, University of Padua (I.A.), Padua - all in Italy; the Department of Pediatric Nephrology, Başkent University Faculty of Medicine (E. Baskin, K.G.), and the Department of Pediatric Nephrology, Ankara University School of Medicine (F.Y., Z.B.O.), Ankara, the Department of Pediatric Nephrology and Pediatric Rheumatology, Pamukkale University School of Medicine, Denizli (S.Y.), and the Department of Pediatric Nephrology, Istanbul University-Cerrahpaşa, Cerrahpaşa School of Medicine, Istanbul (S.C.) - all in Turkey; the Pediatric Center, Institute of Clinical Medicine, Faculty of Medicine, Vilnius University, Vilnius (A.J., D.R.), and the Department of Radiology, Medical Academy, Lithuanian University of Health Sciences Kauno Klinikos, Kaunas (D.V.) - both in Lithuania; the Department of Pediatrics, Nephrology, and Hypertension, Medical University of Gdansk, Gdansk (A.Z., A.K.), the Department of Pediatrics and Nephrology, Medical University of Warsaw, Warsaw (G.K., A.S.), the Department of Pediatric Nephrology and Hypertension, Chair of Pediatrics, Pediatric Institute, Jagiellonian University Medical College, Krakow (D.D.), the Department of Pediatrics, Faculty of Medical Sciences in Zabrze, Medical University of Silesia in Katowice, Katowice (M.S.), the Department of Pediatrics and Nephrology, Medical University of Bialystok, Bialystok (K.T.-J.), and the Department of Pediatrics, Immunology, and Nephrology, Polish Mother's Memorial Hospital Research Institute, Lodz (M.T.) - all in Poland; the Department of Pediatric Nephrology, University Hospitals Leuven (D.M., S.D.R.), and PKD Research Group, Laboratory of Ion Channel Research, Department of Cellular and Molecular Medicine, KU Leuven (D.M.), Leuven, and the Division of Nephrology, Department of Pediatrics, University Hospital Center of Liège, Liège (J.L.) - all in Belgium; the Department of Pediatric Nephrology, University Hospital Vall d'Hebron, and Universidad Autónoma de Barcelona, Hospital Vall d'Hebron (G.A.), and Pediatric Nephrology, Hospital General de Granollers, Universitat Internacional de Catalunya (M.C.), Barcelona, and Hospital General Universitario Santa Lucía, Cartagena (J.E.C.S.) - all in Spain; the University of Cologne, Faculty of Medicine and University Hospital Cologne, Children's and Adolescents' Hospital, Cologne (L.T.W.), and the Division of Pediatric Nephrology, Center for Pediatrics and Adolescent Medicine, Heidelberg University Hospital, Heidelberg (O.M., F.S.) - both in Germany; and the Division of Pediatric Nephrology, Centro Materno Infantil do Norte, Centro Hospitalar Universitário do Porto, Porto, Portugal (A.C.A.).; Gulleroglu K; From the Pediatric Nephrology, Dialysis, and Transplant Unit (W.M., G.P., J.S., G.M.) and the Pediatric Urology Unit (D.G.M.), Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico, and the Department of Clinical Sciences and Community Health, University of Milan (G.M.), Milan, the Department of General and Specialized Surgery for Women and Children, Università degli Studi della Campania 'Luigi Vanvitelli,' Naples (A.L.M., S.G., P.M.), the Institute for Maternal and Child Health-IRCCS Burlo Garofolo (M.P., E. Barbi) and the Department of Medical, Surgical, and Health Sciences, University of Trieste (E. Barbi), Trieste, Pediatric Nephrology and Dialysis, Pediatric Unit, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna (C.L.S., A.P.), the Nephrology and Dialysis Unit, Meyer Children's Hospital, Florence (F.B., M.M.), Pediatria C, Ospedale Donna Bambino, Verona (M.B.), the Pediatric Nephrology and Rheumatology Unit, Azienda Ospedaliera Universitaria Gaetano Martino, University of Messina, Messina (R.C.), the Nuclear Medicine Unit, Circolo Hospital and Macchi Foundation, Azienda Socio Sanitaria Territoriale Sette Laghi, Varese (D.D.P.), the Nuclear Medicine Unit, Department of Medicine, University Hospital of Padua (P.Z.), and the Pediatric Nephrology, Dialysis, and Transplantation Unit, Department of Women's and Children's Health, University of Padua (I.A.), Padua - all in Italy; the Department of Pediatric Nephrology, Başkent University Faculty of Medicine (E. Baskin, K.G.), and the Department of Pediatric Nephrology, Ankara University School of Medicine (F.Y., Z.B.O.), Ankara, the Department of Pediatric Nephrology and Pediatric Rheumatology, Pamukkale University School of Medicine, Denizli (S.Y.), and the Department of Pediatric Nephrology, Istanbul University-Cerrahpaşa, Cerrahpaşa School of Medicine, Istanbul (S.C.) - all in Turkey; the Pediatric Center, Institute of Clinical Medicine, Faculty of Medicine, Vilnius University, Vilnius (A.J., D.R.), and the Department of Radiology, Medical Academy, Lithuanian University of Health Sciences Kauno Klinikos, Kaunas (D.V.) - both in Lithuania; the Department of Pediatrics, Nephrology, and Hypertension, Medical University of Gdansk, Gdansk (A.Z., A.K.), the Department of Pediatrics and Nephrology, Medical University of Warsaw, Warsaw (G.K., A.S.), the Department of Pediatric Nephrology and Hypertension, Chair of Pediatrics, Pediatric Institute, Jagiellonian University Medical College, Krakow (D.D.), the Department of Pediatrics, Faculty of Medical Sciences in Zabrze, Medical University of Silesia in Katowice, Katowice (M.S.), the Department of Pediatrics and Nephrology, Medical University of Bialystok, Bialystok (K.T.-J.), and the Department of Pediatrics, Immunology, and Nephrology, Polish Mother's Memorial Hospital Research Institute, Lodz (M.T.) - all in Poland; the Department of Pediatric Nephrology, University Hospitals Leuven (D.M., S.D.R.), and PKD Research Group, Laboratory of Ion Channel Research, Department of Cellular and Molecular Medicine, KU Leuven (D.M.), Leuven, and the Division of Nephrology, Department of Pediatrics, University Hospital Center of Liège, Liège (J.L.) - all in Belgium; the Department of Pediatric Nephrology, University Hospital Vall d'Hebron, and Universidad Autónoma de Barcelona, Hospital Vall d'Hebron (G.A.), and Pediatric Nephrology, Hospital General de Granollers, Universitat Internacional de Catalunya (M.C.), Barcelona, and Hospital General Universitario Santa Lucía, Cartagena (J.E.C.S.) - all in Spain; the University of Cologne, Faculty of Medicine and University Hospital Cologne, Children's and Adolescents' Hospital, Cologne (L.T.W.), and the Division of Pediatric Nephrology, Center for Pediatrics and Adolescent Medicine, Heidelberg University Hospital, Heidelberg (O.M., F.S.) - both in Germany; and the Division of Pediatric Nephrology, Centro Materno Infantil do Norte, Centro Hospitalar Universitário do Porto, Porto, Portugal (A.C.A.).; Ruzgiene D; From the Pediatric Nephrology, Dialysis, and Transplant Unit (W.M., G.P., J.S., G.M.) and the Pediatric Urology Unit (D.G.M.), Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico, and the Department of Clinical Sciences and Community Health, University of Milan (G.M.), Milan, the Department of General and Specialized Surgery for Women and Children, Università degli Studi della Campania 'Luigi Vanvitelli,' Naples (A.L.M., S.G., P.M.), the Institute for Maternal and Child Health-IRCCS Burlo Garofolo (M.P., E. Barbi) and the Department of Medical, Surgical, and Health Sciences, University of Trieste (E. Barbi), Trieste, Pediatric Nephrology and Dialysis, Pediatric Unit, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna (C.L.S., A.P.), the Nephrology and Dialysis Unit, Meyer Children's Hospital, Florence (F.B., M.M.), Pediatria C, Ospedale Donna Bambino, Verona (M.B.), the Pediatric Nephrology and Rheumatology Unit, Azienda Ospedaliera Universitaria Gaetano Martino, University of Messina, Messina (R.C.), the Nuclear Medicine Unit, Circolo Hospital and Macchi Foundation, Azienda Socio Sanitaria Territoriale Sette Laghi, Varese (D.D.P.), the Nuclear Medicine Unit, Department of Medicine, University Hospital of Padua (P.Z.), and the Pediatric Nephrology, Dialysis, and Transplantation Unit, Department of Women's and Children's Health, University of Padua (I.A.), Padua - all in Italy; the Department of Pediatric Nephrology, Başkent University Faculty of Medicine (E. Baskin, K.G.), and the Department of Pediatric Nephrology, Ankara University School of Medicine (F.Y., Z.B.O.), Ankara, the Department of Pediatric Nephrology and Pediatric Rheumatology, Pamukkale University School of Medicine, Denizli (S.Y.), and the Department of Pediatric Nephrology, Istanbul University-Cerrahpaşa, Cerrahpaşa School of Medicine, Istanbul (S.C.) - all in Turkey; the Pediatric Center, Institute of Clinical Medicine, Faculty of Medicine, Vilnius University, Vilnius (A.J., D.R.), and the Department of Radiology, Medical Academy, Lithuanian University of Health Sciences Kauno Klinikos, Kaunas (D.V.) - both in Lithuania; the Department of Pediatrics, Nephrology, and Hypertension, Medical University of Gdansk, Gdansk (A.Z., A.K.), the Department of Pediatrics and Nephrology, Medical University of Warsaw, Warsaw (G.K., A.S.), the Department of Pediatric Nephrology and Hypertension, Chair of Pediatrics, Pediatric Institute, Jagiellonian University Medical College, Krakow (D.D.), the Department of Pediatrics, Faculty of Medical Sciences in Zabrze, Medical University of Silesia in Katowice, Katowice (M.S.), the Department of Pediatrics and Nephrology, Medical University of Bialystok, Bialystok (K.T.-J.), and the Department of Pediatrics, Immunology, and Nephrology, Polish Mother's Memorial Hospital Research Institute, Lodz (M.T.) - all in Poland; the Department of Pediatric Nephrology, University Hospitals Leuven (D.M., S.D.R.), and PKD Research Group, Laboratory of Ion Channel Research, Department of Cellular and Molecular Medicine, KU Leuven (D.M.), Leuven, and the Division of Nephrology, Department of Pediatrics, University Hospital Center of Liège, Liège (J.L.) - all in Belgium; the Department of Pediatric Nephrology, University Hospital Vall d'Hebron, and Universidad Autónoma de Barcelona, Hospital Vall d'Hebron (G.A.), and Pediatric Nephrology, Hospital General de Granollers, Universitat Internacional de Catalunya (M.C.), Barcelona, and Hospital General Universitario Santa Lucía, Cartagena (J.E.C.S.) - all in Spain; the University of Cologne, Faculty of Medicine and University Hospital Cologne, Children's and Adolescents' Hospital, Cologne (L.T.W.), and the Division of Pediatric Nephrology, Center for Pediatrics and Adolescent Medicine, Heidelberg University Hospital, Heidelberg (O.M., F.S.) - both in Germany; and the Division of Pediatric Nephrology, Centro Materno Infantil do Norte, Centro Hospitalar Universitário do Porto, Porto, Portugal (A.C.A.).; Szmigielska A; From the Pediatric Nephrology, Dialysis, and Transplant Unit (W.M., G.P., J.S., G.M.) and the Pediatric Urology Unit (D.G.M.), Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico, and the Department of Clinical Sciences and Community Health, University of Milan (G.M.), Milan, the Department of General and Specialized Surgery for Women and Children, Università degli Studi della Campania 'Luigi Vanvitelli,' Naples (A.L.M., S.G., P.M.), the Institute for Maternal and Child Health-IRCCS Burlo Garofolo (M.P., E. Barbi) and the Department of Medical, Surgical, and Health Sciences, University of Trieste (E. Barbi), Trieste, Pediatric Nephrology and Dialysis, Pediatric Unit, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna (C.L.S., A.P.), the Nephrology and Dialysis Unit, Meyer Children's Hospital, Florence (F.B., M.M.), Pediatria C, Ospedale Donna Bambino, Verona (M.B.), the Pediatric Nephrology and Rheumatology Unit, Azienda Ospedaliera Universitaria Gaetano Martino, University of Messina, Messina (R.C.), the Nuclear Medicine Unit, Circolo Hospital and Macchi Foundation, Azienda Socio Sanitaria Territoriale Sette Laghi, Varese (D.D.P.), the Nuclear Medicine Unit, Department of Medicine, University Hospital of Padua (P.Z.), and the Pediatric Nephrology, Dialysis, and Transplantation Unit, Department of Women's and Children's Health, University of Padua (I.A.), Padua - all in Italy; the Department of Pediatric Nephrology, Başkent University Faculty of Medicine (E. Baskin, K.G.), and the Department of Pediatric Nephrology, Ankara University School of Medicine (F.Y., Z.B.O.), Ankara, the Department of Pediatric Nephrology and Pediatric Rheumatology, Pamukkale University School of Medicine, Denizli (S.Y.), and the Department of Pediatric Nephrology, Istanbul University-Cerrahpaşa, Cerrahpaşa School of Medicine, Istanbul (S.C.) - all in Turkey; the Pediatric Center, Institute of Clinical Medicine, Faculty of Medicine, Vilnius University, Vilnius (A.J., D.R.), and the Department of Radiology, Medical Academy, Lithuanian University of Health Sciences Kauno Klinikos, Kaunas (D.V.) - both in Lithuania; the Department of Pediatrics, Nephrology, and Hypertension, Medical University of Gdansk, Gdansk (A.Z., A.K.), the Department of Pediatrics and Nephrology, Medical University of Warsaw, Warsaw (G.K., A.S.), the Department of Pediatric Nephrology and Hypertension, Chair of Pediatrics, Pediatric Institute, Jagiellonian University Medical College, Krakow (D.D.), the Department of Pediatrics, Faculty of Medical Sciences in Zabrze, Medical University of Silesia in Katowice, Katowice (M.S.), the Department of Pediatrics and Nephrology, Medical University of Bialystok, Bialystok (K.T.-J.), and the Department of Pediatrics, Immunology, and Nephrology, Polish Mother's Memorial Hospital Research Institute, Lodz (M.T.) - all in Poland; the Department of Pediatric Nephrology, University Hospitals Leuven (D.M., S.D.R.), and PKD Research Group, Laboratory of Ion Channel Research, Department of Cellular and Molecular Medicine, KU Leuven (D.M.), Leuven, and the Division of Nephrology, Department of Pediatrics, University Hospital Center of Liège, Liège (J.L.) - all in Belgium; the Department of Pediatric Nephrology, University Hospital Vall d'Hebron, and Universidad Autónoma de Barcelona, Hospital Vall d'Hebron (G.A.), and Pediatric Nephrology, Hospital General de Granollers, Universitat Internacional de Catalunya (M.C.), Barcelona, and Hospital General Universitario Santa Lucía, Cartagena (J.E.C.S.) - all in Spain; the University of Cologne, Faculty of Medicine and University Hospital Cologne, Children's and Adolescents' Hospital, Cologne (L.T.W.), and the Division of Pediatric Nephrology, Center for Pediatrics and Adolescent Medicine, Heidelberg University Hospital, Heidelberg (O.M., F.S.) - both in Germany; and the Division of Pediatric Nephrology, Centro Materno Infantil do Norte, Centro Hospitalar Universitário do Porto, Porto, Portugal (A.C.A.).; Barbi E; From the Pediatric Nephrology, Dialysis, and Transplant Unit (W.M., G.P., J.S., G.M.) and the Pediatric Urology Unit (D.G.M.), Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico, and the Department of Clinical Sciences and Community Health, University of Milan (G.M.), Milan, the Department of General and Specialized Surgery for Women and Children, Università degli Studi della Campania 'Luigi Vanvitelli,' Naples (A.L.M., S.G., P.M.), the Institute for Maternal and Child Health-IRCCS Burlo Garofolo (M.P., E. Barbi) and the Department of Medical, Surgical, and Health Sciences, University of Trieste (E. Barbi), Trieste, Pediatric Nephrology and Dialysis, Pediatric Unit, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna (C.L.S., A.P.), the Nephrology and Dialysis Unit, Meyer Children's Hospital, Florence (F.B., M.M.), Pediatria C, Ospedale Donna Bambino, Verona (M.B.), the Pediatric Nephrology and Rheumatology Unit, Azienda Ospedaliera Universitaria Gaetano Martino, University of Messina, Messina (R.C.), the Nuclear Medicine Unit, Circolo Hospital and Macchi Foundation, Azienda Socio Sanitaria Territoriale Sette Laghi, Varese (D.D.P.), the Nuclear Medicine Unit, Department of Medicine, University Hospital of Padua (P.Z.), and the Pediatric Nephrology, Dialysis, and Transplantation Unit, Department of Women's and Children's Health, University of Padua (I.A.), Padua - all in Italy; the Department of Pediatric Nephrology, Başkent University Faculty of Medicine (E. Baskin, K.G.), and the Department of Pediatric Nephrology, Ankara University School of Medicine (F.Y., Z.B.O.), Ankara, the Department of Pediatric Nephrology and Pediatric Rheumatology, Pamukkale University School of Medicine, Denizli (S.Y.), and the Department of Pediatric Nephrology, Istanbul University-Cerrahpaşa, Cerrahpaşa School of Medicine, Istanbul (S.C.) - all in Turkey; the Pediatric Center, Institute of Clinical Medicine, Faculty of Medicine, Vilnius University, Vilnius (A.J., D.R.), and the Department of Radiology, Medical Academy, Lithuanian University of Health Sciences Kauno Klinikos, Kaunas (D.V.) - both in Lithuania; the Department of Pediatrics, Nephrology, and Hypertension, Medical University of Gdansk, Gdansk (A.Z., A.K.), the Department of Pediatrics and Nephrology, Medical University of Warsaw, Warsaw (G.K., A.S.), the Department of Pediatric Nephrology and Hypertension, Chair of Pediatrics, Pediatric Institute, Jagiellonian University Medical College, Krakow (D.D.), the Department of Pediatrics, Faculty of Medical Sciences in Zabrze, Medical University of Silesia in Katowice, Katowice (M.S.), the Department of Pediatrics and Nephrology, Medical University of Bialystok, Bialystok (K.T.-J.), and the Department of Pediatrics, Immunology, and Nephrology, Polish Mother's Memorial Hospital Research Institute, Lodz (M.T.) - all in Poland; the Department of Pediatric Nephrology, University Hospitals Leuven (D.M., S.D.R.), and PKD Research Group, Laboratory of Ion Channel Research, Department of Cellular and Molecular Medicine, KU Leuven (D.M.), Leuven, and the Division of Nephrology, Department of Pediatrics, University Hospital Center of Liège, Liège (J.L.) - all in Belgium; the Department of Pediatric Nephrology, University Hospital Vall d'Hebron, and Universidad Autónoma de Barcelona, Hospital Vall d'Hebron (G.A.), and Pediatric Nephrology, Hospital General de Granollers, Universitat Internacional de Catalunya (M.C.), Barcelona, and Hospital General Universitario Santa Lucía, Cartagena (J.E.C.S.) - all in Spain; the University of Cologne, Faculty of Medicine and University Hospital Cologne, Children's and Adolescents' Hospital, Cologne (L.T.W.), and the Division of Pediatric Nephrology, Center for Pediatrics and Adolescent Medicine, Heidelberg University Hospital, Heidelberg (O.M., F.S.) - both in Germany; and the Division of Pediatric Nephrology, Centro Materno Infantil do Norte, Centro Hospitalar Universitário do Porto, Porto, Portugal (A.C.A.).; Ozcakar ZB; From the Pediatric Nephrology, Dialysis, and Transplant Unit (W.M., G.P., J.S., G.M.) and the Pediatric Urology Unit (D.G.M.), Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico, and the Department of Clinical Sciences and Community Health, University of Milan (G.M.), Milan, the Department of General and Specialized Surgery for Women and Children, Università degli Studi della Campania 'Luigi Vanvitelli,' Naples (A.L.M., S.G., P.M.), the Institute for Maternal and Child Health-IRCCS Burlo Garofolo (M.P., E. Barbi) and the Department of Medical, Surgical, and Health Sciences, University of Trieste (E. Barbi), Trieste, Pediatric Nephrology and Dialysis, Pediatric Unit, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna (C.L.S., A.P.), the Nephrology and Dialysis Unit, Meyer Children's Hospital, Florence (F.B., M.M.), Pediatria C, Ospedale Donna Bambino, Verona (M.B.), the Pediatric Nephrology and Rheumatology Unit, Azienda Ospedaliera Universitaria Gaetano Martino, University of Messina, Messina (R.C.), the Nuclear Medicine Unit, Circolo Hospital and Macchi Foundation, Azienda Socio Sanitaria Territoriale Sette Laghi, Varese (D.D.P.), the Nuclear Medicine Unit, Department of Medicine, University Hospital of Padua (P.Z.), and the Pediatric Nephrology, Dialysis, and Transplantation Unit, Department of Women's and Children's Health, University of Padua (I.A.), Padua - all in Italy; the Department of Pediatric Nephrology, Başkent University Faculty of Medicine (E. Baskin, K.G.), and the Department of Pediatric Nephrology, Ankara University School of Medicine (F.Y., Z.B.O.), Ankara, the Department of Pediatric Nephrology and Pediatric Rheumatology, Pamukkale University School of Medicine, Denizli (S.Y.), and the Department of Pediatric Nephrology, Istanbul University-Cerrahpaşa, Cerrahpaşa School of Medicine, Istanbul (S.C.) - all in Turkey; the Pediatric Center, Institute of Clinical Medicine, Faculty of Medicine, Vilnius University, Vilnius (A.J., D.R.), and the Department of Radiology, Medical Academy, Lithuanian University of Health Sciences Kauno Klinikos, Kaunas (D.V.) - both in Lithuania; the Department of Pediatrics, Nephrology, and Hypertension, Medical University of Gdansk, Gdansk (A.Z., A.K.), the Department of Pediatrics and Nephrology, Medical University of Warsaw, Warsaw (G.K., A.S.), the Department of Pediatric Nephrology and Hypertension, Chair of Pediatrics, Pediatric Institute, Jagiellonian University Medical College, Krakow (D.D.), the Department of Pediatrics, Faculty of Medical Sciences in Zabrze, Medical University of Silesia in Katowice, Katowice (M.S.), the Department of Pediatrics and Nephrology, Medical University of Bialystok, Bialystok (K.T.-J.), and the Department of Pediatrics, Immunology, and Nephrology, Polish Mother's Memorial Hospital Research Institute, Lodz (M.T.) - all in Poland; the Department of Pediatric Nephrology, University Hospitals Leuven (D.M., S.D.R.), and PKD Research Group, Laboratory of Ion Channel Research, Department of Cellular and Molecular Medicine, KU Leuven (D.M.), Leuven, and the Division of Nephrology, Department of Pediatrics, University Hospital Center of Liège, Liège (J.L.) - all in Belgium; the Department of Pediatric Nephrology, University Hospital Vall d'Hebron, and Universidad Autónoma de Barcelona, Hospital Vall d'Hebron (G.A.), and Pediatric Nephrology, Hospital General de Granollers, Universitat Internacional de Catalunya (M.C.), Barcelona, and Hospital General Universitario Santa Lucía, Cartagena (J.E.C.S.) - all in Spain; the University of Cologne, Faculty of Medicine and University Hospital Cologne, Children's and Adolescents' Hospital, Cologne (L.T.W.), and the Division of Pediatric Nephrology, Center for Pediatrics and Adolescent Medicine, Heidelberg University Hospital, Heidelberg (O.M., F.S.) - both in Germany; and the Division of Pediatric Nephrology, Centro Materno Infantil do Norte, Centro Hospitalar Universitário do Porto, Porto, Portugal (A.C.A.).; Kranz A; From the Pediatric Nephrology, Dialysis, and Transplant Unit (W.M., G.P., J.S., G.M.) and the Pediatric Urology Unit (D.G.M.), Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico, and the Department of Clinical Sciences and Community Health, University of Milan (G.M.), Milan, the Department of General and Specialized Surgery for Women and Children, Università degli Studi della Campania 'Luigi Vanvitelli,' Naples (A.L.M., S.G., P.M.), the Institute for Maternal and Child Health-IRCCS Burlo Garofolo (M.P., E. Barbi) and the Department of Medical, Surgical, and Health Sciences, University of Trieste (E. Barbi), Trieste, Pediatric Nephrology and Dialysis, Pediatric Unit, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna (C.L.S., A.P.), the Nephrology and Dialysis Unit, Meyer Children's Hospital, Florence (F.B., M.M.), Pediatria C, Ospedale Donna Bambino, Verona (M.B.), the Pediatric Nephrology and Rheumatology Unit, Azienda Ospedaliera Universitaria Gaetano Martino, University of Messina, Messina (R.C.), the Nuclear Medicine Unit, Circolo Hospital and Macchi Foundation, Azienda Socio Sanitaria Territoriale Sette Laghi, Varese (D.D.P.), the Nuclear Medicine Unit, Department of Medicine, University Hospital of Padua (P.Z.), and the Pediatric Nephrology, Dialysis, and Transplantation Unit, Department of Women's and Children's Health, University of Padua (I.A.), Padua - all in Italy; the Department of Pediatric Nephrology, Başkent University Faculty of Medicine (E. Baskin, K.G.), and the Department of Pediatric Nephrology, Ankara University School of Medicine (F.Y., Z.B.O.), Ankara, the Department of Pediatric Nephrology and Pediatric Rheumatology, Pamukkale University School of Medicine, Denizli (S.Y.), and the Department of Pediatric Nephrology, Istanbul University-Cerrahpaşa, Cerrahpaşa School of Medicine, Istanbul (S.C.) - all in Turkey; the Pediatric Center, Institute of Clinical Medicine, Faculty of Medicine, Vilnius University, Vilnius (A.J., D.R.), and the Department of Radiology, Medical Academy, Lithuanian University of Health Sciences Kauno Klinikos, Kaunas (D.V.) - both in Lithuania; the Department of Pediatrics, Nephrology, and Hypertension, Medical University of Gdansk, Gdansk (A.Z., A.K.), the Department of Pediatrics and Nephrology, Medical University of Warsaw, Warsaw (G.K., A.S.), the Department of Pediatric Nephrology and Hypertension, Chair of Pediatrics, Pediatric Institute, Jagiellonian University Medical College, Krakow (D.D.), the Department of Pediatrics, Faculty of Medical Sciences in Zabrze, Medical University of Silesia in Katowice, Katowice (M.S.), the Department of Pediatrics and Nephrology, Medical University of Bialystok, Bialystok (K.T.-J.), and the Department of Pediatrics, Immunology, and Nephrology, Polish Mother's Memorial Hospital Research Institute, Lodz (M.T.) - all in Poland; the Department of Pediatric Nephrology, University Hospitals Leuven (D.M., S.D.R.), and PKD Research Group, Laboratory of Ion Channel Research, Department of Cellular and Molecular Medicine, KU Leuven (D.M.), Leuven, and the Division of Nephrology, Department of Pediatrics, University Hospital Center of Liège, Liège (J.L.) - all in Belgium; the Department of Pediatric Nephrology, University Hospital Vall d'Hebron, and Universidad Autónoma de Barcelona, Hospital Vall d'Hebron (G.A.), and Pediatric Nephrology, Hospital General de Granollers, Universitat Internacional de Catalunya (M.C.), Barcelona, and Hospital General Universitario Santa Lucía, Cartagena (J.E.C.S.) - all in Spain; the University of Cologne, Faculty of Medicine and University Hospital Cologne, Children's and Adolescents' Hospital, Cologne (L.T.W.), and the Division of Pediatric Nephrology, Center for Pediatrics and Adolescent Medicine, Heidelberg University Hospital, Heidelberg (O.M., F.S.) - both in Germany; and the Division of Pediatric Nephrology, Centro Materno Infantil do Norte, Centro Hospitalar Universitário do Porto, Porto, Portugal (A.C.A.).; Pasini A; From the Pediatric Nephrology, Dialysis, and Transplant Unit (W.M., G.P., J.S., G.M.) and the Pediatric Urology Unit (D.G.M.), Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico, and the Department of Clinical Sciences and Community Health, University of Milan (G.M.), Milan, the Department of General and Specialized Surgery for Women and Children, Università degli Studi della Campania 'Luigi Vanvitelli,' Naples (A.L.M., S.G., P.M.), the Institute for Maternal and Child Health-IRCCS Burlo Garofolo (M.P., E. Barbi) and the Department of Medical, Surgical, and Health Sciences, University of Trieste (E. Barbi), Trieste, Pediatric Nephrology and Dialysis, Pediatric Unit, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna (C.L.S., A.P.), the Nephrology and Dialysis Unit, Meyer Children's Hospital, Florence (F.B., M.M.), Pediatria C, Ospedale Donna Bambino, Verona (M.B.), the Pediatric Nephrology and Rheumatology Unit, Azienda Ospedaliera Universitaria Gaetano Martino, University of Messina, Messina (R.C.), the Nuclear Medicine Unit, Circolo Hospital and Macchi Foundation, Azienda Socio Sanitaria Territoriale Sette Laghi, Varese (D.D.P.), the Nuclear Medicine Unit, Department of Medicine, University Hospital of Padua (P.Z.), and the Pediatric Nephrology, Dialysis, and Transplantation Unit, Department of Women's and Children's Health, University of Padua (I.A.), Padua - all in Italy; the Department of Pediatric Nephrology, Başkent University Faculty of Medicine (E. Baskin, K.G.), and the Department of Pediatric Nephrology, Ankara University School of Medicine (F.Y., Z.B.O.), Ankara, the Department of Pediatric Nephrology and Pediatric Rheumatology, Pamukkale University School of Medicine, Denizli (S.Y.), and the Department of Pediatric Nephrology, Istanbul University-Cerrahpaşa, Cerrahpaşa School of Medicine, Istanbul (S.C.) - all in Turkey; the Pediatric Center, Institute of Clinical Medicine, Faculty of Medicine, Vilnius University, Vilnius (A.J., D.R.), and the Department of Radiology, Medical Academy, Lithuanian University of Health Sciences Kauno Klinikos, Kaunas (D.V.) - both in Lithuania; the Department of Pediatrics, Nephrology, and Hypertension, Medical University of Gdansk, Gdansk (A.Z., A.K.), the Department of Pediatrics and Nephrology, Medical University of Warsaw, Warsaw (G.K., A.S.), the Department of Pediatric Nephrology and Hypertension, Chair of Pediatrics, Pediatric Institute, Jagiellonian University Medical College, Krakow (D.D.), the Department of Pediatrics, Faculty of Medical Sciences in Zabrze, Medical University of Silesia in Katowice, Katowice (M.S.), the Department of Pediatrics and Nephrology, Medical University of Bialystok, Bialystok (K.T.-J.), and the Department of Pediatrics, Immunology, and Nephrology, Polish Mother's Memorial Hospital Research Institute, Lodz (M.T.) - all in Poland; the Department of Pediatric Nephrology, University Hospitals Leuven (D.M., S.D.R.), and PKD Research Group, Laboratory of Ion Channel Research, Department of Cellular and Molecular Medicine, KU Leuven (D.M.), Leuven, and the Division of Nephrology, Department of Pediatrics, University Hospital Center of Liège, Liège (J.L.) - all in Belgium; the Department of Pediatric Nephrology, University Hospital Vall d'Hebron, and Universidad Autónoma de Barcelona, Hospital Vall d'Hebron (G.A.), and Pediatric Nephrology, Hospital General de Granollers, Universitat Internacional de Catalunya (M.C.), Barcelona, and Hospital General Universitario Santa Lucía, Cartagena (J.E.C.S.) - all in Spain; the University of Cologne, Faculty of Medicine and University Hospital Cologne, Children's and Adolescents' Hospital, Cologne (L.T.W.), and the Division of Pediatric Nephrology, Center for Pediatrics and Adolescent Medicine, Heidelberg University Hospital, Heidelberg (O.M., F.S.) - both in Germany; and the Division of Pediatric Nephrology, Centro Materno Infantil do Norte, Centro Hospitalar Universitário do Porto, Porto, Portugal (A.C.A.).; Materassi M; From the Pediatric Nephrology, Dialysis, and Transplant Unit (W.M., G.P., J.S., G.M.) and the Pediatric Urology Unit (D.G.M.), Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico, and the Department of Clinical Sciences and Community Health, University of Milan (G.M.), Milan, the Department of General and Specialized Surgery for Women and Children, Università degli Studi della Campania 'Luigi Vanvitelli,' Naples (A.L.M., S.G., P.M.), the Institute for Maternal and Child Health-IRCCS Burlo Garofolo (M.P., E. Barbi) and the Department of Medical, Surgical, and Health Sciences, University of Trieste (E. Barbi), Trieste, Pediatric Nephrology and Dialysis, Pediatric Unit, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna (C.L.S., A.P.), the Nephrology and Dialysis Unit, Meyer Children's Hospital, Florence (F.B., M.M.), Pediatria C, Ospedale Donna Bambino, Verona (M.B.), the Pediatric Nephrology and Rheumatology Unit, Azienda Ospedaliera Universitaria Gaetano Martino, University of Messina, Messina (R.C.), the Nuclear Medicine Unit, Circolo Hospital and Macchi Foundation, Azienda Socio Sanitaria Territoriale Sette Laghi, Varese (D.D.P.), the Nuclear Medicine Unit, Department of Medicine, University Hospital of Padua (P.Z.), and the Pediatric Nephrology, Dialysis, and Transplantation Unit, Department of Women's and Children's Health, University of Padua (I.A.), Padua - all in Italy; the Department of Pediatric Nephrology, Başkent University Faculty of Medicine (E. Baskin, K.G.), and the Department of Pediatric Nephrology, Ankara University School of Medicine (F.Y., Z.B.O.), Ankara, the Department of Pediatric Nephrology and Pediatric Rheumatology, Pamukkale University School of Medicine, Denizli (S.Y.), and the Department of Pediatric Nephrology, Istanbul University-Cerrahpaşa, Cerrahpaşa School of Medicine, Istanbul (S.C.) - all in Turkey; the Pediatric Center, Institute of Clinical Medicine, Faculty of Medicine, Vilnius University, Vilnius (A.J., D.R.), and the Department of Radiology, Medical Academy, Lithuanian University of Health Sciences Kauno Klinikos, Kaunas (D.V.) - both in Lithuania; the Department of Pediatrics, Nephrology, and Hypertension, Medical University of Gdansk, Gdansk (A.Z., A.K.), the Department of Pediatrics and Nephrology, Medical University of Warsaw, Warsaw (G.K., A.S.), the Department of Pediatric Nephrology and Hypertension, Chair of Pediatrics, Pediatric Institute, Jagiellonian University Medical College, Krakow (D.D.), the Department of Pediatrics, Faculty of Medical Sciences in Zabrze, Medical University of Silesia in Katowice, Katowice (M.S.), the Department of Pediatrics and Nephrology, Medical University of Bialystok, Bialystok (K.T.-J.), and the Department of Pediatrics, Immunology, and Nephrology, Polish Mother's Memorial Hospital Research Institute, Lodz (M.T.) - all in Poland; the Department of Pediatric Nephrology, University Hospitals Leuven (D.M., S.D.R.), and PKD Research Group, Laboratory of Ion Channel Research, Department of Cellular and Molecular Medicine, KU Leuven (D.M.), Leuven, and the Division of Nephrology, Department of Pediatrics, University Hospital Center of Liège, Liège (J.L.) - all in Belgium; the Department of Pediatric Nephrology, University Hospital Vall d'Hebron, and Universidad Autónoma de Barcelona, Hospital Vall d'Hebron (G.A.), and Pediatric Nephrology, Hospital General de Granollers, Universitat Internacional de Catalunya (M.C.), Barcelona, and Hospital General Universitario Santa Lucía, Cartagena (J.E.C.S.) - all in Spain; the University of Cologne, Faculty of Medicine and University Hospital Cologne, Children's and Adolescents' Hospital, Cologne (L.T.W.), and the Division of Pediatric Nephrology, Center for Pediatrics and Adolescent Medicine, Heidelberg University Hospital, Heidelberg (O.M., F.S.) - both in Germany; and the Division of Pediatric Nephrology, Centro Materno Infantil do Norte, Centro Hospitalar Universitário do Porto, Porto, Portugal (A.C.A.).; De Rechter S; From the Pediatric Nephrology, Dialysis, and Transplant Unit (W.M., G.P., J.S., G.M.) and the Pediatric Urology Unit (D.G.M.), Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico, and the Department of Clinical Sciences and Community Health, University of Milan (G.M.), Milan, the Department of General and Specialized Surgery for Women and Children, Università degli Studi della Campania 'Luigi Vanvitelli,' Naples (A.L.M., S.G., P.M.), the Institute for Maternal and Child Health-IRCCS Burlo Garofolo (M.P., E. Barbi) and the Department of Medical, Surgical, and Health Sciences, University of Trieste (E. Barbi), Trieste, Pediatric Nephrology and Dialysis, Pediatric Unit, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna (C.L.S., A.P.), the Nephrology and Dialysis Unit, Meyer Children's Hospital, Florence (F.B., M.M.), Pediatria C, Ospedale Donna Bambino, Verona (M.B.), the Pediatric Nephrology and Rheumatology Unit, Azienda Ospedaliera Universitaria Gaetano Martino, University of Messina, Messina (R.C.), the Nuclear Medicine Unit, Circolo Hospital and Macchi Foundation, Azienda Socio Sanitaria Territoriale Sette Laghi, Varese (D.D.P.), the Nuclear Medicine Unit, Department of Medicine, University Hospital of Padua (P.Z.), and the Pediatric Nephrology, Dialysis, and Transplantation Unit, Department of Women's and Children's Health, University of Padua (I.A.), Padua - all in Italy; the Department of Pediatric Nephrology, Başkent University Faculty of Medicine (E. Baskin, K.G.), and the Department of Pediatric Nephrology, Ankara University School of Medicine (F.Y., Z.B.O.), Ankara, the Department of Pediatric Nephrology and Pediatric Rheumatology, Pamukkale University School of Medicine, Denizli (S.Y.), and the Department of Pediatric Nephrology, Istanbul University-Cerrahpaşa, Cerrahpaşa School of Medicine, Istanbul (S.C.) - all in Turkey; the Pediatric Center, Institute of Clinical Medicine, Faculty of Medicine, Vilnius University, Vilnius (A.J., D.R.), and the Department of Radiology, Medical Academy, Lithuanian University of Health Sciences Kauno Klinikos, Kaunas (D.V.) - both in Lithuania; the Department of Pediatrics, Nephrology, and Hypertension, Medical University of Gdansk, Gdansk (A.Z., A.K.), the Department of Pediatrics and Nephrology, Medical University of Warsaw, Warsaw (G.K., A.S.), the Department of Pediatric Nephrology and Hypertension, Chair of Pediatrics, Pediatric Institute, Jagiellonian University Medical College, Krakow (D.D.), the Department of Pediatrics, Faculty of Medical Sciences in Zabrze, Medical University of Silesia in Katowice, Katowice (M.S.), the Department of Pediatrics and Nephrology, Medical University of Bialystok, Bialystok (K.T.-J.), and the Department of Pediatrics, Immunology, and Nephrology, Polish Mother's Memorial Hospital Research Institute, Lodz (M.T.) - all in Poland; the Department of Pediatric Nephrology, University Hospitals Leuven (D.M., S.D.R.), and PKD Research Group, Laboratory of Ion Channel Research, Department of Cellular and Molecular Medicine, KU Leuven (D.M.), Leuven, and the Division of Nephrology, Department of Pediatrics, University Hospital Center of Liège, Liège (J.L.) - all in Belgium; the Department of Pediatric Nephrology, University Hospital Vall d'Hebron, and Universidad Autónoma de Barcelona, Hospital Vall d'Hebron (G.A.), and Pediatric Nephrology, Hospital General de Granollers, Universitat Internacional de Catalunya (M.C.), Barcelona, and Hospital General Universitario Santa Lucía, Cartagena (J.E.C.S.) - all in Spain; the University of Cologne, Faculty of Medicine and University Hospital Cologne, Children's and Adolescents' Hospital, Cologne (L.T.W.), and the Division of Pediatric Nephrology, Center for Pediatrics and Adolescent Medicine, Heidelberg University Hospital, Heidelberg (O.M., F.S.) - both in Germany; and the Division of Pediatric Nephrology, Centro Materno Infantil do Norte, Centro Hospitalar Universitário do Porto, Porto, Portugal (A.C.A.).; Ariceta G; From the Pediatric Nephrology, Dialysis, and Transplant Unit (W.M., G.P., J.S., G.M.) and the Pediatric Urology Unit (D.G.M.), Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico, and the Department of Clinical Sciences and Community Health, University of Milan (G.M.), Milan, the Department of General and Specialized Surgery for Women and Children, Università degli Studi della Campania 'Luigi Vanvitelli,' Naples (A.L.M., S.G., P.M.), the Institute for Maternal and Child Health-IRCCS Burlo Garofolo (M.P., E. Barbi) and the Department of Medical, Surgical, and Health Sciences, University of Trieste (E. Barbi), Trieste, Pediatric Nephrology and Dialysis, Pediatric Unit, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna (C.L.S., A.P.), the Nephrology and Dialysis Unit, Meyer Children's Hospital, Florence (F.B., M.M.), Pediatria C, Ospedale Donna Bambino, Verona (M.B.), the Pediatric Nephrology and Rheumatology Unit, Azienda Ospedaliera Universitaria Gaetano Martino, University of Messina, Messina (R.C.), the Nuclear Medicine Unit, Circolo Hospital and Macchi Foundation, Azienda Socio Sanitaria Territoriale Sette Laghi, Varese (D.D.P.), the Nuclear Medicine Unit, Department of Medicine, University Hospital of Padua (P.Z.), and the Pediatric Nephrology, Dialysis, and Transplantation Unit, Department of Women's and Children's Health, University of Padua (I.A.), Padua - all in Italy; the Department of Pediatric Nephrology, Başkent University Faculty of Medicine (E. Baskin, K.G.), and the Department of Pediatric Nephrology, Ankara University School of Medicine (F.Y., Z.B.O.), Ankara, the Department of Pediatric Nephrology and Pediatric Rheumatology, Pamukkale University School of Medicine, Denizli (S.Y.), and the Department of Pediatric Nephrology, Istanbul University-Cerrahpaşa, Cerrahpaşa School of Medicine, Istanbul (S.C.) - all in Turkey; the Pediatric Center, Institute of Clinical Medicine, Faculty of Medicine, Vilnius University, Vilnius (A.J., D.R.), and the Department of Radiology, Medical Academy, Lithuanian University of Health Sciences Kauno Klinikos, Kaunas (D.V.) - both in Lithuania; the Department of Pediatrics, Nephrology, and Hypertension, Medical University of Gdansk, Gdansk (A.Z., A.K.), the Department of Pediatrics and Nephrology, Medical University of Warsaw, Warsaw (G.K., A.S.), the Department of Pediatric Nephrology and Hypertension, Chair of Pediatrics, Pediatric Institute, Jagiellonian University Medical College, Krakow (D.D.), the Department of Pediatrics, Faculty of Medical Sciences in Zabrze, Medical University of Silesia in Katowice, Katowice (M.S.), the Department of Pediatrics and Nephrology, Medical University of Bialystok, Bialystok (K.T.-J.), and the Department of Pediatrics, Immunology, and Nephrology, Polish Mother's Memorial Hospital Research Institute, Lodz (M.T.) - all in Poland; the Department of Pediatric Nephrology, University Hospitals Leuven (D.M., S.D.R.), and PKD Research Group, Laboratory of Ion Channel Research, Department of Cellular and Molecular Medicine, KU Leuven (D.M.), Leuven, and the Division of Nephrology, Department of Pediatrics, University Hospital Center of Liège, Liège (J.L.) - all in Belgium; the Department of Pediatric Nephrology, University Hospital Vall d'Hebron, and Universidad Autónoma de Barcelona, Hospital Vall d'Hebron (G.A.), and Pediatric Nephrology, Hospital General de Granollers, Universitat Internacional de Catalunya (M.C.), Barcelona, and Hospital General Universitario Santa Lucía, Cartagena (J.E.C.S.) - all in Spain; the University of Cologne, Faculty of Medicine and University Hospital Cologne, Children's and Adolescents' Hospital, Cologne (L.T.W.), and the Division of Pediatric Nephrology, Center for Pediatrics and Adolescent Medicine, Heidelberg University Hospital, Heidelberg (O.M., F.S.) - both in Germany; and the Division of Pediatric Nephrology, Centro Materno Infantil do Norte, Centro Hospitalar Universitário do Porto, Porto, Portugal (A.C.A.).; Weber LT; From the Pediatric Nephrology, Dialysis, and Transplant Unit (W.M., G.P., J.S., G.M.) and the Pediatric Urology Unit (D.G.M.), Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico, and the Department of Clinical Sciences and Community Health, University of Milan (G.M.), Milan, the Department of General and Specialized Surgery for Women and Children, Università degli Studi della Campania 'Luigi Vanvitelli,' Naples (A.L.M., S.G., P.M.), the Institute for Maternal and Child Health-IRCCS Burlo Garofolo (M.P., E. Barbi) and the Department of Medical, Surgical, and Health Sciences, University of Trieste (E. Barbi), Trieste, Pediatric Nephrology and Dialysis, Pediatric Unit, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna (C.L.S., A.P.), the Nephrology and Dialysis Unit, Meyer Children's Hospital, Florence (F.B., M.M.), Pediatria C, Ospedale Donna Bambino, Verona (M.B.), the Pediatric Nephrology and Rheumatology Unit, Azienda Ospedaliera Universitaria Gaetano Martino, University of Messina, Messina (R.C.), the Nuclear Medicine Unit, Circolo Hospital and Macchi Foundation, Azienda Socio Sanitaria Territoriale Sette Laghi, Varese (D.D.P.), the Nuclear Medicine Unit, Department of Medicine, University Hospital of Padua (P.Z.), and the Pediatric Nephrology, Dialysis, and Transplantation Unit, Department of Women's and Children's Health, University of Padua (I.A.), Padua - all in Italy; the Department of Pediatric Nephrology, Başkent University Faculty of Medicine (E. Baskin, K.G.), and the Department of Pediatric Nephrology, Ankara University School of Medicine (F.Y., Z.B.O.), Ankara, the Department of Pediatric Nephrology and Pediatric Rheumatology, Pamukkale University School of Medicine, Denizli (S.Y.), and the Department of Pediatric Nephrology, Istanbul University-Cerrahpaşa, Cerrahpaşa School of Medicine, Istanbul (S.C.) - all in Turkey; the Pediatric Center, Institute of Clinical Medicine, Faculty of Medicine, Vilnius University, Vilnius (A.J., D.R.), and the Department of Radiology, Medical Academy, Lithuanian University of Health Sciences Kauno Klinikos, Kaunas (D.V.) - both in Lithuania; the Department of Pediatrics, Nephrology, and Hypertension, Medical University of Gdansk, Gdansk (A.Z., A.K.), the Department of Pediatrics and Nephrology, Medical University of Warsaw, Warsaw (G.K., A.S.), the Department of Pediatric Nephrology and Hypertension, Chair of Pediatrics, Pediatric Institute, Jagiellonian University Medical College, Krakow (D.D.), the Department of Pediatrics, Faculty of Medical Sciences in Zabrze, Medical University of Silesia in Katowice, Katowice (M.S.), the Department of Pediatrics and Nephrology, Medical University of Bialystok, Bialystok (K.T.-J.), and the Department of Pediatrics, Immunology, and Nephrology, Polish Mother's Memorial Hospital Research Institute, Lodz (M.T.) - all in Poland; the Department of Pediatric Nephrology, University Hospitals Leuven (D.M., S.D.R.), and PKD Research Group, Laboratory of Ion Channel Research, Department of Cellular and Molecular Medicine, KU Leuven (D.M.), Leuven, and the Division of Nephrology, Department of Pediatrics, University Hospital Center of Liège, Liège (J.L.) - all in Belgium; the Department of Pediatric Nephrology, University Hospital Vall d'Hebron, and Universidad Autónoma de Barcelona, Hospital Vall d'Hebron (G.A.), and Pediatric Nephrology, Hospital General de Granollers, Universitat Internacional de Catalunya (M.C.), Barcelona, and Hospital General Universitario Santa Lucía, Cartagena (J.E.C.S.) - all in Spain; the University of Cologne, Faculty of Medicine and University Hospital Cologne, Children's and Adolescents' Hospital, Cologne (L.T.W.), and the Division of Pediatric Nephrology, Center for Pediatrics and Adolescent Medicine, Heidelberg University Hospital, Heidelberg (O.M., F.S.) - both in Germany; and the Division of Pediatric Nephrology, Centro Materno Infantil do Norte, Centro Hospitalar Universitário do Porto, Porto, Portugal (A.C.A.).; Marzuillo P; From the Pediatric Nephrology, Dialysis, and Transplant Unit (W.M., G.P., J.S., G.M.) and the Pediatric Urology Unit (D.G.M.), Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico, and the Department of Clinical Sciences and Community Health, University of Milan (G.M.), Milan, the Department of General and Specialized Surgery for Women and Children, Università degli Studi della Campania 'Luigi Vanvitelli,' Naples (A.L.M., S.G., P.M.), the Institute for Maternal and Child Health-IRCCS Burlo Garofolo (M.P., E. Barbi) and the Department of Medical, Surgical, and Health Sciences, University of Trieste (E. Barbi), Trieste, Pediatric Nephrology and Dialysis, Pediatric Unit, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna (C.L.S., A.P.), the Nephrology and Dialysis Unit, Meyer Children's Hospital, Florence (F.B., M.M.), Pediatria C, Ospedale Donna Bambino, Verona (M.B.), the Pediatric Nephrology and Rheumatology Unit, Azienda Ospedaliera Universitaria Gaetano Martino, University of Messina, Messina (R.C.), the Nuclear Medicine Unit, Circolo Hospital and Macchi Foundation, Azienda Socio Sanitaria Territoriale Sette Laghi, Varese (D.D.P.), the Nuclear Medicine Unit, Department of Medicine, University Hospital of Padua (P.Z.), and the Pediatric Nephrology, Dialysis, and Transplantation Unit, Department of Women's and Children's Health, University of Padua (I.A.), Padua - all in Italy; the Department of Pediatric Nephrology, Başkent University Faculty of Medicine (E. Baskin, K.G.), and the Department of Pediatric Nephrology, Ankara University School of Medicine (F.Y., Z.B.O.), Ankara, the Department of Pediatric Nephrology and Pediatric Rheumatology, Pamukkale University School of Medicine, Denizli (S.Y.), and the Department of Pediatric Nephrology, Istanbul University-Cerrahpaşa, Cerrahpaşa School of Medicine, Istanbul (S.C.) - all in Turkey; the Pediatric Center, Institute of Clinical Medicine, Faculty of Medicine, Vilnius University, Vilnius (A.J., D.R.), and the Department of Radiology, Medical Academy, Lithuanian University of Health Sciences Kauno Klinikos, Kaunas (D.V.) - both in Lithuania; the Department of Pediatrics, Nephrology, and Hypertension, Medical University of Gdansk, Gdansk (A.Z., A.K.), the Department of Pediatrics and Nephrology, Medical University of Warsaw, Warsaw (G.K., A.S.), the Department of Pediatric Nephrology and Hypertension, Chair of Pediatrics, Pediatric Institute, Jagiellonian University Medical College, Krakow (D.D.), the Department of Pediatrics, Faculty of Medical Sciences in Zabrze, Medical University of Silesia in Katowice, Katowice (M.S.), the Department of Pediatrics and Nephrology, Medical University of Bialystok, Bialystok (K.T.-J.), and the Department of Pediatrics, Immunology, and Nephrology, Polish Mother's Memorial Hospital Research Institute, Lodz (M.T.) - all in Poland; the Department of Pediatric Nephrology, University Hospitals Leuven (D.M., S.D.R.), and PKD Research Group, Laboratory of Ion Channel Research, Department of Cellular and Molecular Medicine, KU Leuven (D.M.), Leuven, and the Division of Nephrology, Department of Pediatrics, University Hospital Center of Liège, Liège (J.L.) - all in Belgium; the Department of Pediatric Nephrology, University Hospital Vall d'Hebron, and Universidad Autónoma de Barcelona, Hospital Vall d'Hebron (G.A.), and Pediatric Nephrology, Hospital General de Granollers, Universitat Internacional de Catalunya (M.C.), Barcelona, and Hospital General Universitario Santa Lucía, Cartagena (J.E.C.S.) - all in Spain; the University of Cologne, Faculty of Medicine and University Hospital Cologne, Children's and Adolescents' Hospital, Cologne (L.T.W.), and the Division of Pediatric Nephrology, Center for Pediatrics and Adolescent Medicine, Heidelberg University Hospital, Heidelberg (O.M., F.S.) - both in Germany; and the Division of Pediatric Nephrology, Centro Materno Infantil do Norte, Centro Hospitalar Universitário do Porto, Porto, Portugal (A.C.A.).; Alberici I; From the Pediatric Nephrology, Dialysis, and Transplant Unit (W.M., G.P., J.S., G.M.) and the Pediatric Urology Unit (D.G.M.), Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico, and the Department of Clinical Sciences and Community Health, University of Milan (G.M.), Milan, the Department of General and Specialized Surgery for Women and Children, Università degli Studi della Campania 'Luigi Vanvitelli,' Naples (A.L.M., S.G., P.M.), the Institute for Maternal and Child Health-IRCCS Burlo Garofolo (M.P., E. Barbi) and the Department of Medical, Surgical, and Health Sciences, University of Trieste (E. Barbi), Trieste, Pediatric Nephrology and Dialysis, Pediatric Unit, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna (C.L.S., A.P.), the Nephrology and Dialysis Unit, Meyer Children's Hospital, Florence (F.B., M.M.), Pediatria C, Ospedale Donna Bambino, Verona (M.B.), the Pediatric Nephrology and Rheumatology Unit, Azienda Ospedaliera Universitaria Gaetano Martino, University of Messina, Messina (R.C.), the Nuclear Medicine Unit, Circolo Hospital and Macchi Foundation, Azienda Socio Sanitaria Territoriale Sette Laghi, Varese (D.D.P.), the Nuclear Medicine Unit, Department of Medicine, University Hospital of Padua (P.Z.), and the Pediatric Nephrology, Dialysis, and Transplantation Unit, Department of Women's and Children's Health, University of Padua (I.A.), Padua - all in Italy; the Department of Pediatric Nephrology, Başkent University Faculty of Medicine (E. Baskin, K.G.), and the Department of Pediatric Nephrology, Ankara University School of Medicine (F.Y., Z.B.O.), Ankara, the Department of Pediatric Nephrology and Pediatric Rheumatology, Pamukkale University School of Medicine, Denizli (S.Y.), and the Department of Pediatric Nephrology, Istanbul University-Cerrahpaşa, Cerrahpaşa School of Medicine, Istanbul (S.C.) - all in Turkey; the Pediatric Center, Institute of Clinical Medicine, Faculty of Medicine, Vilnius University, Vilnius (A.J., D.R.), and the Department of Radiology, Medical Academy, Lithuanian University of Health Sciences Kauno Klinikos, Kaunas (D.V.) - both in Lithuania; the Department of Pediatrics, Nephrology, and Hypertension, Medical University of Gdansk, Gdansk (A.Z., A.K.), the Department of Pediatrics and Nephrology, Medical University of Warsaw, Warsaw (G.K., A.S.), the Department of Pediatric Nephrology and Hypertension, Chair of Pediatrics, Pediatric Institute, Jagiellonian University Medical College, Krakow (D.D.), the Department of Pediatrics, Faculty of Medical Sciences in Zabrze, Medical University of Silesia in Katowice, Katowice (M.S.), the Department of Pediatrics and Nephrology, Medical University of Bialystok, Bialystok (K.T.-J.), and the Department of Pediatrics, Immunology, and Nephrology, Polish Mother's Memorial Hospital Research Institute, Lodz (M.T.) - all in Poland; the Department of Pediatric Nephrology, University Hospitals Leuven (D.M., S.D.R.), and PKD Research Group, Laboratory of Ion Channel Research, Department of Cellular and Molecular Medicine, KU Leuven (D.M.), Leuven, and the Division of Nephrology, Department of Pediatrics, University Hospital Center of Liège, Liège (J.L.) - all in Belgium; the Department of Pediatric Nephrology, University Hospital Vall d'Hebron, and Universidad Autónoma de Barcelona, Hospital Vall d'Hebron (G.A.), and Pediatric Nephrology, Hospital General de Granollers, Universitat Internacional de Catalunya (M.C.), Barcelona, and Hospital General Universitario Santa Lucía, Cartagena (J.E.C.S.) - all in Spain; the University of Cologne, Faculty of Medicine and University Hospital Cologne, Children's and Adolescents' Hospital, Cologne (L.T.W.), and the Division of Pediatric Nephrology, Center for Pediatrics and Adolescent Medicine, Heidelberg University Hospital, Heidelberg (O.M., F.S.) - both in Germany; and the Division of Pediatric Nephrology, Centro Materno Infantil do Norte, Centro Hospitalar Universitário do Porto, Porto, Portugal (A.C.A.).; Taranta-Janusz K; From the Pediatric Nephrology, Dialysis, and Transplant Unit (W.M., G.P., J.S., G.M.) and the Pediatric Urology Unit (D.G.M.), Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico, and the Department of Clinical Sciences and Community Health, University of Milan (G.M.), Milan, the Department of General and Specialized Surgery for Women and Children, Università degli Studi della Campania 'Luigi Vanvitelli,' Naples (A.L.M., S.G., P.M.), the Institute for Maternal and Child Health-IRCCS Burlo Garofolo (M.P., E. Barbi) and the Department of Medical, Surgical, and Health Sciences, University of Trieste (E. Barbi), Trieste, Pediatric Nephrology and Dialysis, Pediatric Unit, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna (C.L.S., A.P.), the Nephrology and Dialysis Unit, Meyer Children's Hospital, Florence (F.B., M.M.), Pediatria C, Ospedale Donna Bambino, Verona (M.B.), the Pediatric Nephrology and Rheumatology Unit, Azienda Ospedaliera Universitaria Gaetano Martino, University of Messina, Messina (R.C.), the Nuclear Medicine Unit, Circolo Hospital and Macchi Foundation, Azienda Socio Sanitaria Territoriale Sette Laghi, Varese (D.D.P.), the Nuclear Medicine Unit, Department of Medicine, University Hospital of Padua (P.Z.), and the Pediatric Nephrology, Dialysis, and Transplantation Unit, Department of Women's and Children's Health, University of Padua (I.A.), Padua - all in Italy; the Department of Pediatric Nephrology, Başkent University Faculty of Medicine (E. Baskin, K.G.), and the Department of Pediatric Nephrology, Ankara University School of Medicine (F.Y., Z.B.O.), Ankara, the Department of Pediatric Nephrology and Pediatric Rheumatology, Pamukkale University School of Medicine, Denizli (S.Y.), and the Department of Pediatric Nephrology, Istanbul University-Cerrahpaşa, Cerrahpaşa School of Medicine, Istanbul (S.C.) - all in Turkey; the Pediatric Center, Institute of Clinical Medicine, Faculty of Medicine, Vilnius University, Vilnius (A.J., D.R.), and the Department of Radiology, Medical Academy, Lithuanian University of Health Sciences Kauno Klinikos, Kaunas (D.V.) - both in Lithuania; the Department of Pediatrics, Nephrology, and Hypertension, Medical University of Gdansk, Gdansk (A.Z., A.K.), the Department of Pediatrics and Nephrology, Medical University of Warsaw, Warsaw (G.K., A.S.), the Department of Pediatric Nephrology and Hypertension, Chair of Pediatrics, Pediatric Institute, Jagiellonian University Medical College, Krakow (D.D.), the Department of Pediatrics, Faculty of Medical Sciences in Zabrze, Medical University of Silesia in Katowice, Katowice (M.S.), the Department of Pediatrics and Nephrology, Medical University of Bialystok, Bialystok (K.T.-J.), and the Department of Pediatrics, Immunology, and Nephrology, Polish Mother's Memorial Hospital Research Institute, Lodz (M.T.) - all in Poland; the Department of Pediatric Nephrology, University Hospitals Leuven (D.M., S.D.R.), and PKD Research Group, Laboratory of Ion Channel Research, Department of Cellular and Molecular Medicine, KU Leuven (D.M.), Leuven, and the Division of Nephrology, Department of Pediatrics, University Hospital Center of Liège, Liège (J.L.) - all in Belgium; the Department of Pediatric Nephrology, University Hospital Vall d'Hebron, and Universidad Autónoma de Barcelona, Hospital Vall d'Hebron (G.A.), and Pediatric Nephrology, Hospital General de Granollers, Universitat Internacional de Catalunya (M.C.), Barcelona, and Hospital General Universitario Santa Lucía, Cartagena (J.E.C.S.) - all in Spain; the University of Cologne, Faculty of Medicine and University Hospital Cologne, Children's and Adolescents' Hospital, Cologne (L.T.W.), and the Division of Pediatric Nephrology, Center for Pediatrics and Adolescent Medicine, Heidelberg University Hospital, Heidelberg (O.M., F.S.) - both in Germany; and the Division of Pediatric Nephrology, Centro Materno Infantil do Norte, Centro Hospitalar Universitário do Porto, Porto, Portugal (A.C.A.).; Caldas Afonso A; From the Pediatric Nephrology, Dialysis, and Transplant Unit (W.M., G.P., J.S., G.M.) and the Pediatric Urology Unit (D.G.M.), Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico, and the Department of Clinical Sciences and Community Health, University of Milan (G.M.), Milan, the Department of General and Specialized Surgery for Women and Children, Università degli Studi della Campania 'Luigi Vanvitelli,' Naples (A.L.M., S.G., P.M.), the Institute for Maternal and Child Health-IRCCS Burlo Garofolo (M.P., E. Barbi) and the Department of Medical, Surgical, and Health Sciences, University of Trieste (E. Barbi), Trieste, Pediatric Nephrology and Dialysis, Pediatric Unit, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna (C.L.S., A.P.), the Nephrology and Dialysis Unit, Meyer Children's Hospital, Florence (F.B., M.M.), Pediatria C, Ospedale Donna Bambino, Verona (M.B.), the Pediatric Nephrology and Rheumatology Unit, Azienda Ospedaliera Universitaria Gaetano Martino, University of Messina, Messina (R.C.), the Nuclear Medicine Unit, Circolo Hospital and Macchi Foundation, Azienda Socio Sanitaria Territoriale Sette Laghi, Varese (D.D.P.), the Nuclear Medicine Unit, Department of Medicine, University Hospital of Padua (P.Z.), and the Pediatric Nephrology, Dialysis, and Transplantation Unit, Department of Women's and Children's Health, University of Padua (I.A.), Padua - all in Italy; the Department of Pediatric Nephrology, Başkent University Faculty of Medicine (E. Baskin, K.G.), and the Department of Pediatric Nephrology, Ankara University School of Medicine (F.Y., Z.B.O.), Ankara, the Department of Pediatric Nephrology and Pediatric Rheumatology, Pamukkale University School of Medicine, Denizli (S.Y.), and the Department of Pediatric Nephrology, Istanbul University-Cerrahpaşa, Cerrahpaşa School of Medicine, Istanbul (S.C.) - all in Turkey; the Pediatric Center, Institute of Clinical Medicine, Faculty of Medicine, Vilnius University, Vilnius (A.J., D.R.), and the Department of Radiology, Medical Academy, Lithuanian University of Health Sciences Kauno Klinikos, Kaunas (D.V.) - both in Lithuania; the Department of Pediatrics, Nephrology, and Hypertension, Medical University of Gdansk, Gdansk (A.Z., A.K.), the Department of Pediatrics and Nephrology, Medical University of Warsaw, Warsaw (G.K., A.S.), the Department of Pediatric Nephrology and Hypertension, Chair of Pediatrics, Pediatric Institute, Jagiellonian University Medical College, Krakow (D.D.), the Department of Pediatrics, Faculty of Medical Sciences in Zabrze, Medical University of Silesia in Katowice, Katowice (M.S.), the Department of Pediatrics and Nephrology, Medical University of Bialystok, Bialystok (K.T.-J.), and the Department of Pediatrics, Immunology, and Nephrology, Polish Mother's Memorial Hospital Research Institute, Lodz (M.T.) - all in Poland; the Department of Pediatric Nephrology, University Hospitals Leuven (D.M., S.D.R.), and PKD Research Group, Laboratory of Ion Channel Research, Department of Cellular and Molecular Medicine, KU Leuven (D.M.), Leuven, and the Division of Nephrology, Department of Pediatrics, University Hospital Center of Liège, Liège (J.L.) - all in Belgium; the Department of Pediatric Nephrology, University Hospital Vall d'Hebron, and Universidad Autónoma de Barcelona, Hospital Vall d'Hebron (G.A.), and Pediatric Nephrology, Hospital General de Granollers, Universitat Internacional de Catalunya (M.C.), Barcelona, and Hospital General Universitario Santa Lucía, Cartagena (J.E.C.S.) - all in Spain; the University of Cologne, Faculty of Medicine and University Hospital Cologne, Children's and Adolescents' Hospital, Cologne (L.T.W.), and the Division of Pediatric Nephrology, Center for Pediatrics and Adolescent Medicine, Heidelberg University Hospital, Heidelberg (O.M., F.S.) - both in Germany; and the Division of Pediatric Nephrology, Centro Materno Infantil do Norte, Centro Hospitalar Universitário do Porto, Porto, Portugal (A.C.A.).; Tkaczyk M; From the Pediatric Nephrology, Dialysis, and Transplant Unit (W.M., G.P., J.S., G.M.) and the Pediatric Urology Unit (D.G.M.), Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico, and the Department of Clinical Sciences and Community Health, University of Milan (G.M.), Milan, the Department of General and Specialized Surgery for Women and Children, Università degli Studi della Campania 'Luigi Vanvitelli,' Naples (A.L.M., S.G., P.M.), the Institute for Maternal and Child Health-IRCCS Burlo Garofolo (M.P., E. Barbi) and the Department of Medical, Surgical, and Health Sciences, University of Trieste (E. Barbi), Trieste, Pediatric Nephrology and Dialysis, Pediatric Unit, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna (C.L.S., A.P.), the Nephrology and Dialysis Unit, Meyer Children's Hospital, Florence (F.B., M.M.), Pediatria C, Ospedale Donna Bambino, Verona (M.B.), the Pediatric Nephrology and Rheumatology Unit, Azienda Ospedaliera Universitaria Gaetano Martino, University of Messina, Messina (R.C.), the Nuclear Medicine Unit, Circolo Hospital and Macchi Foundation, Azienda Socio Sanitaria Territoriale Sette Laghi, Varese (D.D.P.), the Nuclear Medicine Unit, Department of Medicine, University Hospital of Padua (P.Z.), and the Pediatric Nephrology, Dialysis, and Transplantation Unit, Department of Women's and Children's Health, University of Padua (I.A.), Padua - all in Italy; the Department of Pediatric Nephrology, Başkent University Faculty of Medicine (E. Baskin, K.G.), and the Department of Pediatric Nephrology, Ankara University School of Medicine (F.Y., Z.B.O.), Ankara, the Department of Pediatric Nephrology and Pediatric Rheumatology, Pamukkale University School of Medicine, Denizli (S.Y.), and the Department of Pediatric Nephrology, Istanbul University-Cerrahpaşa, Cerrahpaşa School of Medicine, Istanbul (S.C.) - all in Turkey; the Pediatric Center, Institute of Clinical Medicine, Faculty of Medicine, Vilnius University, Vilnius (A.J., D.R.), and the Department of Radiology, Medical Academy, Lithuanian University of Health Sciences Kauno Klinikos, Kaunas (D.V.) - both in Lithuania; the Department of Pediatrics, Nephrology, and Hypertension, Medical University of Gdansk, Gdansk (A.Z., A.K.), the Department of Pediatrics and Nephrology, Medical University of Warsaw, Warsaw (G.K., A.S.), the Department of Pediatric Nephrology and Hypertension, Chair of Pediatrics, Pediatric Institute, Jagiellonian University Medical College, Krakow (D.D.), the Department of Pediatrics, Faculty of Medical Sciences in Zabrze, Medical University of Silesia in Katowice, Katowice (M.S.), the Department of Pediatrics and Nephrology, Medical University of Bialystok, Bialystok (K.T.-J.), and the Department of Pediatrics, Immunology, and Nephrology, Polish Mother's Memorial Hospital Research Institute, Lodz (M.T.) - all in Poland; the Department of Pediatric Nephrology, University Hospitals Leuven (D.M., S.D.R.), and PKD Research Group, Laboratory of Ion Channel Research, Department of Cellular and Molecular Medicine, KU Leuven (D.M.), Leuven, and the Division of Nephrology, Department of Pediatrics, University Hospital Center of Liège, Liège (J.L.) - all in Belgium; the Department of Pediatric Nephrology, University Hospital Vall d'Hebron, and Universidad Autónoma de Barcelona, Hospital Vall d'Hebron (G.A.), and Pediatric Nephrology, Hospital General de Granollers, Universitat Internacional de Catalunya (M.C.), Barcelona, and Hospital General Universitario Santa Lucía, Cartagena (J.E.C.S.) - all in Spain; the University of Cologne, Faculty of Medicine and University Hospital Cologne, Children's and Adolescents' Hospital, Cologne (L.T.W.), and the Division of Pediatric Nephrology, Center for Pediatrics and Adolescent Medicine, Heidelberg University Hospital, Heidelberg (O.M., F.S.) - both in Germany; and the Division of Pediatric Nephrology, Centro Materno Infantil do Norte, Centro Hospitalar Universitário do Porto, Porto, Portugal (A.C.A.).; Català M; From the Pediatric Nephrology, Dialysis, and Transplant Unit (W.M., G.P., J.S., G.M.) and the Pediatric Urology Unit (D.G.M.), Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico, and the Department of Clinical Sciences and Community Health, University of Milan (G.M.), Milan, the Department of General and Specialized Surgery for Women and Children, Università degli Studi della Campania 'Luigi Vanvitelli,' Naples (A.L.M., S.G., P.M.), the Institute for Maternal and Child Health-IRCCS Burlo Garofolo (M.P., E. Barbi) and the Department of Medical, Surgical, and Health Sciences, University of Trieste (E. Barbi), Trieste, Pediatric Nephrology and Dialysis, Pediatric Unit, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna (C.L.S., A.P.), the Nephrology and Dialysis Unit, Meyer Children's Hospital, Florence (F.B., M.M.), Pediatria C, Ospedale Donna Bambino, Verona (M.B.), the Pediatric Nephrology and Rheumatology Unit, Azienda Ospedaliera Universitaria Gaetano Martino, University of Messina, Messina (R.C.), the Nuclear Medicine Unit, Circolo Hospital and Macchi Foundation, Azienda Socio Sanitaria Territoriale Sette Laghi, Varese (D.D.P.), the Nuclear Medicine Unit, Department of Medicine, University Hospital of Padua (P.Z.), and the Pediatric Nephrology, Dialysis, and Transplantation Unit, Department of Women's and Children's Health, University of Padua (I.A.), Padua - all in Italy; the Department of Pediatric Nephrology, Başkent University Faculty of Medicine (E. Baskin, K.G.), and the Department of Pediatric Nephrology, Ankara University School of Medicine (F.Y., Z.B.O.), Ankara, the Department of Pediatric Nephrology and Pediatric Rheumatology, Pamukkale University School of Medicine, Denizli (S.Y.), and the Department of Pediatric Nephrology, Istanbul University-Cerrahpaşa, Cerrahpaşa School of Medicine, Istanbul (S.C.) - all in Turkey; the Pediatric Center, Institute of Clinical Medicine, Faculty of Medicine, Vilnius University, Vilnius (A.J., D.R.), and the Department of Radiology, Medical Academy, Lithuanian University of Health Sciences Kauno Klinikos, Kaunas (D.V.) - both in Lithuania; the Department of Pediatrics, Nephrology, and Hypertension, Medical University of Gdansk, Gdansk (A.Z., A.K.), the Department of Pediatrics and Nephrology, Medical University of Warsaw, Warsaw (G.K., A.S.), the Department of Pediatric Nephrology and Hypertension, Chair of Pediatrics, Pediatric Institute, Jagiellonian University Medical College, Krakow (D.D.), the Department of Pediatrics, Faculty of Medical Sciences in Zabrze, Medical University of Silesia in Katowice, Katowice (M.S.), the Department of Pediatrics and Nephrology, Medical University of Bialystok, Bialystok (K.T.-J.), and the Department of Pediatrics, Immunology, and Nephrology, Polish Mother's Memorial Hospital Research Institute, Lodz (M.T.) - all in Poland; the Department of Pediatric Nephrology, University Hospitals Leuven (D.M., S.D.R.), and PKD Research Group, Laboratory of Ion Channel Research, Department of Cellular and Molecular Medicine, KU Leuven (D.M.), Leuven, and the Division of Nephrology, Department of Pediatrics, University Hospital Center of Liège, Liège (J.L.) - all in Belgium; the Department of Pediatric Nephrology, University Hospital Vall d'Hebron, and Universidad Autónoma de Barcelona, Hospital Vall d'Hebron (G.A.), and Pediatric Nephrology, Hospital General de Granollers, Universitat Internacional de Catalunya (M.C.), Barcelona, and Hospital General Universitario Santa Lucía, Cartagena (J.E.C.S.) - all in Spain; the University of Cologne, Faculty of Medicine and University Hospital Cologne, Children's and Adolescents' Hospital, Cologne (L.T.W.), and the Division of Pediatric Nephrology, Center for Pediatrics and Adolescent Medicine, Heidelberg University Hospital, Heidelberg (O.M., F.S.) - both in Germany; and the Division of Pediatric Nephrology, Centro Materno Infantil do Norte, Centro Hospitalar Universitário do Porto, Porto, Portugal (A.C.A.).; Cabrera Sevilla JE; From the Pediatric Nephrology, Dialysis, and Transplant Unit (W.M., G.P., J.S., G.M.) and the Pediatric Urology Unit (D.G.M.), Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico, and the Department of Clinical Sciences and Community Health, University of Milan (G.M.), Milan, the Department of General and Specialized Surgery for Women and Children, Università degli Studi della Campania 'Luigi Vanvitelli,' Naples (A.L.M., S.G., P.M.), the Institute for Maternal and Child Health-IRCCS Burlo Garofolo (M.P., E. Barbi) and the Department of Medical, Surgical, and Health Sciences, University of Trieste (E. Barbi), Trieste, Pediatric Nephrology and Dialysis, Pediatric Unit, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna (C.L.S., A.P.), the Nephrology and Dialysis Unit, Meyer Children's Hospital, Florence (F.B., M.M.), Pediatria C, Ospedale Donna Bambino, Verona (M.B.), the Pediatric Nephrology and Rheumatology Unit, Azienda Ospedaliera Universitaria Gaetano Martino, University of Messina, Messina (R.C.), the Nuclear Medicine Unit, Circolo Hospital and Macchi Foundation, Azienda Socio Sanitaria Territoriale Sette Laghi, Varese (D.D.P.), the Nuclear Medicine Unit, Department of Medicine, University Hospital of Padua (P.Z.), and the Pediatric Nephrology, Dialysis, and Transplantation Unit, Department of Women's and Children's Health, University of Padua (I.A.), Padua - all in Italy; the Department of Pediatric Nephrology, Başkent University Faculty of Medicine (E. Baskin, K.G.), and the Department of Pediatric Nephrology, Ankara University School of Medicine (F.Y., Z.B.O.), Ankara, the Department of Pediatric Nephrology and Pediatric Rheumatology, Pamukkale University School of Medicine, Denizli (S.Y.), and the Department of Pediatric Nephrology, Istanbul University-Cerrahpaşa, Cerrahpaşa School of Medicine, Istanbul (S.C.) - all in Turkey; the Pediatric Center, Institute of Clinical Medicine, Faculty of Medicine, Vilnius University, Vilnius (A.J., D.R.), and the Department of Radiology, Medical Academy, Lithuanian University of Health Sciences Kauno Klinikos, Kaunas (D.V.) - both in Lithuania; the Department of Pediatrics, Nephrology, and Hypertension, Medical University of Gdansk, Gdansk (A.Z., A.K.), the Department of Pediatrics and Nephrology, Medical University of Warsaw, Warsaw (G.K., A.S.), the Department of Pediatric Nephrology and Hypertension, Chair of Pediatrics, Pediatric Institute, Jagiellonian University Medical College, Krakow (D.D.), the Department of Pediatrics, Faculty of Medical Sciences in Zabrze, Medical University of Silesia in Katowice, Katowice (M.S.), the Department of Pediatrics and Nephrology, Medical University of Bialystok, Bialystok (K.T.-J.), and the Department of Pediatrics, Immunology, and Nephrology, Polish Mother's Memorial Hospital Research Institute, Lodz (M.T.) - all in Poland; the Department of Pediatric Nephrology, University Hospitals Leuven (D.M., S.D.R.), and PKD Research Group, Laboratory of Ion Channel Research, Department of Cellular and Molecular Medicine, KU Leuven (D.M.), Leuven, and the Division of Nephrology, Department of Pediatrics, University Hospital Center of Liège, Liège (J.L.) - all in Belgium; the Department of Pediatric Nephrology, University Hospital Vall d'Hebron, and Universidad Autónoma de Barcelona, Hospital Vall d'Hebron (G.A.), and Pediatric Nephrology, Hospital General de Granollers, Universitat Internacional de Catalunya (M.C.), Barcelona, and Hospital General Universitario Santa Lucía, Cartagena (J.E.C.S.) - all in Spain; the University of Cologne, Faculty of Medicine and University Hospital Cologne, Children's and Adolescents' Hospital, Cologne (L.T.W.), and the Division of Pediatric Nephrology, Center for Pediatrics and Adolescent Medicine, Heidelberg University Hospital, Heidelberg (O.M., F.S.) - both in Germany; and the Division of Pediatric Nephrology, Centro Materno Infantil do Norte, Centro Hospitalar Universitário do Porto, Porto, Portugal (A.C.A.).; Mehls O; From the Pediatric Nephrology, Dialysis, and Transplant Unit (W.M., G.P., J.S., G.M.) and the Pediatric Urology Unit (D.G.M.), Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico, and the Department of Clinical Sciences and Community Health, University of Milan (G.M.), Milan, the Department of General and Specialized Surgery for Women and Children, Università degli Studi della Campania 'Luigi Vanvitelli,' Naples (A.L.M., S.G., P.M.), the Institute for Maternal and Child Health-IRCCS Burlo Garofolo (M.P., E. Barbi) and the Department of Medical, Surgical, and Health Sciences, University of Trieste (E. Barbi), Trieste, Pediatric Nephrology and Dialysis, Pediatric Unit, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna (C.L.S., A.P.), the Nephrology and Dialysis Unit, Meyer Children's Hospital, Florence (F.B., M.M.), Pediatria C, Ospedale Donna Bambino, Verona (M.B.), the Pediatric Nephrology and Rheumatology Unit, Azienda Ospedaliera Universitaria Gaetano Martino, University of Messina, Messina (R.C.), the Nuclear Medicine Unit, Circolo Hospital and Macchi Foundation, Azienda Socio Sanitaria Territoriale Sette Laghi, Varese (D.D.P.), the Nuclear Medicine Unit, Department of Medicine, University Hospital of Padua (P.Z.), and the Pediatric Nephrology, Dialysis, and Transplantation Unit, Department of Women's and Children's Health, University of Padua (I.A.), Padua - all in Italy; the Department of Pediatric Nephrology, Başkent University Faculty of Medicine (E. Baskin, K.G.), and the Department of Pediatric Nephrology, Ankara University School of Medicine (F.Y., Z.B.O.), Ankara, the Department of Pediatric Nephrology and Pediatric Rheumatology, Pamukkale University School of Medicine, Denizli (S.Y.), and the Department of Pediatric Nephrology, Istanbul University-Cerrahpaşa, Cerrahpaşa School of Medicine, Istanbul (S.C.) - all in Turkey; the Pediatric Center, Institute of Clinical Medicine, Faculty of Medicine, Vilnius University, Vilnius (A.J., D.R.), and the Department of Radiology, Medical Academy, Lithuanian University of Health Sciences Kauno Klinikos, Kaunas (D.V.) - both in Lithuania; the Department of Pediatrics, Nephrology, and Hypertension, Medical University of Gdansk, Gdansk (A.Z., A.K.), the Department of Pediatrics and Nephrology, Medical University of Warsaw, Warsaw (G.K., A.S.), the Department of Pediatric Nephrology and Hypertension, Chair of Pediatrics, Pediatric Institute, Jagiellonian University Medical College, Krakow (D.D.), the Department of Pediatrics, Faculty of Medical Sciences in Zabrze, Medical University of Silesia in Katowice, Katowice (M.S.), the Department of Pediatrics and Nephrology, Medical University of Bialystok, Bialystok (K.T.-J.), and the Department of Pediatrics, Immunology, and Nephrology, Polish Mother's Memorial Hospital Research Institute, Lodz (M.T.) - all in Poland; the Department of Pediatric Nephrology, University Hospitals Leuven (D.M., S.D.R.), and PKD Research Group, Laboratory of Ion Channel Research, Department of Cellular and Molecular Medicine, KU Leuven (D.M.), Leuven, and the Division of Nephrology, Department of Pediatrics, University Hospital Center of Liège, Liège (J.L.) - all in Belgium; the Department of Pediatric Nephrology, University Hospital Vall d'Hebron, and Universidad Autónoma de Barcelona, Hospital Vall d'Hebron (G.A.), and Pediatric Nephrology, Hospital General de Granollers, Universitat Internacional de Catalunya (M.C.), Barcelona, and Hospital General Universitario Santa Lucía, Cartagena (J.E.C.S.) - all in Spain; the University of Cologne, Faculty of Medicine and University Hospital Cologne, Children's and Adolescents' Hospital, Cologne (L.T.W.), and the Division of Pediatric Nephrology, Center for Pediatrics and Adolescent Medicine, Heidelberg University Hospital, Heidelberg (O.M., F.S.) - both in Germany; and the Division of Pediatric Nephrology, Centro Materno Infantil do Norte, Centro Hospitalar Universitário do Porto, Porto, Portugal (A.C.A.).; Schaefer F; From the Pediatric Nephrology, Dialysis, and Transplant Unit (W.M., G.P., J.S., G.M.) and the Pediatric Urology Unit (D.G.M.), Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico, and the Department of Clinical Sciences and Community Health, University of Milan (G.M.), Milan, the Department of General and Specialized Surgery for Women and Children, Università degli Studi della Campania 'Luigi Vanvitelli,' Naples (A.L.M., S.G., P.M.), the Institute for Maternal and Child Health-IRCCS Burlo Garofolo (M.P., E. Barbi) and the Department of Medical, Surgical, and Health Sciences, University of Trieste (E. Barbi), Trieste, Pediatric Nephrology and Dialysis, Pediatric Unit, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna (C.L.S., A.P.), the Nephrology and Dialysis Unit, Meyer Children's Hospital, Florence (F.B., M.M.), Pediatria C, Ospedale Donna Bambino, Verona (M.B.), the Pediatric Nephrology and Rheumatology Unit, Azienda Ospedaliera Universitaria Gaetano Martino, University of Messina, Messina (R.C.), the Nuclear Medicine Unit, Circolo Hospital and Macchi Foundation, Azienda Socio Sanitaria Territoriale Sette Laghi, Varese (D.D.P.), the Nuclear Medicine Unit, Department of Medicine, University Hospital of Padua (P.Z.), and the Pediatric Nephrology, Dialysis, and Transplantation Unit, Department of Women's and Children's Health, University of Padua (I.A.), Padua - all in Italy; the Department of Pediatric Nephrology, Başkent University Faculty of Medicine (E. Baskin, K.G.), and the Department of Pediatric Nephrology, Ankara University School of Medicine (F.Y., Z.B.O.), Ankara, the Department of Pediatric Nephrology and Pediatric Rheumatology, Pamukkale University School of Medicine, Denizli (S.Y.), and the Department of Pediatric Nephrology, Istanbul University-Cerrahpaşa, Cerrahpaşa School of Medicine, Istanbul (S.C.) - all in Turkey; the Pediatric Center, Institute of Clinical Medicine, Faculty of Medicine, Vilnius University, Vilnius (A.J., D.R.), and the Department of Radiology, Medical Academy, Lithuanian University of Health Sciences Kauno Klinikos, Kaunas (D.V.) - both in Lithuania; the Department of Pediatrics, Nephrology, and Hypertension, Medical University of Gdansk, Gdansk (A.Z., A.K.), the Department of Pediatrics and Nephrology, Medical University of Warsaw, Warsaw (G.K., A.S.), the Department of Pediatric Nephrology and Hypertension, Chair of Pediatrics, Pediatric Institute, Jagiellonian University Medical College, Krakow (D.D.), the Department of Pediatrics, Faculty of Medical Sciences in Zabrze, Medical University of Silesia in Katowice, Katowice (M.S.), the Department of Pediatrics and Nephrology, Medical University of Bialystok, Bialystok (K.T.-J.), and the Department of Pediatrics, Immunology, and Nephrology, Polish Mother's Memorial Hospital Research Institute, Lodz (M.T.) - all in Poland; the Department of Pediatric Nephrology, University Hospitals Leuven (D.M., S.D.R.), and PKD Research Group, Laboratory of Ion Channel Research, Department of Cellular and Molecular Medicine, KU Leuven (D.M.), Leuven, and the Division of Nephrology, Department of Pediatrics, University Hospital Center of Liège, Liège (J.L.) - all in Belgium; the Department of Pediatric Nephrology, University Hospital Vall d'Hebron, and Universidad Autónoma de Barcelona, Hospital Vall d'Hebron (G.A.), and Pediatric Nephrology, Hospital General de Granollers, Universitat Internacional de Catalunya (M.C.), Barcelona, and Hospital General Universitario Santa Lucía, Cartagena (J.E.C.S.) - all in Spain; the University of Cologne, Faculty of Medicine and University Hospital Cologne, Children's and Adolescents' Hospital, Cologne (L.T.W.), and the Division of Pediatric Nephrology, Center for Pediatrics and Adolescent Medicine, Heidelberg University Hospital, Heidelberg (O.M., F.S.) - both in Germany; and the Division of Pediatric Nephrology, Centro Materno Infantil do Norte, Centro Hospitalar Universitário do Porto, Porto, Portugal (A.C.A.).; Montini G; From the Pediatric Nephrology, Dialysis, and Transplant Unit (W.M., G.P., J.S., G.M.) and the Pediatric Urology Unit (D.G.M.), Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico, and the Department of Clinical Sciences and Community Health, University of Milan (G.M.), Milan, the Department of General and Specialized Surgery for Women and Children, Università degli Studi della Campania 'Luigi Vanvitelli,' Naples (A.L.M., S.G., P.M.), the Institute for Maternal and Child Health-IRCCS Burlo Garofolo (M.P., E. Barbi) and the Department of Medical, Surgical, and Health Sciences, University of Trieste (E. Barbi), Trieste, Pediatric Nephrology and Dialysis, Pediatric Unit, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna (C.L.S., A.P.), the Nephrology and Dialysis Unit, Meyer Children's Hospital, Florence (F.B., M.M.), Pediatria C, Ospedale Donna Bambino, Verona (M.B.), the Pediatric Nephrology and Rheumatology Unit, Azienda Ospedaliera Universitaria Gaetano Martino, University of Messina, Messina (R.C.), the Nuclear Medicine Unit, Circolo Hospital and Macchi Foundation, Azienda Socio Sanitaria Territoriale Sette Laghi, Varese (D.D.P.), the Nuclear Medicine Unit, Department of Medicine, University Hospital of Padua (P.Z.), and the Pediatric Nephrology, Dialysis, and Transplantation Unit, Department of Women's and Children's Health, University of Padua (I.A.), Padua - all in Italy; the Department of Pediatric Nephrology, Başkent University Faculty of Medicine (E. Baskin, K.G.), and the Department of Pediatric Nephrology, Ankara University School of Medicine (F.Y., Z.B.O.), Ankara, the Department of Pediatric Nephrology and Pediatric Rheumatology, Pamukkale University School of Medicine, Denizli (S.Y.), and the Department of Pediatric Nephrology, Istanbul University-Cerrahpaşa, Cerrahpaşa School of Medicine, Istanbul (S.C.) - all in Turkey; the Pediatric Center, Institute of Clinical Medicine, Faculty of Medicine, Vilnius University, Vilnius (A.J., D.R.), and the Department of Radiology, Medical Academy, Lithuanian University of Health Sciences Kauno Klinikos, Kaunas (D.V.) - both in Lithuania; the Department of Pediatrics, Nephrology, and Hypertension, Medical University of Gdansk, Gdansk (A.Z., A.K.), the Department of Pediatrics and Nephrology, Medical University of Warsaw, Warsaw (G.K., A.S.), the Department of Pediatric Nephrology and Hypertension, Chair of Pediatrics, Pediatric Institute, Jagiellonian University Medical College, Krakow (D.D.), the Department of Pediatrics, Faculty of Medical Sciences in Zabrze, Medical University of Silesia in Katowice, Katowice (M.S.), the Department of Pediatrics and Nephrology, Medical University of Bialystok, Bialystok (K.T.-J.), and the Department of Pediatrics, Immunology, and Nephrology, Polish Mother's Memorial Hospital Research Institute, Lodz (M.T.) - all in Poland; the Department of Pediatric Nephrology, University Hospitals Leuven (D.M., S.D.R.), and PKD Research Group, Laboratory of Ion Channel Research, Department of Cellular and Molecular Medicine, KU Leuven (D.M.), Leuven, and the Division of Nephrology, Department of Pediatrics, University Hospital Center of Liège, Liège (J.L.) - all in Belgium; the Department of Pediatric Nephrology, University Hospital Vall d'Hebron, and Universidad Autónoma de Barcelona, Hospital Vall d'Hebron (G.A.), and Pediatric Nephrology, Hospital General de Granollers, Universitat Internacional de Catalunya (M.C.), Barcelona, and Hospital General Universitario Santa Lucía, Cartagena (J.E.C.S.) - all in Spain; the University of Cologne, Faculty of Medicine and University Hospital Cologne, Children's and Adolescents' Hospital, Cologne (L.T.W.), and the Division of Pediatric Nephrology, Center for Pediatrics and Adolescent Medicine, Heidelberg University Hospital, Heidelberg (O.M., F.S.) - both in Germany; and the Division of Pediatric Nephrology, Centro Materno Infantil do Norte, Centro Hospitalar Universitário do Porto, Porto, Portugal (A.C.A.).
Publisher: Massachusetts Medical Society Country of Publication: United States NLM ID: 0255562 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1533-4406 (Electronic) Linking ISSN: 00284793 NLM ISO Abbreviation: N Engl J Med Subsets: MEDLINE
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