1. Service d'Immunologie Biologique, Hôpital Européen Georges Pompidou, Paris, and INSERM UMRS 872, Cordeliers Research Center, Paris, France;
2. Division of Rheumatology, Washington University School of Medicine, St Louis, MO;
3. Northern Molecular Genetics Service and
4. Departments of Renal Medicine and
5. Paediatric Nephrology, Newcastle upon Tyne Hospitals National Health Service Foundation Trust, Newcastle upon Tyne, United Kingdom;
6. Division of Nephrology, Children's Hospital of Philadelphia, PA;
7. Paediatric Nephrology, Maria Fareri Children's Hospital at Westchester Medical Center, Valhalla, NY;
8. Division of Clinical Nephrology, Department of Internal Medicine, Innsbruck University Hospital, Innsbruck, Austria;
9. Pediatric Nephrology, Children's Hospital of Michigan, Detroit;
10. Unité de Néphrologie Pédiatrique, Centre Hospitalier de Tours, Tours, France;
11. Starship Children's Hospital, Auckland, New Zealand;
12. Département de Médecine de l'Enfant et de l'Adolescent, Centre Hospitalier Universitaire Rennes, Hôpital Sud, Rennes, France;
13. Service de Néphrologie Transplantation Renale, Hôpital Clemenceau, Caen, France;
14. Service de Pédiatrie, Hôpital de Hautepierre, Strasbourg, France;
15. Service de Medecine Interne, Hôpital Robert Boulin, Libourne, France;
16. Service de Néphrologie Pédiatrique, Hôpital Robert-Debré, Paris, France;
17. Crystal and Structural Chemistry, Bijvoet Center for Biomolecular Research, Faculty of Science, Utrecht University, Utrecht, The Netherlands; and
18. Institute of Human Genetics, Newcastle University, Newcastle upon Tyne, United Kingdom