1. Division of Pediatric Nephrology, Nationwide Children's Hospital, Columbus, Ohio
2. University of Michigan, Ann Arbor, Michigan
3. Arbor Research Collaborative for Health, Ann Arbor, Michigan
4. Division of Nephrology, Department of Pediatrics, University of Michigan, Ann Arbor, Michigan
5. Department of Pediatric Nephrology, Duke Children's Hospital and Health Center, Durham, North Carolina
6. Division of Pediatric Nephrology, Dialysis and Transplantation, Stead Family Department of Pediatrics, University of Iowa, Iowa City, Iowa
7. Division of Nephrology, Department of Medicine, Columbia University College of Physicians and Surgeons, New York, New York
8. Division of Pediatric Nephrology, Vanderbilt University Medical Center, Nashville, Tennessee
9. Division of Nephrology, Johns Hopkins University School of Medicine, Baltimore, Maryland
10. Department of Pediatric Nephrology, Medical University of South Carolina, Charleston, South Carolina
11. Department of Medicine, Division of Nephrology, The Ohio State University Wexner Medical Center, Columbus, Ohio
12. Children's Mercy Hospital and University of Missouri-Kansas City School of Medicine, Kansas City, Missouri
13. Division of Nephrology and Hypertension, Kidney Center, Department of Medicine, University of North Carolina, Chapel Hill, North Carolina
14. Kidney Disease Section, Kidney Diseases Branch, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland
15. Department of Biostatistics, School of Public Health, University of Michigan, Ann Arbor, Michigan
16. Division of Medical Subspecialties, Section of Pediatric Nephrology, Helen DeVos Children's Hospital, Grand Rapids, Michigan
17. Department of Pediatric Nephrology, Children's Hospital at Montefiore, Albert Einstein College of Medicine, Bronx, New York
18. Department of Immunology, Transplantology and Internal Diseases, Medical University of Warsaw, Warsaw, Poland
19. Institute of Biochemistry and Biophysics, Polish Academy of Sciences, Warsaw, Poland
20. Division of Pediatric Nephrology, Department of Pediatrics, Emory University and Children's Healthcare of Atlanta, Atlanta, Georgia
21. Division of Pediatric Nephrology, Hospital for Sick Children, Toronto, Ontario, Canada
22. Child Health Evaluative Sciences, Research Institute, Hospital for Sick Children, Toronto, Ontario, Canada
23. Department of Medicine, Division of Nephrology, University Health Network, Toronto, Ontario, Canada
24. Division of Pathology, Hôpital Maisonneuve-Rosemont, Université de Montréal, Montréal, Québec, Canada
25. Department of Pathology, Columbia University Medical Center, New York, New York
26. Division of Nephrology, Hypertension and Renal Transplantation, University of Kentucky, Lexington, Kentucky
27. Department of Internal Medicine, University of Pennsylvania School of Medicine, Philadelphia, Pennsylvania
28. Department of Medicine-Renal, University of Louisville School of Medicine, Louisville, Kentucky
29. Division of Nephrology, Department of Internal Medicine, University of Michigan, Ann Arbor, Michigan
30. Division of Nephrology, Virginia Commonwealth University, Richmond, Virginia