1. Section on Genetics and Epidemiology, Research Division, Joslin Diabetes Center, Boston, MA 02215, USA.
2. Department of Medicine, Harvard Medical School, Boston, MA 02215, USA.
3. Division of Nephrology, Hypertension, and Endocrinology, Nihon University School of Medicine, Tokyo 173-8610, Japan.
4. Chronic Kidney Disease Section, National Institute of Diabetes and Digestive and Kidney Diseases, Phoenix, AZ 85014, USA.
5. Pediatric Clinical Research Center Romeo ed Enrica Invernizzi, DIBIC L. Sacco, Università di Milano and Endocrinology Division ASST Sacco-FBF, Milan 20121, Italy.
6. Diabetes and Complications Department, Lilly Research Laboratories, Eli Lilly and Company, Indianapolis, IN 46225, USA.
7. CHU Poitiers, University of Poitiers, Inserm, Clinical Investigation Center CIC1402, Poitiers 86000, France.
8. Department of Medicine and Surgery, Unit of Pathology, University of Parma, Parma 43126, Italy.
9. Department of Internal Medicine, Medical School, University of Michigan, Ann Arbor, MI 48109, USA.
10. Department of Biostatistics, School of Public Health, University of Michigan, Ann Arbor, MI 48109-2029, USA.
11. Division of Anatomic and Molecular Pathology, Department of Pathology and Immunology, Washington University in Saint Louis School of Medicine, St. Louis 63110, USA.
12. Department of Laboratory Medicine & Pathology, University of Washington, Seattle, WA 98109, USA.
13. Department of Pediatrics and Medicine, University of Minnesota, Minneapolis, MN 55455, USA.
14. Division of Nephrology, Department of Medicine, Washington University in Saint Louis School of Medicine, St. Louis, MO 63110, USA.
15. Nephrology Division, Boston Children’s Hospital, Boston, MA 02115, USA.