1. Division of Nephrology and
2. NHLBI's Framingham Heart Study and the Center for Population Studies, 73 Mt Wayte Avenue Suite #2, Framingham, MA 01702, USA,
3. Department of Biostatistics, Boston University School of Public Health, 715 Albany Street, Boston, MA 02118, USA,
4. Cardiovascular Health Research Unit, Departments of Medicine and Epidemiology, University of Washington, 1730 Minor Ave, Suite 1360, Seattle, WA 98101, USA,
5. Department of Epidemiology, Graduate School of Public Health, University of Pittsburgh, Graduate School of Public Health, 551 Crabtree Hall, Pittsburgh, PA 15261, USA,
6. Department of Epidemiology, Erasmus Medical Center, PO Box 2040, 3000 CA Rotterdam, The Netherlands,
7. Netherlands Consortium for Healthy Aging, The Netherlands,
8. Faculty of Medicine, University of Iceland, 101 Reykjavik, Iceland,
9. Icelandic Heart Association, Hjartavernd, Holtasmara 1, 201 Kopavogur, Iceland,
10. Department of Epidemiology and
11. Welch Center for Prevention, Epidemiology and Clinical Research, Johns Hopkins University, 2024 E. Monument Street, Baltimore, MD, 21287, USA,
12. Department of Biostatistical Sciences and
13. Department of Internal Medicine, Erasmus Medical Center, PO Box 1738, 3000 DR Rotterdam, The Netherlands,
14. Cedars Sinai Medical Center, Medical Genetics Institute, Los Angeles, CA, USA,
15. Division of Endocrinology, Brigham and Women's Hospital and Harvard Medical School, Boston, MA02115, USA,
16. Laboratory of Epidemiology, Demography and Biometry, NIA, Gateway Building, 3C309, 7201 Wisconsin Avenue, Bethesda, MD 20892-9205, USA,
17. Department of Epidemiology and Prevention, Division of Public Health Sciences, Wake Forest University, Medical Center Boulevard, Winston-Salem, NC 27157, USA,
18. Division of Nephrology, Harborview Medical Center, University of Washington, Box 356521, 1959 NE Pacific Street, Seattle, WA 98195, USA and
19. Renal Division, Department of Internal Medicine IV, University Hospital of Freiburg, Hugstetter Street 55, 79106 Freiburg, Germany