1. Division of Nephrology and Kidney Research Institute; Department of Medicine; University of Washington; Seattle; WA; USA
2. Cardiovascular Division; University of Minnesota; Minneapolis; MN; USA
3. Departments of Laboratory Medicine and Medicine; University of Washington; Seattle; WA; USA
4. Division of Epidemiology and Community Health; School of Public Health; University of Minnesota; Minneapolis; MN; USA
5. Department of Medicine; University of California; San Francisco; CA; USA
6. Cardiovascular Health Research Unit; Departments of Medicine and Epidemiology; University of Washington; Seattle; WA; USA
7. Division of Nephrology and Kidney Research Institute; Departments of Medicine and Epidemiology; University of Washington; Seattle; WA; USA