1. Harold Simmons Center for Kidney Disease Research and Epidemiology, Division of Nephrology and Hypertension; University of California Irvine Medical Center; Orange CA USA
2. Department of Medicine; University of California Irvine Health; Orange CA USA
3. Division of Nephrology; University of Tennessee Health Science Center; Memphis TN USA
4. Memphis Veterans Affairs Medical Center; Memphis TN USA
5. Tibor Rubin Veterans Affairs Long Beach Healthcare System; Long Beach CA USA
6. Department of Epidemiology; UCLA Fielding School of Public Health; Los Angeles CA USA
7. Los Angeles Biomedical Research Institute at Harbor-UCLA; Torrance CA USA