1. Harold Simmons Center for Kidney Disease Research and Epidemiology; Division of Nephrology and Hypertension; University of California Irvine; Orange CA USA
2. Division of Nephrology; University of Tennessee Health Science Center; Memphis TN USA
3. Department of Comprehensive Kidney Disease Research; Osaka University Graduate School of Medicine; Suita Osaka Japan
4. Nephrology Section; Memphis VA Medical Center; Memphis TN USA
5. Fielding School of Public Health at UCLA; Los Angeles CA USA
6. Nephrology Section; Tibor Rubin Veterans Affairs Medical Center; Long Beach CA USA