1. Harold Simmons Center for Kidney Disease Research and Epidemiology, University of California Irvine, School of Medicine, Orange, CA, USA
2. Department of Medicine, University of California, Irvine, School of Medicine, Orange, CA, USA
3. Quintiles Therapeutic Science and Strategy Unit, San Diego, California
4. Division of Nephrology, University of Tennessee Health Science Center, Memphis, TN, USA
5. Nephrology Section, Memphis VA Medical Center, Memphis, TN, USA
6. Division of Nephrology and Hypertension, Kaiser Permanente Medical Center, Los Angeles, CA, USA
7. Fielding School of Public Health at UCLA, Los Angeles, CA, USA
8. Los Angeles Biomedical Research Institute at Harbor-UCLA, Torrance, CA, USA