Affiliation: | 1 Harold Simmons Center for Chronic Disease Research and Epidemiology, Los Angeles Biomedical Research Institute at Harbor-UCLA Medical Center, Torrance, CA 2 Division of Nephrology and Hypertension, Los Angeles Biomedical Research Institute at Harbor-UCLA Medical Center, Torrance, CA 3 Salem Veterans Affairs Medical Center, Salem, VA 4 University of Virginia, Charlottesville, VA 5 DaVita Inc, Denver, CO 6 David Geffen School of Medicine at UCLA and UCLA School of Public Health, Los Angeles, CA |