| Affiliation: | 1. Division of Nephrology, Department of Medicine, University of California, San Francisco, CA;2. Division of Research, Kaiser Permanente Northern California, Oakland, CA;3. Department of Epidemiology and Biostatistics, University of California, San Francisco, CA;4. Department of Nephrology, Kaiser Permanente Oakland Medical Center, Oakland, CA;5. Department of Medicine, Stanford University School of Medicine, Stanford, CA;6. Department of Health Research and Policy, Stanford University School of Medicine, Stanford, CA |
