Affiliation: | 1. Department of Biostatistics, University of California, , Los Angeles, California 90095, U.S.A.;2. Department of Medicine, University of California, , Irvine, California 92868, U.S.A.;3. Institute for Clinical and Translational Science, University of California, , Irvine, California 92687, U.S.A.;4. Division of Nephrology, Department of Medicine, University of California, , Sacramento, California 95817, U.S.A.;5. Graduate Group in Epidemiology, University of California, , Davis, California 95616, U.S.A. |