| Affiliation: | 1 Department of Medicine, Division of Nephrology, University of Washington Kidney Research Institute, Seattle, WA;2 Department of Medicine, Division of Nephrology, Columbia University, New York, NY;3 Department of Epidemiology, University of Washington Kidney Research Institute, Seattle, WA;4 Department of Biostatistics, University of Washington Kidney Research Institute, Seattle, WA;5 Laboratory of Epidemiology, Demography and Biometry, National Institute on Aging, Bethesda, MD;6 Division of Nephrology, University of Maryland, Baltimore, MD |
