| Affiliation: | 1 Division of General Internal Medicine, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD;2 Welch Center for Prevention, Epidemiology, and Clinical Research, Johns Hopkins Medical Institutions, Baltimore, MD;3 Division of Nephrology, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD;4 Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD;5 Harvard University School of Medicine, Boston, MA;6 Department of Medicine, San Francisco General Hospital and University of California San Francisco, San Francisco, CA |
