1. From the Cardiovascular Special Studies Center, US Renal Data System, and the Division of Cardiology, Department of Medicine, Hennepin County Medical Center, University of Minnesota, Minneapolis (C.A.H.); Genentech, Inc, South San Francisco, Calif (K.L., M.B.); US Renal Data System Coordinating Center, Minneapolis, Minn (C.A.); and ICON Lifecycle Sciences Group, San Francisco, Calif (P.D.F.).