1. From the Division of Nephrology, Endocrinology, and Vascular Medicine (S.O., K.Naka., M.S., K.Nako, S.I.), Research Division of Dialysis and Chronic Kidney Disease (M.Naka.), Center for the Advancement of Higher Education (S.O.), and Center for Translational and Advanced Research (T.Mo., M.O., T.Mi.), Tohoku University, Sendai, Japan; Division of Clinical Epidemiology (M.M.), Jikei University School of Medicine, Tokyo, Japan.