1. From the Department of Medicine and Division of General Internal Medicine (E.M.D.), University of Pittsburgh, Pittsburgh, PA; Welch Center for Prevention, Epidemiology and International Health (L.J.A., B.C.A.), Johns Hopkins University, Baltimore, MD; Center for Clinical Investigation (X.W.), and Department of Medicine and Division of Hypertension (M.R., J.T.W.), Case Western Reserve University, Cleveland, OH; Division of Epidemiology, Department of Internal Medicine (T.G.), University of Utah, Salt...