1. From the Division of Cardiology (J.T.H.), Scripps Clinic, La Jolla, Calif; Department of Medicine (G.C.F.), University of California Los Angeles Medical Center, Los Angeles, Calif; Baylor Heart and Vascular Institute (C.W.Y.), Baylor University Medical Center, Dallas, Tex; Nursing Institute and George M. and Linda H. Kaufman Center for Heart Failure (N.M.A.), Cleveland Clinic Foundation, Cleveland, Ohio; Division of Cardiology (A.B.C.), University of South Florida College of Medicine, Tampa, Fla;...