1. From the Department of Medicine, Division of Cardiology, Mayo Clinic, Rochester, MN (B.A.B., H.C., G.L., M.M.R.); Department of Medicine, Massachusetts General Hospital, Boston (G.D.L., M.J.S.); Department of Medicine, Duke Clinical Research Institute, Durham, NC (S.E.M.); Department of Medicine, Cardiology Unit, University of Vermont College of Medicine, Burlington (M.L.W.); Department of Medicine, Michael E. DeBakey VA Medical Center and Department of Medicine, Baylor College of Medicine, Houston,...