1. From the Department of Internal Medicine, Division of Cardiology, UT Southwestern Medical Center, Dallas, TX (A.P., D.K.M., J.A.d.L., S.R.D., J.D.B., E.S.B., S.B., S.P.M., D.J.K.); Veterans Affairs North Texas Health Care System, Dallas, TX (E.S.B., S.B.); Division of Cardiology, Mayo Clinic, Rochester, MN (G.W.B.); Department of Medicine, Division of Cardiology, Duke Clinical Research Institute, Durham, NC (D.N.S., M.R.); Department of Medicine, Division of Cardiology, Emory University School of...