1. From the University of Miami, Miller School of Medicine, Miami, FL (B.H., J.M.H.); Johns Hopkins Hospital, Baltimore, MD (E.K.K., I.S.W., S.D.R., R.H.H.); University of Pittsburgh, PA (H.C.C.); Cleveland Clinic Foundation, Cleveland, OH (E.R.R.); Department of Medicine, Division of Cardiology, University of California, Los Angeles (M.M.K.); and Brigham and Women's Hospital, Boston, MA (K.L.B.).