1. From the Division of Cardiology, Brigham and Women's Hospital, Boston, MA (D.P.F.); the Department of Medicine, Hamilton Health Sciences and McMaster University, Hamilton, Ontario, Canada (J.W.E.); Geisinger Clinic, Danville, PA (P.B.B.); the Mayo Clinic, Rochester, MN (D.R.H.); the Division of Cardiology, VA Boston Health System, Boston, MA (D.L.B.); Gill Heart Institute and the Division of Cardiovascular Medicine, University of Kentucky, Lexington, KY (D.J.M.); the Divisions of Cardiology and...