1. From the Division of Cardiovascular Medicine, Brigham and Women’s Hospital, Boston, MA (A.M.S., B.C., A.S.D., G.L., M.A.P., S.D.S.); University of Wisconsin Hospital and Clinics, Madison (N.K.S.); Northwestern University Feinberg School of Medicine, Chicago, IL (S.J.S.); VA Medical Center, Minneapolis, MN (I.S.A.); Montreal Heart Institute, Montreal, Canada (E.O., J.R.); New York Methodist Hospital, Brooklyn (J.F.H.); University of Utah School of Medicine, Salt Lake City (J.F.); Medical University...