1. From the Cardiology Division, Department of Medicine, Massachusetts General Hospital, Harvard Medical School, Boston (R.W.Y., R.S., K.R.); Saint Luke's Mid America Heart Institute and University of Missouri–Kansas City, Kansas City (K.K., J.A.S.); Harrington-McLaughlin Heart and Vascular Institute, University Hospitals Case Medical Center, and Case Western Reserve University School of Medicine, Cleveland, OH (S.A.P.); University of Texas Health Science Center, Houston (H.V.A.); and Department of...