1. From the Division of Cardiology, Department of Medicine (N.R.S., J.S.B.), Division of Hematology, Department of Medicine (J.S.B.), and Division of Vascular Surgery, Department of Surgery (J.S.B.), New York University School of Medicine, New York, NY; and Cardiovascular Division, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA (J.L.M.).