1. From the Cardiovascular Division, Brigham and Women’s Hospital, and Harvard Medical School, Boston (M.V., T.M., M.A.P., S.D.S.); the Center for Care Delivery and Outcomes Research, Minneapolis VA Health Care System, and University of Minnesota, Minneapolis (O.V.); and the British Heart Foundation Cardiovascular Research Centre, University of Glasgow, Glasgow, United Kingdom (J.J.V.M.).