1. From the Cardiovascular Division, Department of Medicine (E.L., Y.Y., P.L., M.A., S.K., A.P.S., P.G.), the Department of Radiology (E.K.Y., D.F.K.), and the Department of Pathology (E.A., F.J.S.), Brigham and Women’s Hospital and Harvard Medical School, Boston, and the VA Boston Healthcare System, West Roxbury (S.K.), Mass.