1. Cardiovascular Division, Department of Medicine (E.M.D., A.S., A.G., G.A., D.B., S.D., B.L.C., A.Q., M.F.D.C., D.L.B., R.B.), Brigham and Women’s Hospital, Harvard Medical School, Boston, MA.
2. Department of Medicine, Tufts Medical Center, Boston, MA (A.F., J.H.). Yale University School of Medicine, New Haven, CT (K.N.).
3. Department of Radiology (J.H., J.K., M.F.D.C., R.B.), Brigham and Women’s Hospital, Harvard Medical School, Boston, MA.