1. From the Aab Cardiovascular Research Institute (S.J.C., S.K.T., R.A.S., A.M., D.P., D.J.F., K.L.M., C.N.M.)
2. Division of Cardiology, Department of Medicine (S.J.C., C.N.M.)
3. Division of Vascular Surgery, Department of Surgery (D.S.M., M.C.S., S.T.), University of Rochester School of Medicine, NY
4. Department of Pathology, Johns Hopkins Medical Institutions, Baltimore, MD (P.S., L.C., H.Z.).