1. From the Institutes of Thrombosis and Hemostasis (R.D., R.E., A.I.), Goldschleger Eye Research (A.S.), and Pathology (I.G., G.S.), Sheba Medical Center, Tel Hashomer, and Sackler Faculty of Medicine, Tel Aviv University, Israel, and Whitaker Cardiovascular Institute and Evans Department of Medicine (J.L., A.B.), Boston University School of Medicine, Boston, Mass.