1. From the Departments of Vascular Biology and Thrombosis Research (E.v.S., O.V.O., G.S., B.R.B., V.N.B.), Dermatology (F.G.), Internal Medicine III (S.B.), Medical and Chemical Laboratory Diagnostics (C.M.), and Internal Medicine I (S.K.), Medical University of Vienna, Austria; Eisai Research Institute (M.G., J.C.), Andover, Mass; and the Cardiovascular Research Center (A.K., N.L.), University of Virginia, Charlottesville.