1. From the 2nd Department of Medicine, Divisions of Angiology (C.W.K.) and Cardiology (T.B., G.H., G.M., T.S., G.M., H.B., M.Z.), Department of Cardiothoracic Surgery (M.G.), Department of Infectious Diseases (F.T.), and Department of Pathology (R.U.), University of Vienna, Vienna, Austria; Wilhelminen Hospital, Department of Cardiology (O.M.), Vienna, Austria.