1. From the Division of Cardiology (M.M., T.M.) and the Department of Internal Medicine and Department of Transfusion Medicine (K.G., P.K.), University Hospital Hamburg-Eppendorf, Hamburg, Germany; the Division of Cardiology (C.B.), Department of Internal Medicine, University Hospital Rostock, Germany; and the Department of Pathology and Medicine (P.T.), Baylor College of Medicine, Houston, Tex.