1. From the Cardiology and Molecular Cardiology (U.F.-R., B.A., F.H.S., J.H., D.L., S.F., V.S., S.D., A.M.Z.), Department of Medicine III, Goethe University of Frankfurt, Frankfurt/Main, Germany; Institute for Transfusion Medicine and Immunohematology (T.T.), Red Cross Blood Donor Service Baden-Württemberg-Hessen, Frankfurt/Main, Germany; and Institute of Hematology (H.M.), Department of Medicine II, Goethe University of Frankfurt, Frankfurt/Main, Germany.