1. From the University of Leipzig, Heart Center, Department of Cardiology, Leipzig (S.E., A.L., H.T., K.-W.D., R.H., G.S.); J.W. Goethe University Frankfurt, Departments of Cardiology (V.S., B.A., S.D., A.M.Z.) and Transfusion Medicine (T.T.), Frankfurt; and Heart and Diabetes Center NRW, Ruhr University of Bochum, Bad Oeynhausen (C.H.), Germany.