1. From the Department of Cardiology and Angiology (T.K., A.Q., H.D., K.C.W.), Hannover Medical School, Hannover, Germany; Federal Armed Forces Hospital (J.M.S., C.B.), Koblenz, Germany; and Department of Medicine II (C.S., P.S.W., R.S., E.L., H.J.R., T.M., S.B.), Johannes-Gutenberg University, Mainz, Germany.