1. From the Departments of Cardiology (D.B., J.J., B.R., M.-K.R., H.P., C.A., I.M.L.), Biomedical Research (H.B.), Infectious Diseases and Chemotherapy (A.G.), and Cardiothoracic Surgery (W.K.) of the Medical University of Vienna, and the Medical Department V (M.K.) of the Wilhelminenspital der Stadt Wien, Austria.