1. V. Medizinische Universitätsklinik (H.K., B.A.Y., F.J.v.d.W.), 68167 Mannheim, Germany
2. Institute of Clinical Pharmacology (M.C., M.W.), Faculty of Clinical Medicine Mannheim, University of Heidelberg, 68167 Mannheim, Germany
3. Department of Internal Medicine IV, J. W. Goethe University (P.C.B.), 60054 Frankfurt am Main, Germany