B Harbeck1, C S Haas2, H Mönig3. 1. Department of Medicine I, University of Lubeck, Ratzeburger Allee 160, 23538, Lubeck, Germany. birgit.harbeck@uk-sh.de. 2. Department of Medicine I, University of Lubeck, Ratzeburger Allee 160, 23538, Lubeck, Germany. 3. Department of Medicine I, University of Kiel, Kiel, Germany.