1. Department of Internal Medicine I; Paracelsus Medical University/Salzburger Landeskliniken; Muellner Hauptstrasse 48 5020 Salzburg Austria
2. Laboratory for Tumour Biology and Experimental Therapies; Institute of Physiology and Pathophysiology, Paracelsus Medical University; Salzburg Austria
3. Department of Internal Medicine; Landeskrankenhaus Muerzzuschlag; Austria