1. Department of Internal Medicine I, University Clinics Salzburg, Paracelsus Medical University, Müllner Hauptstrasse 48, 5020 Salzburg, Austria
2. Department of Internal Medicine, Rotthalmünster Hospital, 94094 Rotthalmünster, Germany
3. Laboratory for Tumour Biology and Experimental Therapies (TREAT), Institute of Physiology and Pathophysiology, Paracelsus Medical University, 5020 Salzburg, Austria
4. Department of Surgery, University Clinics Salzburg, Paracelsus Medical University, 5020 Salzburg, Austria