1. Internal Medicine III, University Hospital Augsburg, 86156 Augsburg, Germany
2. Internal Medicine, Kantonsspital St. Gallen, 9007 St. Gallen, Switzerland
3. Department of Gastroenterology, Hepatology and Endocrinology, Klinikum Nürnberg, 90419 Nuremberg, Germany
4. Internal Medicine II, University Hospital Augsburg, 86156 Augsburg, Germany
5. Department of Oncology and Hematology, Kantonsspital St. Gallen, 9007 St. Gallen, Switzerland