1. Departments of Surgery; Campus Charité Mitte and Campus Virchow Klinikum
2. Department of Visceral, Transplantation, Vascular and Thoracic Surgery; University Hospital of Leipzig; Leipzig Germany
3. Department of General, Visceral and Transplantation Surgery; University Hospital Aachen; Aachen Germany
4. Radiology
5. Gastroenterology and Hepatology
6. Hematology and Oncology, Charité Campus Virchow; Universitätsmedizin Berlin; Berlin Germany