1. Vth Department of Medicine; University Medical Center Mannheim
2. Department of Biomathematics and Medical Statistics, Medical Faculty Mannheim; University of Heidelberg; Heidelberg Germany
3. Clinic for General, Abdominal and Transplant Surgery; Hannover Medical School; Hannover Germany
4. Department of Abdominal, Visceral and Transplantation Surgery; Charité University Medicine; Berlin Germany
5. Department of Hepatobiliary and Transplant Surgery; University Medical Center Hamburg-Eppendorf; Hamburg Germany
6. Department of General, Visceral, and Transplantation Surgery; University Hospital Essen, University of Duisburg-Essen; Essen Germany
7. Department of General, Visceral, Vascular and Transplant Surgery, Klinikum Grosshadern; Ludwig Maximilians University of Munich; Munich Germany
8. Department of General, Visceral and Pediatric Surgery; University Medical Center Göttingen, Georg August University; Göttingen Germany
9. Department of Visceral, Transplantation, Thoracic and Vascular Surgery; University Hospital Leipzig; Germany
10. Department of General, Visceral and Transplantation Surgery; Westpfalz-Klinikum; Kaiserslautern Germany
11. Department of Surgery and Transplantation; University Hospital Regensburg; Regensburg Germany
12. German Organ Transplantation Foundation; Frankfurt Germany
13. Division of Transplant Surgery, Department of Surgery; Medical University of Graz; Graz Austria
14. Center for Renal Diseases; Weinheim Germany