1. Department of Surgery; University of Regensburg; Regensburg; Germany
2. Department of Abdominal and Transplantation Surgery; University Medical Center Leipzig; Leipzig; Germany
3. Department of Gastroenterology, Internal Medicine; University of Heidelberg; Heidelberg; Germany
4. Department of General, Visceral and Transplantation Surgery; Hannover Medical School; Hannover; Germany
5. Hospital for General and Visceral Surgery; Clinical Center of the Johann Wolfgang Goethe University; Frankfurt; Germany
6. Department of General, Visceral and Vascular Surgery; University Hospital Jena; Jena; Germany
7. Transplant Surgery; Department of Surgery; University Medical Center Göttingen; Göttingen; Germany
8. Surgery and Transplantation; University Hospital Policlinico di Tor Vergata; Rome; Italy
9. Department of General Surgery and Transplantation; S. Orsola Hospital; University of Bologna; Bologna; Italy
10. Liver and Multivisceral Transplantation Unit; University of Modena and Reggio Emilia; Modena; Italy
11. Department of General, Visceral and Transplantation Surgery; University Hospital Essen; Essen; Germany