1. Department of General, Visceral and Transplantation Surgery, Heidelberg University, Heidelberg, Germany
2. Division of Nephrology, Heidelberg University Hospital, Heidelberg, Germany
3. Department of General and Visceral Surgery, Frankfurt University Hospital, Goethe University, Frankfurt am Main, Germany
4. Division of Transplantation, Department of Surgery, Vienna Medical University, Vienna, Austria
5. Department of Visceral Surgery, CHUV University Hospital, Lausanne, Switzerland
6. Department of Vascular and Endovascular Surgery, Düsseldorf University Hospital, Heinrich-Heine-University, Düsseldorf, Germany
7. Department of Visceral and Transplantation Surgery, Hamburg-Eppendorf University Hospital, Hamburg, Germany
8. Department of Vascular and Transplantation Surgery, Basel University Hospital, Basel, Switzerland
9. Department of General, Visceral, and Transplantation Surgery, Hannover Medical University, Hannover, Germany
10. Department of General, Visceral and Transplantation Surgery, Eberhard-Karls-University Hospital, Tübingen, Germany
11. Department of General, Visceral and Transplantation Surgery, Johannes Gutenberg Medical University, Mainz, Germany
12. Department of General, Visceral and Transplantation Surgery, RWTH University Hospital, Aachen, Germany
13. Department of General, Visceral and Transplantation Surgery, Münster University Hospital, Münster, Germany
14. Department of General, Visceral and Transplantation Surgery, Essen University Hospital, Essen, Germany
15. Department of General, Visceral and Surgery, Freiburg University Hospital, Freiburg, Germany
16. Department of Surgery, Charité University Hospital, Berlin, Germany
17. Department of Visceral, Transplantation and Thoracic Surgery, Innsbruck Medical University, Innsbruck, Austria
18. Department of General, Visceral and Vascular Surgery, Jena University Hospital, Jena, Germany
19. Department of Surgery, Knappschaftskrankenhaus University Hospital of Bochum, Ruhr University of Bochum, Bochum, Germany
20. Department of Urology, Carl Gustav Carus University Hospital, Dresden, Germany
21. Department of Urology and Pediatric Urology, University Hospital Erlangen, Erlangen, Germany