1 Department of General, Visceral and Transplantation Surgery, Heidelberg University Hospital, Heidelberg, Germany.
2 Department of Surgery, Clarunis-University Digestive Health Care Center, St. Clara Hospital and University Hospital Basel, Basel, Switzerland.
3 Department of General, Visceral and Transplantation Surgery, Heidelberg University Hospital, Heidelberg, Germany. [email protected].
4 Department of Surgery, Clarunis-University Digestive Health Care Center, St. Clara Hospital and University Hospital Basel, Basel, Switzerland. [email protected].