1 Department of General, Visceral and Transplantation Surgery, University of Heidelberg, Heidelberg, Germany; Study Centre of the German Surgical Society, University of Heidelberg, Heidelberg, Germany.
2 Department of General, Visceral and Transplantation Surgery, University of Heidelberg, Heidelberg, Germany.
3 Department of General, Visceral and Transplantation Surgery, University of Heidelberg, Heidelberg, Germany. Electronic address: arianeb.mehrabi@med.uni-heidelberg.de.