1 Department of General, Visceral, Transplantation, Vascular and Thoracic Surgery, University of Munich, Campus Grosshadern, Munich, Germany.
2 Department of Clinical Radiology, University of Munich, Campus Grosshadern, Munich, Germany.
3 Department of General, Visceral, Transplantation, Vascular and Thoracic Surgery, University of Munich, Campus Grosshadern, Munich, Germany. tobias.schiergens@med.lmu.de.