Institution: | aClinic for General, Visceral, and Transplantation Surgery, University Hospital of Essen, Hufelandstr. 55, 45122 Essen, Germany bInstitute of Experimental Medicine, University of Cologne, Cologne, Germany cDepartment of Surgery, University of Witten – Herdecke, Hospital Cologne Merheim, Cologne, Germany dClinic for Swine, Small Ruminants, Forensic Medicine, and Ambulatory Services, Veterinary School of Hannover, Hannover, Germany |