[1] University Hospital Schleswig-Holstein,Clinic of Surgery
[2] Campus Lübeck,Department of Surgery
[3] University Medical Center Mannheim,Department of Surgery, Hubei Hospital of Chinese Medicine
[4] Hubei University of Chinese Medicine,Department for Visceral, Thoracic and Vascular Surgery at the University Hospital
[5] Technical University Dresden,Department of Surgery
[6] Universitätsklinikum Erlangen,Department of General and Visceral Surgery
[7] University Medical Center Freiburg,Institute for Surgical Pathology, Medical Center
[8] University of Freiburg,University of Freiburg, Faculty of Medicine
[9] Rostock University Hospital,Department of General, Thoracic, Vascular and Transplantation Surgery
[10] Moscow Clinical Scientific Center,undefined