Affiliation: | 1.Department of Surgery, Seoul National University College of Medicine, Seoul, South Korea ;2.Department of Surgery, Gyeongsang National University Hospital, Jinju, South Korea ;3.Department of Surgery, Cancer Research Institute, Seoul National University College of Medicine, Seoul, South Korea ;4.Critical Care Center, Seoul National University College of Medicine, Seoul, South Korea ;5.Department of General, Visceral and Cancer Surgery, University Hospital of Cologne, Cologne, Germany ;6.Department of Surgery, Keimyung University School of Medicine, Daegu, South Korea ;7.Department of Surgery, Ewha Womans University Mokdong Hospital, Seoul, South Korea ;8.Department of Surgery, Gachon University Gil Medical Center, Incheon, South Korea ;9.Department of Surgery, Myongji Hospital, Goyang, South Korea ; |