Affiliation: | 1. Colorectal Cancer Center, Kyungpook National University Medical Center, School of Medicine, Kyungpook National University, Daegu, Korea;2. Department of Surgery, Kyoto University Hospital, Kyoto, Japan;3. Department of Surgical Oncology, Faculty of Medicine, The University of Tokyo, Tokyo, Japan;4. Department of Surgery, Korea University Anam Hospital, Seoul, Korea |