[1] Kagawa University,Department of Clinical Oncology, Faculty of Medicine
[2] Kansai Rosai Hospital,Department of Colorectal Surgery
[3] Aichi Cancer Center Hospital,Department of Clinical Oncology
[4] National Cancer Center Hospital East,Department of Gastrointestinal Oncology
[5] Shizuoka Cancer Center,Division of Gastrointestinal Oncology
[6] Kyushu University,Department of Surgery and Science, Graduate School of Medical Sciences
[7] Hokkaido University Hospital,Department of Gastroenterology and Hepatology
[8] Hokkaido University Hospital Cancer Center,Department of Cancer Chemotherapy