[1] Toyonaka Municipal Hospital,Department of Surgery
[2] Osaka Medical College Hospital,Cancer Chemotherapy Center
[3] Kinki University,Department of Surgery, Faculty of Medicine
[4] Kitano Hospital,Department of Gastroenterological Surgery
[5] Higashiosaka City Medical Center,Department of Gastroenterological Surgery
[6] Osaka General Medical Center,Department of Surgery
[7] Osaka International Cancer Institute,Department of Medical Oncology
[8] Sakai City Medical Center,Department of Surgery
[9] Kindai University,Department of Medical Oncology, Faculty of Medicine
[10] Yamagata Prefectural Central Hospital,Department of Surgery
[11] Osaka University Graduate School of Medicine,Department of Frontier Science for Cancer and Chemotherapy
[12] Osaka University Graduate School of Medicine,Department of Gastroenterological Surgery
[13] Wakayama Medical University,Clinical Study Support Center