[1] Kashiwa Hospital,Department of Surgery, Jikei University School of Medicine
[2] Nagoya University Graduate School of Medicine,Department of Gastroenterological Surgery (Surgery II)
[3] Kanagawa Cancer Center,Department of Gastrointestinal Surgery
[4] Chiba Cancer Center,Division of Gastroenterological Surgery
[5] Osaka Prefectural General Medical Center,Department of Surgery
[6] Hyogo Prefectural Awaji Medical Center,Department of Surgery
[7] Aichi Cancer Center Hospital,Department of Gastroenterological Surgery
[8] Itami City Hospital,Department of Surgery
[9] Kinki University,Department of Surgery, Faculty of Medicine
[10] Jikei University School of Medicine,Department of Surgery
[11] Tokai Central Hospital,Department of Biomedical Statistics and Bioinformatics
[12] Kyoto University Graduate School of Medicine,undefined