[1] Kurume University Hospital,Multidisciplinary Treatment Cancer Center
[2] Kyushu University,Department of Surgery and Science, Graduate School of Medical Sciences
[3] Tokyo Medical University,Gastrointestinal and Pediatric Surgery
[4] Dokkyo Medical University,First Department of Surgery
[5] Kurume University School of Medicine,Department of Surgery
[6] Department of Gastroenterological Surgery,Department of Digestive Surgery, Breast and Thyroid Surgery
[7] Hyogo Cancer Center,Department of Gastroenterological Surgery, Graduate School of Medicine
[8] Kagoshima University,Cancer Biostatistics Laboratory, Clinical Research Institute
[9] Nagoya University,Department of Biostatistics
[10] National Hospital Organization Kyusyu Cancer Center,Department of Gastroenterological Surgery
[11] Yamaguchi University Graduate School of Medicine,Department of Gastroenterological Surgery
[12] Gunma University Graduate School of Medicine,undefined
[13] Kumamoto University Graduate School of Medicine,undefined
