[1] St. Marianna University School of Medicine,Department of Clinical Oncology
[2] Kagawa University Faculty of Medicine Cancer Center,Department of Clinical Oncology
[3] Kagawa University Hospital,Division of Gastroenterology
[4] Chiba Cancer Center,Department of Medical Oncology
[5] International Medical Center,Department of Gastroenterology
[6] Saitama Medical University,Division of Medical Oncology, Department of Internal Medicine
[7] Kochi Health Sciences Center,Department of Digestive Surgery
[8] Showa University Koto Toyosu Hospital,Aizawa Comprehensive Cancer Center
[9] Nihon University School of Medicine,Gastrointestinal Cancer Center
[10] Aizawa Hospital,Department of Medical Oncology
[11] Sano Hospital,Department of Surgery
[12] Japan Labour Health and Welfare Organization Okayama Rosai Hospital,Department of Internal Medicine
[13] Hakodate Goryoukaku Hospital,Department of Surgery
[14] Konan Hospital,Department of Surgery
[15] Tokyo Metropolitan Cancer and Infections diseases Center Komagome Hospital,Department of Clinical Medicine (Biostatistics)
[16] Himeji Red Cross Hospital,Division of Medical Oncology
[17] Kitasato University School of Pharmacy,undefined
[18] Showa University Fujigaoka Hospital,undefined