[1
]ISNI 0000 0001 2168 5385, GRID grid.272242.3, Division of Gastrointestinal Medical Oncology, , National Cancer Center Hospital, ; 5-1-1, Tsukiji, Chuo-ku, Tokyo, 104-0045 Japan
[2
]ISNI 0000 0004 0373 3971, GRID grid.136593.b, Department of Frontier Science for Cancer and Chemotherapy, , Osaka University Graduate School of Medicine, ; Suita, Japan
[3
]ISNI 0000 0001 0722 8444, GRID grid.410800.d, Department of Clinical Oncology, , Aichi Cancer Center Hospital, ; Nagoya, Japan
[4
]ISNI 0000 0004 0629 2905, GRID grid.414944.8, Department of Gastrointestinal Surgery, , Kanagawa Cancer Center, ; Yokohama, Japan
[5
]ISNI 0000 0004 1936 9967, GRID grid.258622.9, Department of Medical Oncology, , Kindai University, Faculty of Medicine, ; Osaka, Japan
[6
]ISNI 0000 0004 1936 9959, GRID grid.26091.3c, Keio Cancer Center, School of Medicine, , Keio University, ; Tokyo, Japan
[7
]ISNI 0000 0001 0037 4131, GRID grid.410807.a, Department of Gastroenterology, , Cancer Institute Hospital of the Japanese Foundation for Cancer Research, ; Tokyo, Japan
[8
]ISNI 0000 0004 1764 921X, GRID grid.418490.0, Clinical Trial Promotion Department, , Chiba Cancer Center, ; Chiba, Japan
[9
]GRID grid.417755.5, Department of Gastroenterological Oncology, , Hyogo Cancer Center, ; Akashi, Japan
[10
]ISNI 0000 0000 8855 274X, GRID grid.416695.9, Department of Gastroenterology, , Saitama Cancer Center, ; Saitama, Japan
[11
]ISNI 0000 0004 1774 9501, GRID grid.415797.9, Division of Gastrointestinal Oncology, , Shizuoka Cancer Center, ; Shizuoka, Japan
[12
]GRID grid.470350.5, Department of Gastrointestinal and Medical Oncology, , National Hospital Organization Kyushu Cancer Center, ; Fukuoka, Japan
[13
]ISNI 0000 0004 0403 4283, GRID grid.412398.5, Cancer Chemotherapy Center, , Osaka Medical College Hospital, ; Takatsuki, Japan
[14
]ISNI 0000 0004 0378 6088, GRID grid.412167.7, Division of Cancer Chemotherapy, , Hokkaido University Hospital Cancer Center, ; Sapporo, Japan
[15
]ISNI 0000 0004 0372 3116, GRID grid.412764.2, Department of Clinical Oncology, , St. Marianna University School of Medicine, ; Kawasaki, Japan
[16
]GRID grid.489169.b, Department of Medical Oncology, , Osaka International Cancer Institute, ; Osaka, Japan
[17
]ISNI 0000 0004 0370 4927, GRID grid.256342.4, Department of Surgical Oncology, , Gifu University Graduate School of Medicine, ; Gifu, Japan
[18
]ISNI 0000 0001 2242 4849, GRID grid.177174.3, Department of Surgery and Science, Graduate School of Medical Sciences, , Kyushu University, ; Fukuoka, Japan
[19
]ISNI 0000 0004 0618 8403, GRID grid.415740.3, Department of Gastrointestinal Medical Oncology, , National Hospital Organization Shikoku Cancer Center, ; Matsuyama, Japan
[20
]ISNI 0000 0004 0466 8016, GRID grid.410843.a, Department of Medical Oncology, , Kobe City Medical Center General Hospital, ; Kobe, Japan
[21
]ISNI 0000 0000 8869 7826, GRID grid.415016.7, Department of Clinical Oncology, , Cancer Center Jichi Medical University Hospital, ; Shimotsuke, Japan
[22
]ISNI 0000 0000 8962 7491, GRID grid.416751.0, Department of Medical Oncology, , Saku Central Hospital Advanced Care Center, ; Saku, Japan
[23
]ISNI 0000 0004 1764 7652, GRID grid.459767.e, Internal Medicine, , Misawa City Hospital, ; Misawa, Japan
[24
]GRID grid.415479.a, Department of Medical Oncology, , Tokyo Metropolitan Cancer and Infectious Diseases Center Komagome Hospital, ; Tokyo, Japan
[25
]ISNI 0000 0000 9206 2938, GRID grid.410786.c, Department of Gastroenterology, , Kitasato University School of Medicine, ; Sagamihara, Japan
[26
]Medical Oncology, Hiroshima City Hiroshima Citizens Hospital, Hiroshima, Japan
[27
]ISNI 0000 0004 1763 9927, GRID grid.415804.c, Medical Oncology, , Shizuoka General Hospital, ; Shizuoka, Japan
[28
]ISNI 0000 0004 0615 9100, GRID grid.412002.5, Gastroenterological Surgery, , Kanazawa University Hospital, ; Kanazawa, Japan
[29
]ISNI 0000000406229172, GRID grid.59784.37, National Institute of Cancer Research, , National Health Research Institutes, ; Tainan, Taiwan, Republic of China
[30
]ISNI 0000 0004 0532 3255, GRID grid.64523.36, Department of Internal Medicine, National Cheng Kung University Hospital, , National Cheng Kung University, ; Tainan, Taiwan, Republic of China
[31
]ISNI 0000 0004 0533 4667, GRID grid.267370.7, Department of Oncology, Asan Medical Center, , University of Ulsan College of Medicine, ; Seoul, South Korea
[32
]ISNI 0000 0001 2168 5385, GRID grid.272242.3, Present Address: Department of Gastric Surgery, , National Cancer Center Hospital, ; Tokyo, Japan
[33
]ISNI 0000 0004 1936 9967, GRID grid.258622.9, Present Address: Department of Medical Oncology, , Kindai University Nara Hospital, ; Ikoma, Japan
[34
]ISNI 0000 0001 0037 4131, GRID grid.410807.a, Present Address: Department of Gastroenterology, , Cancer Institute Hospital of the Japanese Foundation for Cancer Research, ; Tokyo, Japan
[35
]ISNI 0000 0000 8662 309X, GRID grid.258331.e, Present Address: Department of Medical Oncology, , Kagawa University, ; Takamatsu, Japan
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