1Department of Gastroenterology and Gastrointestinal Oncology, National Cancer Center Hospital East, Kashiwa, Chiba Japan
2Department of Surgery, Kansai Rosai Hospital, Amagasaki, Hyogo Japan
3Department of Surgery, National Hospital Organization Osaka National Hospital, Osaka, Osaka Japan
4Division of Molecular Diagnosis and Cancer Prevention, Saitama Cancer Center, Ina, Saitama Japan
5Division of Gastroenterology, Chiba Cancer Center, Chiba, Chiba, Japan
6Department of Gastrointestinal Medical Oncology, National Hospital Organization Shikoku Cancer Center, Matsuyama, Ehime Japan
7Department of Cancer Chemotherapy, Hokkaido University Hospital Cancer Center, Sapporo, Hokkaido Japan
8Department of Surgery and Science, Graduate School of Medical Science, Kyushu University, Fukuoka, Fukuoka Japan
9Department of Frontier Science for Cancer and Chemotherapy, Graduate School of Medicine, Osaka University, Suita, Osaka Japan
10Scientific Affairs Division, Clinical Affairs, Sysmex Corporation, Kobe, Hyogo Japan
11Department of Biostatistics, Yokohama City University School of Medicine, Yokohama, Kanagawa Japan
© The Author(s) 2020
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