1. Division of Gastric Surgery, Shizuoka Cancer Center, Shimonagakubo, Nagaizumi-cho, Sunto-gun, Shizuoka, Japan
2. Division of Medical Oncology, Showa University Fujigaoka Hospital, Kanagawa, Japan
3. Division of Pathology, National Cancer Center Hospital East, Kashiwanoha, Kashiwa, Chiba, Japan
4. Department of Surgery, National Hospital Organization Fukuyama Medical Center, Okinogami-cho, Fukuyama, Hiroshima, Japan
5. Data Innovation Center, iAnalysis LLC, Minamiaoyama, Minato-ku, Tokyo, Japan
6. Department of Surgery, Saitama Medical University International Medical Center, Yamane, Hidaka, Saitama, Japan
7. Gastric Surgery Division, National Cancer Center Hospital, Tsukiji, Chuo, Tokyo, Japan
8. Department of Gastroenterological Surgery, Cancer Institute Hospital, Japanese Foundation for Cancer Research, Ariake, Koto-Ku, Tokyo, Japan
9. Department of Surgery, Toyonaka Municipal Hospital, Shibahara-cho, Toyonaka, Osaka, Japan
10. Department of Surgery, Hyogo College of Medicine, Mukogawa-cho, Nishinomiya, Hyogo, Japan