1. Department of Surgery and Science, Faculty of Medicine, Academic Assembly, University of Toyama, Toyama 930‑0194, Japan
2. Department of Mechanical and Intellectual Systems Engineering, Faculty of Engineering, University of Toyama, Toyama 930‑8555, Japan
3. Department of Gastroenterology and Gastrointestinal Oncology, National Cancer Center Hospital East, Kashiwa, Chiba 277‑8577, Japan
4. Department of Gastroenterological, Breast and Endocrine Surgery, Graduate School of Medicine, Yamaguchi University, Ube, Yamaguchi 755‑8505, Japan
5. Department of Medical Oncology, Division Hematology, Respiratory Medical and Oncology, Saga University, Saga 849‑8501, Japan
6. Department of Gastroenterology, Aichi Cancer Center Hospital, Nagoya, Aichi 464‑8681, Japan
7. Department of General Surgical Science, Gunma University Graduate School of Medicine, Maebashi, Gunma 371‑8511, Japan
8. Department of Gastroenterological Surgery, Tokai University School of Medicine, Isehara, Kanagawa 259‑1193, Japan
9. Department of Gastroenterological Surgery, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama 700‑8558, Japan
10. Department of Hepato‑Biliary‑Pancreatology, National Hospital Organization Kyushu Cancer Center, Fukuoka 811‑1395, Japan
11. Department of Head and Neck, Esophageal Medical Oncology, National Cancer Center Hospital, Tokyo 104‑0045, Japan
12. Division of Gastroenterological Surgery, Chiba Cancer Center, Chiba 260‑8717, Japan
13. Department of Clinical Oncology, Jichi Medical University, Shimotsuke, Tochigi 329‑0498, Japan
14. President's Office, Shiga University of Medical Science, Otsu, Shiga 520‑2192, Japan
15. Department of Nanobio Drug Discovery, Graduate School of Pharmaceutical Sciences, Kyoto University, Kyoto 606‑8501, Japan
16. Department of Frontier Surgery, Graduate School of Medicine, Chiba University, Chiba 260‑8670, Japan
17. Neuroendocrine Tumor Center, Kansai Electric Power Hospital, Osaka 553‑0003, Japan