1. Department of Surgery and Oncology, Kyushu University
2. Department of Oncology Center, Yamaguchi University Hospital
3. Department of Gastroenterological Surgery, Graduate School of Medicine, Osaka University
4. Department of Digestive Surgery, Breast and Thyroid Surgery, Kagoshima University
5. Division of Surgical Oncology, Department of Surgery, Nagoya University Graduate School of Medicine
6. Second Department of Surgery, Wakayama Medical University
7. Department of Surgery, Nara Medical University
8. Division of Hepato-Biliary-Pancreatic Surgery, Shizuoka Cancer Center
9. Division of Radiation Oncology, Kansai Medical University
10. Department of Surgery and Science, Faculty of Medicine, Academic Assembly, University of Toyama
11. Department of Surgery, Kindai University Faculty of Medicine
12. Department of Gastroenterological Surgery, Yokohama City University
13. Department of Surgery, Tohoku University
14. Department of Surgery, Kansai Medical University