1. Department of Digestive Surgery and Surgical Oncology (Surgery II); Yamaguchi University Graduate School of Medicine; Ube Japan
2. Cancer Center; Aichi Medical University; Nagakute Japan
3. Department of Digestive Medicine; Kyoto First Red Cross Hospital; Kyoto Japan
4. Department of Surgery; Kansai Rosai Hospital; Osaka Japan
5. Department of Surgery; Aomori Prefectural Hospital; Aomori Japan
6. Nozawa Clinic; Imizu Japan
7. Program for the Strategic Education of Future Surgeons; Akita University Graduate School of Medicine; Akita Japan
8. Cancer Treatment Center; Kochi Medical School; Kochi Japan
9. Department of Surgery; Kinki Central Hospital; Osaka Japan
10. Department of Surgery; Kitakyushu General Hospital; Kokura Japan
11. Biomolecular Engineering of Applied Molecular Bioscience; Ube Japan
12. Oncology and Laboratory Medicine; Yamaguchi University Graduate School of Medicine; Ube Japan
13. Translational Research and Clinical Trial Center; Hokkaido University Hospital; Sapporo Japan
14. Tokai Central Hospital; Gifu Japan