1. Academic committee of Japan Society for Endoscopic Surgery Tokyo Japan
2. Department of Gastroenterological and Pediatric Surgery Oita University Faculty of Medicine Yufu Japan
3. Department of Gastroenterological Surgery Nagoya City University Graduate School of Medical Science Nagoya Japan
4. Meirikai Tokyo Yamato Hospital Tokyo Japan
5. Department of Urology Kawashima Hospital Tokushima Japan
6. Division of Colorectal Surgery, Department of Surgery Tokyo Women's Medical University Tokyo Japan
7. Department of Surgery Nagasaki University Graduate School of Biomedical Sciences Nagasaki Japan
8. Department of Surgery Shonan Keiiku Hospital Fujisawa Japan
9. Department of Gastroenterological Surgery Osaka University Graduate School of Medicine Osaka Japan
10. Weight Loss and Metabolic Surgery Center, Yotsuya Medical Cube Tokyo Japan
11. Department of Pediatric Surgery Research Field in Medical and Health Sciences, Medical and Dental Area, Research and Education Assembly, Kagoshima University Kagoshima Japan
12. Department of General Thoracic Surgery Tokai University School of Medicine Isehara Japan
13. Department of Thoracic Surgery University of Tsukuba Tsukuba Japan
14. Minnano Fukuoka Clinic Fukuoka Japan
15. Department of Cardiovascular Surgery Juntendo University Tokyo Japan
16. Department of Urology Tokai University School of Medicine Isehara Japan
17. Department of Obstetrics and Gynecology Tottori University Faculty of Medicine Yonago Japan
18. Department of Orthopedic Surgery Toho University School of Medicine Tokyo Japan
19. Department of Plastic and Reconstructive Surgery Saga University, Faculty of Medicine Saga Japan
20. Department of Colorectal Surgery National Cancer Center Hospital Tokyo Japan
21. Department of Surgery Medical Topia Soka Hospital Soka Japan
22. Department of Cardiovascular Surgery Kindai University Hospital Osaka‐Sayama Japan
23. Kitakyushu Koga Hospital Koga Japan
24. National Hospital Organization Tokyo Medical Center Tokyo Japan
25. Oita University Yufu Japan
26. Kitasato University Kitasato Institute Hospital Tokyo Japan
27. Japanese Red Cross Osaka Hospital Osaka Japan