1. Department of Gynecologic Oncology, Saitama Medical University International Medical Center, Hidaka City, Japan
2. Department of Biostatistics, School of Medicine, Yokohama City University, Yokohama, Kanagawa, Japan
3. Department of Obstetrics and Gynecology, The Jikei University Kashiwa Hospital, Kashiwa, Japan
4. Department of Obstetrics and Gynecology, The Jikei University School of Medicine, Tokyo
5. Department of Gynecologic Oncology, National Hospital Organization Shikoku Cancer Center, Matsuyama, Japan
6. Department of Obstetrics and Gynecology, School of Medicine, Jichi Medical University, Tochigi, Japan
7. National University Cancer Institute Singapore, National University Hospital
8. Yong Loo Lin School of Medicine, National University of Singapore
9. Cancer Science Institute, National University of Singapore
10. Department of Gynecologic Oncology, Hyogo Cancer Center, Akashi City, Hyogo, Japan
11. Department of Obstetrics and Gynecology, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
12. Department of Gynecology, Niigata Cancer Center Hospital, Niigata, Japan
13. Department of Obstetrics and Gynecology, Tokai University School of Medicine, Isehara City, Kanagawa, Japan
14. Department of Obstetrics and Gynecology, Kaizuka City Hospital, Osaka, Japan
15. Department of Obstetrics and Gynecology, Saitama Medical Center, Saitama Medical University, Kawagoe, Japan
16. Department of Obstetrics and Gynecology, Faculty of Medicine, University of Tsukuba, Tsukuba, Japan
17. Department of Gynecology, Osaka International Cancer Institute, Osaka, Japan
18. Department of Obstetrics and Gynecology, Saiseikai Nagasaki Hospital, Nagasaki, Japan
19. Department of Gynaecological Oncology, KK Women’s and Children’s Hospital, Singapore
20. Department of Obstetrics and Gynaecology, The University of Hong Kong, Queen Mary Hospital, Hong Kong
21. Department of Obstetrics and Gynaecology, University of Otago, Christchurch, New Zealand
22. Department of Obstetrics, Gynecology and Reproductive Sciences, University of Pittsburgh School of Medicine, Magee-Womens Hospital of the University of Pittsburgh Medical Center, Pittsburgh
23. Department of Obstetrics and Gynecology, Korea Cancer Center Hospital, Seoul
24. Department of Obstetrics and Gynecology, Yokohama Municipal Citizen’s Hospital, Yokohama, Japan
25. Department of Obstetrics and Gynecology, Mie University, Tsu, Japan
26. Department of Obstetrics and Gynecology, Hirosaki University Graduate School of Medicine, Hirosaki, Japan
27. Department of Obstetrics and Gynecology, Ehime University Graduate School of Medicine, Toon, Japan