1. Department of Obstetrics and Gynecology Tottori University School of Medicine Yonago Tottori Japan
2. Department of Medical Oncology Hyogo Cancer Center Akashi Hyogo Japan
3. Department of Obstetrics and Gynecology Iwate Medical University School of Medicine Morioka Iwate Japan
4. Department of Obstetrics and Gynecology Keio University School of Medicine Tokyo Japan
5. Department of Obstetrics and Gynecology The Jikei University School of Medicine Tokyo Japan
6. Department of Obstetrics and Gynecology Kurume University School of Medicine Kurume Japan
7. Department of Obstetrics and Gynecology Shinshu University Nagano Japan
8. Department of Gynecology The Cancer Institute Hospital of JFCR Tokyo Japan
9. Department of Gynecology Service National Kyushu Cancer Center Fukuoka Japan
10. Department of Obstetrics and Gynecology Juntendo University Hospital Tokyo Japan
11. Department of Gynecology Tohoku University Graduate School of Medicine Sendai Japan
12. Department of Gynecology and Obstetrics, Graduate School of Medicine Kyoto University Kyoto Japan
13. Department of Obstetrics and Gynecology, Graduate School of Medical Science Kyoto Prefectural University of Medicine Kyoto Japan
14. Department of Obstetrics and Gynecology, Faculty of Medicine The University of Tokyo Tokyo Japan
15. Department of Gynecology Tokyo Metropolitan Cancer and Infectious Diseases Center, Komagome Hospital Tokyo Japan
16. Department of Obstetrics and Gynecology, Faculty of Medicine Kagoshima University Kagoshima Japan
17. Department of Obstetrics and Gynecology National Hospital Organization Kure Medical Center and Chugoku Cancer Center Kure Japan
18. Department of Gynecology, National Cancer Center Hospital Tokyo Japan
19. Department of Obstetrics and Gynecology, Institute of Medicine University of Tsukuba Tsukuba Japan