1. Department of Gynecologic Oncology Shizuoka Cancer Center Shizuoka Japan
2. Cancer Biostatistics Laboratory Clinical Research Institute National Kyusyu Cancer Center Fukuoka Japan
3. Department of Obstetrics and Gynecology Kurume University School of Medicine Fukuoka Japan
4. Department of Obstetrics and Gynecology Iwate Medical University Hospital Iwate Japan
5. Department of Obstetrics and Gynecology Mie University Hospital Mie Japan
6. Department of Obstetrics and Gynecology Jichi Medical University Tochigi Japan
7. Department of Obstetrics and Gynecology Oita University Faculty of Medicine Oita Japan
8. Department of Obstetrics and Gynecology Okinawa Chubu Hospital Okinawa Japan
9. Department of Obstetrics and Gynecology Nara Prefecture General Medical Center Nara Japan
10. Department of Obstetrics and Gynecology Japanese Red Cross Shizuoka Hospital Shizuoka Japan
11. Department of Obstetrics and Gynecology Nagoya City University Graduate School of Medical Sciences Nagoya Japan
12. Department of Obstetrics and Gynecology Nara Medical University Nara Japan
13. Department of Obstetrics and Gynecology Hyogo College of Medicine Hyogo Japan
14. Department of Obstetrics and Gynecology Graduate School of Medical Science Kyoto Prefectural University of Medicine Kyoto Japan
15. Department of Obstetrics and Gynecology Kansai Rosai Hospital Hyogo Japan