1. Department of Obstetrics and Gynecology, Tokai University School of Medicine, Isehara, Japan.
2. Department of Obstetrics and Gynecology, Toyohashi Municipal Hospital, Aichi, Japan.
3. Division of Gynecologic Oncology, Department of Obstetrics and Gynecology, University of Southern California, Los Angeles, CA, USA.
4. Norris Comprehensive Cancer Center, University of Southern California, Los Angeles, CA, USA.
5. National Cancer Center Japan, Institute for Cancer Control, Tokyo, Japan.
6. Department of Obstetrics and Gynecology, International University of Health and Welfare Graduate School, Tokyo, Japan.
7. Department of Obstetrics and Gynecology, Niigata University School of Medicine, Niigata, Japan.
8. Department of Obstetrics and Gynecology, Jikei University School of Medicine, Tokyo, Japan.
9. Department of Obstetrics and Gynecology, Faculty of Life Sciences, Kumamoto University, Kumamoto, Japan.
10. Department of Obstetrics and Gynecology, Yamagata University Faculty of Medicine, Yamagata, Japan.
11. Department of Obstetrics and Gynecology, Kyoto University Graduate School of Medicine, Kyoto, Japan.
12. Department of Obstetrics and Gynecology, Tohoku University, Sendai, Japan.
13. Department of Obstetrics and Gynecology, Keio University School of Medicine, Tokyo, Japan.