1. Department of Obstetrics and Gynecology, Tokai University School of Medicine, Kanagawa, Japan.
2. Division of Gynecologic Oncology, Department of Obstetrics and Gynecology, University of Southern California, Los Angeles, CA, USA.
3. Norris Comprehensive Cancer Center, University of Southern California, Los Angeles, CA, USA.
4. Department of Obstetrics and Gynecology, Kobe University School of Medicine, Hyogo, Japan.
5. Department of Obstetrics and Gynecology, Fujita Health University School of Medicine, Aichi, Japan.
6. Department of Obstetrics and Gynecology, Kyoto University School of Medicine, Kyoto, Japan.
7. Department of Obstetrics and Gynecology, Nihon University School of Medicine, Tokyo, Japan.
8. Department of Obstetrics and Gynecology, Kagoshima University School of Medicine, Kagoshima, Japan.
9. Department of Obstetrics and Gynecology, Yamagata University School of Medicine, Yamagata, Japan.