1. Department of Obstetrics and Gynecology, CHA Gangnam Medical Center, CHA University School of Medicine, Seoul, Korea.
2. Division of Gynecologic Oncology, Department of Obstetrics and Gynecology, Ajou University School of Medicine, Suwon, Korea.
3. Department of Obstetrics and Gynecology, Yonsei University College of Medicine, Seoul, Korea.
4. Department of Obstetrics and Gynecology, Ewha Womans University College of Medicine, Seoul, Korea.
5. Department of Obstetrics and Gynecology, Seoul National University Bundang Hospital, Seongnam, Korea.
6. Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul, Korea.
7. Department of Obstetrics and Gynecology, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Korea.
8. Department of Obstetrics and Gynecology, Research Institute of Medical Science, Konkuk University School of Medicine, Seoul, Korea.
9. Department of Obstetrics and Gynecology, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea.
10. Department of Obstetrics and Gynecology, Korea University Medical Center, Korea University College of Medicine, Seoul, Korea.
11. Department of Obstetrics and Gynecology, Division of Tumor Immunology, Center for Uterine Cancer, and Center for Clinical Trials, National Cancer Center, Goyang, Korea.