1. Gynecologic Cancer Branch, Center for Uterine Cancer, and Center for Clinical Trials, Research Institute and Hospital and Cancer Control and Policy, Graduate School of Cancer Science and Policy, National Cancer Center, Goyang, Korea.
2. Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul, Korea.
3. Department of Obstetrics and Gynecology, Konkuk University School of Medicine, Seoul, Korea.
4. Department of Obstetrics and Gynecology, Yonsei University College of Medicine, Seoul, Korea.
5. Department of Preventive Medicine, College of Medicine, Korea University, Seoul, Korea.
6. Department of Obstetrics and Gynecology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.
7. Department of Obstetrics and Gynecology, Gil Medical Center, Gachon University, Incheon, Korea.
8. Department of Obstetrics and Gynecology, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Korea.
9. Department of Obstetrics and Gynecology, Ewha Womans University Mokdong Hospital, Ewha Womans University School of Medicine, Seoul, Korea.
10. Department of Obstetrics and Gynecology, Kyung Hee University Hospital at Gangdong, Kyung Hee University College of Medicine, Seoul, Korea.
11. Department of Obstetrics and Gynecology, Pusan National University School of Medicine, Pusan, Korea.