1. Department of Obstetrics and Gynecology, Korea University Medical Center, Seoul, Korea.
2. Department of Korean Gynecology, Jaseng Hospital of Korean Medicine, Seoul, Korea.
3. National Cancer Control Institute, National Cancer Center, Goyang, Korea.
4. Center for Uterine Cancer and Department of Pathology, National Cancer Center, Goyang, Korea.
5. Center for Uterine Cancer, Hospital, Gynecologic Cancer Branch, Research Institute, Department of Cancer Control and Policy, Graduate School of Cancer Science and Policy, National Cancer Center, Goyang, Korea.
6. Department of Family Medicine, Konkuk University Medical Center, Konkuk University School of Medicine, Seoul, Korea.
7. Department of Cancer Control and Policy, Graduate School of Cancer Science and Policy, National Cancer Center, Goyang, Korea.
8. Department of Obstetrics and Gynecology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea.
9. Department of Obstetrics and Gynecology, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea.
10. Department of Obstetrics and Gynecology, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea.
11. Department of Family Medicine, Dankook University College of Medicine, Cheonan, Korea.
12. Department of Social Medicine, Dankook University College of Medicine, Cheonan, Korea.
13. Department of Pathology, Chosun University School of Medicine, Gwangju, Korea.
14. Department of Obstetrics and Gynecology, Keimyung University School of Medicine, Daegu, Korea.
15. Department of Pathology, Cheil General Hospital & Women's Healthcare Center, Dankook University College of Medicine, Seoul, Korea.
16. Department of Family Medicine, Hallym University Kangdong Sacred Heart Hospital, Hallym University College of Medicine, Seoul, Korea.
17. Department of Preventive Medicine, The Catholic University of Korea College of Medicine, Seoul, Korea.