1. Department of Obstetrics and Gynecology, Korea University Medical Center, Seoul, Korea.
2. Department of Korean Gynecology, CHA Bundang Medical Center, CHA University, Seongnam, Korea.
3. National Cancer Control Institute, National Cancer Center, Goyang, Korea.
4. Center for Uterine Cancer/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 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, 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 Universtiy Medical School, Gwangju, Korea.
14. Department of Obstetrics and Gynecology, Keimyung Universtiy School of Medicine, Daegu, Korea.
15. Department of Pathology, Cheil General Hospital and Women's Healthcare Center, Dankook University College of Medicine, Seoul, Korea.
16. Department of Family Medicine, Kangdong Sacred Heart Hospital, Hallym University College of Medicine, Seoul,
17. Department of Preventive Medicine, The Catholic University of Korea College of Medicine, Seoul, Korea.