1. Department of Obstetrics and Gynecology, Guro Hospital, Korea University College of Medicine, Seoul, Korea.
2. Center for Uterine Cancer, Research Institute and Hospital, National Cancer Center, Goyang, Korea.
3. Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea.
4. Department of Obstetrics and Gynecology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.
5. Division of Gynecologic Oncology, Department of Obstetrics and Gynecology, Yonsei University College of Medicine, Seoul, Korea.
6. Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul, Korea.
7. Department of Obstetrics and Gynecology, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea.
8. Department of Obstetrics and Gynecology, Cheil General Hospital and Women's Healthcare Center, Kwandong University College of Medicine, Seoul, Korea.
9. Institute for Evidence-Based Medicine, The Korean Branch of Australasian Cochrane Center, Department of Preventive Medicine, Korea University College of Medicine, Seoul, Korea.
10. Department of Pathology, Cheil General Hospital and Women's Healthcare Center, Kwandong University College of Medicine, Seoul, Korea.
11. Department of Obstetrics and Gynecology, Ajou University Hospital, Ajou University School of Medicine, Suwon, Korea.
12. Department of Obstetrics and Gynecology, Korea University Anam Hospital, Korea University College of Medicine, Seoul, Korea.
13. Department of Pathology, Center for Uterine Cancer, Research Institute and Hospital, National Cancer Center, Goyang, Korea.
14. Department of Pathology, Inje University Busan Paik Hospital, Inje University College of Medicine, Busan, Korea.
15. Department of Obstetrics and Gynecology, The Catholic University of Korea College of Medicine, Seoul, Korea.
16. Department of Pathology, The Catholic University of Korea College of Medicine, Seoul, Korea.
17. Department of Pathology, Ajou University Hospital, Ajou University School of Medicine, Suwon, Korea.
18. Department of Obstetrics and Gynecology, Seoul National University Boramae Hospital, Seoul, Korea.
19. Division of Gynecologic Oncology, Department of Obstetrics and Gynecology, Ewha Womans University School of Medicine, Seoul, Korea.