1. Department of Preventive Medicine, Seoul National University College of Medicine, Seoul, Korea.
2. Cancer Research Institute, Seoul National University, Seoul, Korea.
3. Division of Cancer Registration and Surveillance, National Cancer Center, Goyang, Korea.
4. Department of Obstetrics and Gynecology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.
5. Department of Obstetrics and Gynecology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea.
6. Department of Obstetrics and Gynecology, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea.
7. Department of Gynecologic Oncology, National Cancer Center, Goyang, Korea.
8. Division of Gynecologic Oncology, Department of Obstetrics and Gynecology, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea.
9. Department of Obstetrics and Gynecology, Cheil General Hospital and Women's Healthcare Center, Kwandong University College of Medicine, Seoul, Korea.
10. Department of Biomedical Science, Seoul National University College of Medicine, Seoul, Korea.