1. Gynecologic Cancer Center, Ajou University School of Medicine, Suwon, Korea.
2. Department of Obstetrics and Gynecology, Ajou University School of Medicine, Suwon, Korea.
3. Department of Pathology, Ajou University School of Medicine, Suwon, Korea.
4. Department of Radiation Oncology, Ajou University School of Medicine, Suwon, Korea.