1. Division of Gynecologic Oncology, Department of Obstetrics and Gynecology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.
2. Comprehensive Gynecologic Cancer Center, CHA Bundang Medical Center, CHA University, Seongnam, Korea.
3. Department of Obstetrics and Gynecology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea.
4. Department of Obstetrics and Gynecology, Seoul National University Bundang Hospital, Seongnam, Korea.
5. Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul, Korea.