1. Center for Uterine Cancer, National Cancer Center, Goyang, Korea.
2. Department of Obstetrics and Gynecology, Kyung Hee University School of Medicine, Seoul, Korea.
3. Department of Obstetrics and Gynecology, Korea University College of Medicine, Seoul, Korea.
4. Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul, Korea.
5. Department of Obstetrics and Gynecology, Dongsan Medical Center, Keimyung University, Daegu, Korea.
6. Department of Obstetrics and Gynecology, Chonnam National University Medical School, Gwangju, Korea.
7. Department of Obstetrics and Gynecology, Gachon University Hospital, Incheon, Korea.
8. Department of Obstetrics and Gynecology, Inje University Busan Paik Hospital, Busan, Korea.