1. Department of Radiation Oncology, Hallym University Dongtan Sacred Heart Hospital, Hwaseong, Korea.
2. Center for Uterine Cancer, Research Institute and Hospital, National Cancer Center, Goyang, Korea.
3. Department of Radiation Oncology, Cheil General Hospital & Women's Healthcare Center, Dankook University College of Medicine, Seoul, Korea.
4. Department of Radiation Oncology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.
5. Department of Radiation Oncology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea.
6. Department of Radiation Oncology, Seoul National University College of Medicine, Seoul, Korea.
7. Department of Radiation Oncology, Yonsei Cancer Center, Yonsei University College of Medicine, Seoul, Korea.