1. Department of Radiation Oncology, Seoul National University Hospital, Seoul, Republic of Korea
2. Institute of Radiation Medicine, Seoul National University Medical Research Center, Seoul, Republic of Korea
3. Biomedical Research Institute, Seoul National University College of Medicine, Seoul, Republic of Korea
4. Department of Radiation Oncology, Seoul National University College of Medicine, Seoul, Republic of Korea
5. Center for Convergence Research on Robotics, Advanced Institutes of Convergence Technology, Suwon, Republic of Korea