1. Radiological & Medico Oncological Sciences, University of Science and Technology, Daejeon, Korea.
2. Division of Medical Radiation Equipment, Korea Institute of Radiological and Medical Sciences, Seoul, Korea.
3. Department of Radiation Oncology, Kyung Hee University Hospital, Seoul, Korea.
4. Department of Radiation Oncology, Kyung Hee University Hospital at Gangdong, Seoul, Korea.
5. Department of Radiation Oncology, School of Medicine, Yonsei University, Seoul, Korea.
6. Department of Radiation Oncology, Inje Ilsan Paik University Hospital, Goyang, Korea.
7. Department of Bio-Convergence Engineering, Korea University, Seoul, Korea.
8. Research Institute of Clinical Medicine, Kyung Hee University Hospital at Gangdong, Seoul, Korea.