1. Research Team of Medical Physics, Korea Institute of Radiological & Medical Sciences, Seoul, Korea
2. Department of Radiological Science, Kangwon National University, Samcheok, Korea
3. Department of Radiation Oncology, Yonsei Cancer Center, Yonsei University College of Medicine, Daejeon, Korea
4. R&D Institute, Sae-An Enertech Corp, Daejeon, Korea