1. Division of Heavy Ion Clinical Research, Korea Institute of Radiological and Medical Sciences, Seoul, Korea
2. Department of Radiation Oncology, Korea Institute of Radiological and Medical Sciences, Seoul, Korea
3. Department of Bio-convergence Engineering, Korea University, Seoul, Korea
4. Department of Basic Medical Sciences for Radiation Damages, National Institute of Radiological Sciences, Chiba, Japan
5. Department of Radiation Oncology, Samsung Medical Center, Seoul, Korea
6. Research Center for Radiotherapy, Korea Institute of Radiological and Medical Sciences, Seoul, Korea