1. Division of Basic Radiation Bioscience, Korea Institute of Radiological & Medical Sciences, Seoul, South Korea
2. School of Pharmaceutical Sciences, Ewha Womans University, Seoul, South Korea
3. Department of Neurosurgery, Ajou University School of Medicine, Suwon, South Korea
4. School of Information and Communication Engineering, Chungbuk National University, Cheongju, South Korea
5. Department of Radio and Information Communications Engineering, Chungnam National University, Daejeon, South Korea
6. Radio & Satellite Research Division, Electronics and Telecommunications Research Institute, Daejeon, South Korea