1. East–West Cancer Center, Dunsan Hospital of Oriental Medical College, Daejeon University, Daejeon, South Korea.
2. Department of Radiation Oncology, Konyang University Hospital, Daejeon, South Korea.
3. Department of Information Statistics, Daejeon University, Daejeon, South Korea.
4. Department of Medical Research, Korea Institute of Oriental Medicine, Daejeon, South Korea.