1. Department of Radiation Oncology, Chonbuk National University Hospital, Chonbuk National University Medical School, Jeonju, Jeollabukdo 561‑712, Republic of Korea
2. Department of Molecular and Life Science, Hanyang University, Ansan‑si, Gyeonggi 426‑791, Republic of Korea
3. Research Institute of Clinical Medicine of Chonbuk National University-Biomedical Research Institute of Chonbuk National University Hospital, Jeonju, Jeollabukdo 561‑712, Republic of Korea