1. Department of Radiation Oncology; Gyeongsang National University School of medicine and Gyeongsang National University Hospital; Jinju Republic of Korea
2. Institute of Health Sciences; Gyeongsang National University; Jinju Republic of Korea
3. Department of Radiation Oncology; Gyeongsang National University School of medicine and Gyeongsang National University Changwon Hospital; Changwon Republic of Korea
4. Department of Internal Medicine; Gyeongsang National University School of medicine and Gyeongsang National University Hospital; Jinju Republic of Korea
5. Department of Otorhinolaryngology; Gyeongsang National University School of medicine and Gyeongsang National University Hospital; Jinju Republic of Korea