| Affiliation: | 1. Department of Otorhinolaryngology, Gyeongsang National University Changwon Hospital, Gyeongsang National University School of Medicine, Changwon, Republic of Korea;2. Department of Otolaryngology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea;3. Department of Radiation Oncology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea;4. Department of Internal Medicine (Oncology), Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea |
