1. Department of Otolaryngology; Gyeongsang National University; Jinju Republic of Korea
2. Institute of Health Sciences, Gyeongsang National University; Jinju Republic of Korea
3. Department of Otorhinolaryngology - Head and Neck Surgery; Dongguk University Ilsan Hospital; Goyang Republic of Korea
4. Department of Otorhinolaryngology - Head and Neck Surgery; Seoul National University; Seoul Republic of Korea