Affiliation: | 1.Department of Otorhinolaryngology-Head and Neck Surgery, College of Medicine, Soonchunhyang University, Cheonan, Chungcheongnam-do, Republic of Korea ;2.Department of Otorhinolaryngology, Gyeongsang National University Hospital, Jinju, Republic of Korea ;3.Department of Otorhinolaryngology-Head and Neck Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, 81 Irwon-ro, Gangnam-gu, Seoul, 06351, Republic of Korea ; |