Affiliation: | 1. Department of Otorhinolaryngology–Head and Neck Surgery, College of Medicine, Yeungnam University, Daegu, South Korea;2. Department of Otorhinolaryngology–Head and Neck Surgery, Gumi CHA Hospital, CHA University, Gumi, South Korea;3. Department of Physiology, College of Medicine, Yeungnam University, Daegu, South Korea |