1. Department of Otorhinolaryngology-Head and Neck Surgery, College of Medicine, Hallym University, Chuncheon, Republic of Korea;
2. Department of Otorhinolaryngology-Head and Neck Surgery, College of Medicine, Inje University, Busan, Republic of Korea;
3. Department of Anesthesiology and Pain Medicine, Kangnam Sacred Heart Hospital, Hallym University College of Medicine, Seoul, Republic of Korea;
4. Department of Anesthesiology and Pain Medicine, College of Medicine, Hallym University, Chuncheon, Republic of Korea;
5. Institute of New Frontier Research, Hallym University College of Medicine, Chuncheon, Republic of Korea