[1] Hallym Univ, Dept Otorhinolaryngol Head & Neck Surg, Sacred Heart Hosp, Anyang 14068, South Korea
[2] Suseo Seoul ENT Clin & MD Analyt, 10 Bamgogae ro 1-gil, Seoul 06349, South Korea
[3] Hallym Univ, Coll Med, Dept Otorhinolaryngol Head & Neck Surg, Sacred Heart Hosp, 22 Gwanpyeong Ro 170Beon gil, Anyang 14068, South Korea