1. Department of Otorhinolaryngology, Gyeongsang National University, Jinju, Korea.
2. Department of Otolaryngology, Thyroid/Head & Neck Cancer Center of The Dongnam-Institute of Radiological & Medical Sciences (DIRAMS), Busan, Korea.
3. Dong-A University Hospital Regional Cardiocerebrovascular Center, Busan, Korea.
4. Institute of Health Sciences, Gyeongsang National University, Jinju, Korea.