1. Department of Otolaryngology, Thyroid/Head&Neck Cancer Center of The Dongnam Institute of Radiological & Medical Sciences (DIRAMS), Pusan, Korea.
2. Department of Otolaryngology, Gyeongsang National University, Jinju, Korea.
3. Department of Pathology, Gyeongsang National University, Jinju, Korea.
4. Institute of Health Sciences, Gyeongsang National University, Jinju, Korea.