1. Department of Otorhinolaryngology-Head and Neck Surgery, College of Medicine, Yeungnam University, Daegu, Korea.
2. Graduate School of Health and Welfare, CHA University, Pocheon, Korea.
3. College of Pharmacy, Yeungnam University, Gyeongsan, Korea.
4. Department of Physiology, College of Medicine, Yeungnam University, Daegu, Korea.
5. Regional Center for Respiratory Diseases, Yeungnam University Medical Center, Daegu, Korea.