1. Department of Otolaryngology, Gyeongsang National University, Changwon, South Korea
2. Institute of Health Sciences, Gyeongsang National University, Jinju, South Korea
3. Department of Otolaryngology–Head and Neck Surgery, Dong-A University College of Medicine, Busan, South Korea
4. Department of Otorhinolaryngology, Dankook University College of Medicine, Cheonan, South Korea
5. Department of Otorhinolaryngology–Head and Neck Surgery, Gyeongsang National University, Jinju, South Korea
6. Beckman Laser Institute, University of California, Irvine, California, USA