1. Department of Otorhinolaryngology‑Head and Neck Surgery, National Medical Center, Seoul 04564, Republic of Korea
2. Department of Otorhinolaryngology‑Head and Neck Surgery, Chung‑Ang University College of Medicine, Seoul 06974, Republic of Korea
3. Department of Biochemistry, Chonnam National University Medical School, Hwasun, Jeollanam-do 58128, Republic of Korea
4. Department of Biomedical Engineering, Dankook University College of Medicine, Cheonan, Chungcheongnam-do 16890, Republic of Korea