1. Department of Otorhinolaryngology-Head and Neck Surgery, Seoul National University College of Medicine, Seoul National University Boramae Medical Center, Seoul, Korea.
2. Department of Otorhinolaryngology-Head and Neck Surgery, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea.
3. Sensory Organ Research Institute, Seoul National University Medical Research Center, Seoul, Korea.
4. Obstructive Upper Airway Research Laboratory, Department of Pharmacology, Seoul National University College of Medicine, Seoul, Korea.
5. Cancer Research Institute, Seoul National University College of Medicine, Seoul, Korea.
6. Ischemic/Hypoxic Disease Institute, Seoul National University College of Medicine, Seoul, Korea.
7. Department of Biomedical Sciences, Seoul National University Graduate School, Seoul, Korea.