1. Obstructive Upper airway Research (OUaR) Laboratory, Department of Pharmacology, Seoul National University College of Medicine, Seoul, Korea.
2. Department of Biomedical Sciences, Seoul National University College of Medicine, Seoul, Korea.
3. Cancer Research Institute, Seoul National University College of Medicine, Seoul, Korea.
4. Ischemic/Hypoxic Disease Institute, Seoul National University College of Medicine, Seoul, Korea.
5. Department of Otorhinolaryngology-Head and Neck Surgery, Seoul National University Hospital, Seoul, Korea.