1. Department of Otorhinolaryngology–Head and Neck Surgery, Soonchunhyang University College of Medicine, Seoul Hospital, Seoul 04401, Korea
2. Department of Otorhinolaryngology-Head and Neck Surgery, Seoul National University Hospital, Seoul National University College of Medicine, Seoul 03080, Korea
3. Department of Physiology, Seoul National University College of Medicine, Seoul 03080, Korea
4. Department of Biomedical Sciences, Seoul National University College of Medicine, Seoul 03080, Korea
5. Neuroscience Research Institute, Seoul National University College of Natural Sciences, Seoul 03080, Korea