1. Department of Otorhinolaryngology-Head and Neck Surgery, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seongnam 13620, Korea.
2. Department of Otorhinolaryngology-Head and Neck Surgery, Seoul Metropolitan Government - Seoul National University Boramae Medical Center, Seoul National University College of Medicine, Seoul 07061, Korea.
3. Research Center for Sensory Organs, Seoul National University Medical Research Center, Seoul 03080, Korea.
4. Institute of Allergy and Clinical Immunology, Seoul National University Medical Research Center, Seoul 03080, Korea.