1. Department of Dermatology, Seoul National University Bundang Hospital, Seongnam, Korea.
2. Department of Dermatology, Kyung Hee University Hospital at Gangdong, Kyung Hee University College of Medicine, Seoul, Korea.
3. Department of Dermatology, Seoul National University College of Medicine, Seoul, Korea.
4. Department of Otorhinolaryngology-Head & Neck Surgery, Seoul National University Bundang Hospital, Seongnam, Korea.
5. Department of Otorhinolaryngology-Head & Neck Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea.