1. Department of Otolaryngology, Gangneung Asan HospitalUniversity of Ulsan College of Medicine Gangneung Republic of Korea
2. Department of Family Medicine, Gangneung Asan HospitalUniversity of Ulsan College of Medicine Gangneung Republic of Korea
3. Department of Pathology, Gangneung Asan HospitalUniversity of Ulsan College of Medicine Gangneung Republic of Korea
4. Biomedical Research Center, Gangneung Asan HospitalUniversity of Ulsan College of Medicine Gangneung Republic of Korea