1. Department of Otorhinolaryngology-Head and Neck Surgery, College of Medicine, Konyang University, Daejeon 35365, Korea.
2. Myunggok Medical Research Institute, College of Medicine, Konyang University, Daejeon 35365, Korea.
3. Priority Research Center, Myunggok Medical Research Institute, College of Medicine, Konyang University, Daejeon 35365, Korea.
4. Department of Biomedical Informatics, College of Medicine, Konyang University, Daejeon 35365, Korea.
5. Department of Medicine, College of Medicine, Konyang University, Daejeon 35365, Korea.
6. Department of Microbiology, College of Medicine, Konyang University, Daejeon 35365, Korea.