1. Research Institute of Hearing Enhancement, Yonsei University Wonju College of Medicine, Wonju, Republic of Korea
2. Department of Biomedical Laboratory Science, College of Health Sciences, Yonsei University, wonju, Republic of Korea
3. Department of Otolaryngology-Head and Neck Surgery, Soonchunhyang University College of Medicine, Seoul, Republic of Korea
4. Department of Thoracic and Cardiovascular Surgery, Yonsei University Wonju College of Medicine, Wonju, Republic of Korea
5. School of Mechanical Engineering, Yonsei University, Seoul, Republic of Korea
6. Department of Otorhinolaryngology, Yonsei University Wonju College of Medicine, Wonju, Republic of Korea