1. Department of Anatomy and Neurobiology, School of Medicine, Kyung Hee University, Seoul, Republic of Korea;
2. Department of Obstetrics and Gynecology, St. Vincent’s Hospital, the Catholic University of Korea, Suwon, Korea;
3. Department of Otorhinolaryngology-Head and Neck Surgery, Myongji Hospital, Hanyang University Medical Center, Goyang, Republic of Korea;
4. Department of Otolaryngology-Head and Neck Surgery, School of Medicine, Kyung Hee University, Seoul, Republic of Korea;
5. Medical Research Center for Bioreaction to Reactive Oxygen Species and Biomedical Science Institute, School of Medicine, Kyung Hee University, Seoul, Republic of Korea