1 Department of Physical Medicine & Rehabilitation, School of Medicine, Kyung Hee University, Seoul, Republic of Korea.
2 Medical Research Center for Bioreaction to Reactive Oxygen Species and Biomedical Science Institute, Department of Biochemistry and Molecular Biology, School of Medicine, Kyung Hee University, Seoul, Republic of Korea.
3 Department of Otorhinolaryngology-Head and Neck Surgery, School of Medicine, Kyung Hee University, Seoul, Republic of Korea.