1. Department of Biology, College of Natural Science, Chosun University, Gwangju 61452, Korea
2. BK21 FOUR Education Research Group for Age-Associated Disorder Control Technology, Department of Integrative Biological Science, Chosun University, Gwangju 61452, Korea
3. Department of Otolaryngology, Chonnam National University Medical School, Gwangju 61469, Korea