1. Department of Orthopedic Surgery, Chosun University Hospital, Gwangju, South Korea
2. Laboratory of Orthopedic Research, Chosun University Hospital, Gwangju, South Korea
3. Department of Biomedical Sciences, Chonnam National University Medical School, Gwangju, South Korea
4. Department of Premedical Program, Chosun University Medical School, Donggu, Gwangju, South Korea