1. Moneykey Co., Ltd. Gwangju 62399, Korea
2. Department of Biomedical Engineering, Chonnam National University, Gwangju 61186, Korea
3. Dental Healthcare & Clinical Trial Center, College of Dentistry, Chosun University, Gwangju 61452, Korea
4. Department of Oral Microbiology, School of Dentistry, Chonnam National University, Gwangju 61186, Korea