1. Clinical Vaccine R&D Center, Chonnam National University, Hwasun-gun, Jeonnam, Republic of Korea
2. Department of Microbiology, Chonnam National University Medical School, Hwasun-gun, Jeonnam, Republic of Korea
3. Department of Pharmacology and Dental Therapeutics, School of Dentistry, Chonnam National University, Gwangju, Republic of Korea; Department of Microbiology, Chonnam National University Medical School, Hwasun-gun, Jeonnam, Republic of Korea
4. Department of Oral Microbiology, School of Dentistry, Chonnam National University, Gwangju, Republic of Korea
5. Well Aging Research Center, Samsung Adv. Inst. of Technology (SAIT), Samsung Electronics Co., Ltd. Suwon-si, Gyeonggi-do, Republic of Korea