1. Yonsei University, College of Dentistry, Seoul 03722, Republic of Korea
2. Departments of Biomedical Laboratory Science, College of Health Science, Eulji University, Seongnam, Gyunggi‑Do 13135, Republic of Korea
3. Department of Dental Hygiene, College of Health Science, Eulji University, Seongnam, Gyunggi‑Do 13135, Republic of Korea