1. Department of Clinical Laboratory Science, Wonkwang Health Science University, Iksan-si, South Korea.
2. Department of Nursing, Christian College of Nursing, Gwangju, South Korea.
3. Department of Nursing, Chunnam Techno University, Gokseong-gun, South Korea.
4. Department of Dental Hygiene, Honam University, Gwangju, South Korea.
5. Department of Dental Hygiene, College of Health Science, Kangwon National University, Samcheok-si, South Korea.