Danpradit, P. and Prasitsary, N. 2023. Effects of the Health Belief Model Educational Program on Perceptions and Preventive Behaviors of COVID-19 in Secondary School Students : Effect of Educational Program on Prevention Behavior of COVID-19. Vajira Medical Journal : Journal of Urban Medicine. 67, 3 (Sep. 2023), 575–582. DOI:https://doi.org/10.14456/vmj.2023.19.