Futrakul, S., B. Prompukdee, S. Thuybungchim, S. Simmatan, K. Chaiarch, and N. Yotha. “Universal Behavior Prevention Assessment Against Corona Virus Infection and Covid-19 Vaccination of People in Khon Kaen Province”. The Office of Disease Prevention and Control 9th Nakhon Ratchasima Journal, vol. 28, no. 2, May 2022, pp. 5-14, https://he02.tci-thaijo.org/index.php/ODPC9/article/view/253844.