Rasdjarmrearnsook, Aimorn, Piyanit Tharmaphornpilas, Porpit Varinsathein, and Wirat Ponlead. “Vaccine Coverage Survey Among the 1st and the 6th Grade Students, 2008”. Journal of Health Science of Thailand 19, no. 2 (December 27, 2017): 249–261. Accessed December 6, 2025. https://thaidj.org/index.php/JHS/article/view/1323.