Khemwuttipong, Apapunnee, Vathapong Pantumanee, Piyada Sangwong, and Kanjana Narin. 2022. “Oral health status of children aged 3-12 years in Trang province: comparing before, during and after fluoridated milk project in 2014, 2017 and 2020”. Thai Dental Public Health Journal 27 (September). Bangkok, Thailand:14-27. https://he02.tci-thaijo.org/index.php/ThDPHJo/article/view/255330.