Lapying, Phenkhae, Prapa Sang-la, Pikul Sontham, and Voravith Chaimuang. 2018. “Cost-Effectiveness of 12-Month Pit-Fissure Sealant on First Molars”. Journal of Health Science of Thailand 18 (6):826-35. https://thaidj.org/index.php/JHS/article/view/1864.