Rugg-Gunn, A., Durward, C., Ungchusak, C., & Khitdee, C. (2017). Early Childhood Caries - a major public health problem. Thai Dental Public Health Journal, 22(พิเศษ), 1–2. retrieved from https://he02.tci-thaijo.org/index.php/ThDPHJo/article/view/213237