Sen-Ngam, K., J. Kulvijit, and L. Kongsang. “Health Status and Factors Related to Health Status of Children Attending at the Early Childhood Development Center”. Journal of Research in Nursing-Midwifery and Health Sciences, vol. 32, no. 1, Apr. 2012, pp. 11-26, https://he02.tci-thaijo.org/index.php/nur-psu/article/view/1242.