Chokviriyakorn, N. “Prevalence of and Factors Associated With Iron Deficiency Among Thai Toddlers Aged 12 - 36 Months in The Well Child Clinic of Luang Pho Taweesak Hospital”. Vajira Medical Journal : Journal of Urban Medicine, vol. 61, no. 1, Mar. 2017, pp. 43-54, https://he02.tci-thaijo.org/index.php/VMED/article/view/194722.