Kaewpawong P, Kusol K, Sonpaveerawong J. 2018. “Factors Related to Iron Deficiency Anemia among Pre-school Children in Child Development Centers, Tasala District, Nakhon Si Thammarat Province”. Journal of The Department of Medical Services 43 (5):75-80. https://he02.tci-thaijo.org/index.php/JDMS/article/view/247779.