Prommanee, P., S. Eamsa-ad, and M. Chaykrong. “Management of Anemia in Primary Students, Phra Nakhon Si Ayutthaya Province”. Singburi Hospital Journal, vol. 32, no. 1, July 2023, pp. B53-65, https://he01.tci-thaijo.org/index.php/shj/article/view/262612.