Boonpor, J., R. Surasiang, and C. Thunyasirinon. “Iodised Salt Consumption of Primary School Students and Iodine Concentration in Household Salt”. 2019. Journal of Nutrition Association of Thailand, vol. 54, no. 2, Jan. 2022, pp. 46-54, https://he01.tci-thaijo.org/index.php/JNAT/article/view/165207.