kuay, lim kuang. “Inadequate Iodine Intake Among School Children in Terengganu- Findings from the National Iodine Deficiency Disorder Survey 2008”. International Journal of Public Health Research, vol. 3, no. 1, Mar. 2013, pp. 198-03, https://spaj.ukm.my/ijphr/index.php/ijphr/article/view/150.