Khamsaen, Junchay, Jintana Wongvilairat, and Wittaya Inthaporm. “Urinary Iodine of Primary School Students in Nong Bua Lamphu Province”. Journal of Health Science of Thailand 26, no. S.1 (November 1, 2017): S16-S24. Accessed December 5, 2025. https://thaidj.org/index.php/JHS/article/view/168.