Pusuwan, P., S. . Likitmaskul, and M. Laohapensang. “Congenital Hypothyroidism Following Maternal I-131 Therapy in Unsuspected Pregnancy”. Siriraj Medical Journal, vol. 61, no. 2, Mar. 2009, pp. 93-95, https://he02.tci-thaijo.org/index.php/sirirajmedj/article/view/246584.