Lueprasitsakul, W., Lueprasitsakul, P., Bangprathaiya, P., & Bhuripanyo, P. (2013). Measurement of Serum Free Thyroxine by RIA in Normal Populations and During Pregnancy. Srinagarind Medical Journal, 4(2), 77–82. Retrieved from https://li01.tci-thaijo.org/index.php/SRIMEDJ/article/view/13486