Rahman, M. H., M. A. Chowdhury, and M. T. Alam. “Serum Thyroxine & Triiodothyronine Levels in Normal Pregnancy and Pre-Eclampsia”. TAJ: Journal of Teachers Association, vol. 20, no. 1, Aug. 2009, pp. 6-10, doi:10.3329/taj.v20i1.3082.