Issa, N. “Najlaa K. Issa Effect of Pregnancy Duration on the Levels of Some Biochemical Parameters in Pregnant Women ”. University of Thi-Qar Journal of Science, Vol. 2, no. 2, May 2019, pp. 96-106, https://www.jsci.utq.edu.iq/index.php/main/article/view/355.