Jassim S, Raid M. H. Al-Salih. Role of Folic Acid, Vitamin D, and Progesterone in Pregnancy and Threatened Abortion. UTJsci [Internet]. 2023 Dec. 22 [cited 2025 Mar. 29];10(2):27-32. Available from: https://jsci.utq.edu.iq/index.php/main/article/view/1066