Negm, Safaa Abdussattar, Entesar Fatouh Abd-Elmoneim, and Hanan Fawzy El-Sayed. “The Relationship Between Vitamin D Deficiency and Preeclampsia”. International journal of health sciences 6, no. S8 (October 18, 2022): 5373–5389. Accessed May 2, 2026. https://sciencescholar.us/journal/index.php/ijhs/article/view/13456.