Hina, Urooj, Abeera Choudry, Saira Saeed, Faiza Khanam, and Uzma Urooj. “Association of Low Vitamin D Level Status and Risk of Pre-Eclampsia and Preterm Birth in Women Using Low-Dose Aspirin”. Pakistan Armed Forces Medical Journal 72, no. 5 (November 10, 2022): 1576–80. Accessed March 29, 2024. https://pafmj.org/PAFMJ/article/view/5383.