Syed, Sadaf Zahra, Bakhtawar Fatima, Fatima Waheed, Naheed Akhter, and Sadiya Butt. “Association Between Vitamin D Deficiency and Preeclampsia Among Pregnant Females During First Trimester: Vitamin D Deficiency and Preeclampsia”. Pakistan Journal of Health Sciences 4, no. 11 (November 30, 2023): 34–38. Accessed November 23, 2024. https://thejas.com.pk/index.php/pjhs/article/view/1127.