Kaur, Guljit, Sangeeta Pahwa, and Ibadat Preet. “Prevalence of Vitamin D Deficiency in Patients of Pregnancy Induced Hypertension”. International Journal of Reproduction, Contraception, Obstetrics and Gynecology 7, no. 8 (July 26, 2018): 3358–3361. Accessed October 28, 2025. https://www.ijrcog.org/index.php/ijrcog/article/view/4092.