Karpa, Monica, Sita Thakur, Kamal Singh, Jyoti Sharma, and Harsha Chaudhary. “To Compare Serum Vitamin D Status in Pre-Eclamptic and Non-Preeclamptic Pregnant Women in Labour: A Tertiary Care Centre Study of Northern India”. Clinical Journal of Obstetrics and Gynecology 5, no. 1 (January 28, 2022): 013–018. Accessed December 3, 2025. https://www.obstetricgynecoljournal.com/index.php/cjog/article/view/cjog-aid1100.