Navaneethan, Preethi, Thenmozhi Mani, Pradita Shrestha, Annie Regi, Niranjan Thomas, and Anna Simon. “Vitamin D Status of Pregnant Women and Their Infants in South India: VIPIS Study”. International Journal of Reproduction, Contraception, Obstetrics and Gynecology 8, no. 7 (June 29, 2019): 2820–2825. Accessed November 11, 2025. https://www.ijrcog.org/index.php/ijrcog/article/view/6767.