Dave, Anupama, Ranjana Patil, Priya Bansal, and Anjali Malhotra. “Role of Serum Progesterone in Threatened Miscarriage”. International Journal of Reproduction, Contraception, Obstetrics and Gynecology 7, no. 10 (September 26, 2018): 4272–4278. Accessed October 26, 2025. https://www.ijrcog.org/index.php/ijrcog/article/view/4823.