Singh, S., R. Sinha, and M. Kaushik. “Low Molecular Weight Heparin Prophylaxis: A Boon for Women With History of Placental Mediated Complications”. International Journal of Reproduction, Contraception, Obstetrics and Gynecology, vol. 4, no. 1, Feb. 2017, pp. 210-4, https://www.ijrcog.org/index.php/ijrcog/article/view/1844.