Meiyappan, K., Dhiman, P., Rajendiren, S., Thayagarajan, K., & Raghavan S, S. (2017). Serum nitric oxide and homocysteine as biomarkers of ectopic pregnancy. International Journal of Reproduction, Contraception, Obstetrics and Gynecology, 4(1), 66–70. Retrieved from https://www.ijrcog.org/index.php/ijrcog/article/view/1811