Jahagirdar, S. S., and P. S. Junghare. “A Rare Case of Bilateral Spontaneous Tubal Ectopic Pregnancy”. International Journal of Reproduction, Contraception, Obstetrics and Gynecology, vol. 3, no. 4, Feb. 2017, pp. 1116-8, https://www.ijrcog.org/index.php/ijrcog/article/view/2241.