shehwar, Dur e, and Lubna Zubair. “Association of Risk Factors of Ectopic Pregnancy”. The International Journal of Frontier Sciences 1, no. 2 (July 1, 2017): 26–32. Accessed September 20, 2024. https://publie.frontierscienceassociates.com.pk/index.php/tijfs/article/view/21.