Rani, S., P. Goswami, F. Rajpar, S. Awan, and F. Gul. “Clinical Analysis of Ectopic Pregnancy in a Tertiary Care Hospitals”. Journal of Liaquat University of Medical & Health Sciences, vol. 18, no. 04, Jan. 2020, pp. 266-71, http://ojs.lumhs.edu.pk/index.php/jlumhs/article/view/225.