Nahar, K., T. Talukder, S. Sultana, and M. A. Hossain. “Study on Risk Factors, Clinical Presentation & Operative Management of Ectopic Pregnancy”. Bangladesh Journal of Obstetrics &Amp; Gynaecology, vol. 28, no. 1, Oct. 2016, pp. 9-14, doi:10.3329/bjog.v28i1.29932.