A. C. Özay, Özlen Emekçi, R. E. Okyay, and A. R. T. Bodur, “Management of Ectopic Pregnancy: Comparison of Systemic Methotrexate Administration and Surgical Treatment; A Retrospective Study”, Gynecol Obstet Reprod Med, vol. 19, no. 2, pp. 86–90, Aug. 2013.