Habibatullah, A. I., U. R. Budihastuti, and V. Widyaningsih. “Meta-Analysis: Effect of Endometriosis and Intrauterine Device Contraceptive on Ectopic Pregnancy”. Journal of Maternal and Child Health, vol. 7, no. 4, July 2022, pp. 387-9, doi:10.26911/thejmch.2022.07.04.03.