Alemayehu, T. M., and Y. S. Bayile. “Determinants of Calcified Placenta and Its Association With Fetal Outcome Among Mothers Who Gave Birth in Southern Ethiopia, 2018”. International Journal of Research in Medical Sciences, vol. 8, no. 1, Dec. 2019, pp. 64-70, doi:10.18203/2320-6012.ijrms20195885.