R. E. Nour Eldin Youssef, H. T. El-Weshahi, and M. H. Ashry, “Knowledge, attitudes and beliefs of women in the reproductive age towards prenatal screening for congenital malformations, Alexandria-Egypt”, Int J Reprod Contracept Obstet Gynecol, vol. 6, no. 5, pp. 1707–1712, Apr. 2017.