Babker, A. M., H. K. Fadul Ahmed, R. S. Suliman, A. L. Osman, A. H. Alfeel, P. K. Kandakurti, and S. G. Elzaki. “Strong Association Between Angiotensin I-Converting Enzyme insertion/deletion Polymorphism and Unexplained Recurrent Spontaneous Abortion of Sudanese Women: A Case-Control Study”. Italian Journal of Medicine, vol. 18, no. 2, Apr. 2024, doi:10.4081/itjm.2024.1717.