S. Salih, M. Abdelaziz, A. Mosad, I. Abdelhag, E. RE, and N. Eldawi, “Expression of Programmed Death Ligand-1 and Correlation with Clinicopathological Features and CD8 Infiltration in Breast Cancer”, Sudan JMS, vol. 18, no. 2, pp. 177–189, Jun. 2023.