Mangala, C., J. Fokam, D. M. Bangola, M. Moundanga, and T. Nkoa. “Residual Risk of HIV in African Transfusional Setting: Systematic Review and Meta-Analysis”. International STD Research & Reviews, Vol. 10, no. 2, June 2021, pp. 25-36, doi:10.9734/ISRR/2021/v10i230129.