Abdullahi, I. N., A. E. Ahmad, and A. U. Emeribe. “Hypothetic Immunopathological Impacts of SARS-CoV-2 and HIV Co-Infection on COVID-19 Severity”. Italian Journal of Medicine, vol. 14, no. 3, May 2020, pp. 189-91, doi:10.4081/itjm.2020.1291.