A. Babayo, A. O. Azeez, Y. M. Sabo, I. N. Abdullahi, and A. Dangana, “Serosurvey and Cellular Immune Status of HTLV-1/2 and HIV Co-infections in Bauchi State, Nigeria”, Eur J Clin Exp Med, vol. 17, no. 4, pp. 289–294, Dec. 2019.