J. C. Forbi, M. D. Esona, H. O. Iperepolu, M. P. Adoga, and S. M. Agwale, “Absence of routine molecular testing and prevalence of HIV-2 infection in regions hardest-hit by HIV infection”, J Infect Dev Ctries, vol. 6, no. 12, pp. 854–859, Dec. 2012.