Pinto, A. S., Ferreira, W. F., Costa, C., Silva, A. P., Alvarez, E. P., Sousa, R. A., Mansinho, K., Champalimaud, J. L., Araújo, C., & Dias, F. (1991). Immunologic profile of HIV-2 seropositive African individuals (follow-up). Acta Médica Portuguesa, 4, 64S–66S. https://doi.org/10.20344/amp.4475