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