@article{casseb_hong_gonsalez_brígido_duarte_michael-hendry_1998,  title={Two variants of HIV-1 B serotype are transmitted heterosexually in São Paulo, Brazil},  volume={31},  ISSN={0100-879X},  url={https://doi.org/10.1590/S0100-879X1998001000002},  DOI={10.1590/S0100-879X1998001000002},  number={10},  journal={Brazilian Journal of Medical and Biological Research},  publisher={Associação Brasileira de Divulgação Científica},  author={Casseb, J. and Hong, M.A. and Gonsalez, C. and Brígido, L.F. and Duarte, A.J.S. and Michael-Hendry, R.},  year={1998},  month={Oct},  pages={1243–1246} }