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Bastos FI, Bertoni N, Hacker MA; Grupo de Estudos em População, Sexualidade e Aids.Bastos FI, et al. Among authors: bertoni n.Rev Saude Publica. 2008 Jun;42 Suppl 1:109-17. doi: 10.1590/s0034-89102008000800013.Rev Saude Publica. 2008.PMID: 18660930Free article.Portuguese.
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