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de Sousa TF, Nahas MV, Silva DA, Del Duca GF, Peres MA.de Sousa TF, et al. Among authors: nahas mv.Rev Bras Epidemiol. 2011 Jun;14(2):296-309. doi: 10.1590/s1415-790x2011000200011.Rev Bras Epidemiol. 2011.PMID: 21655696Free article.English, Portuguese.