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Oppitz IN, Cesar JA, Neumann NA.Oppitz IN, et al. Among authors: neumann na.Rev Bras Epidemiol. 2014 Dec;17(4):860-72. doi: 10.1590/1809-4503201400040006.Rev Bras Epidemiol. 2014.PMID: 25388487Free article.English, Portuguese.