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Dias JC, Prata A, Schofield CJ.Dias JC, et al. Among authors: schofield cj.Rev Soc Bras Med Trop. 2002 Nov-Dec;35(6):669-78. doi: 10.1590/s0037-86822002000600021. Epub 2003 Feb 26.Rev Soc Bras Med Trop. 2002.PMID: 12612753Free article.Portuguese.