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Del Fiol Fde S, Lopes LC, Toledo MI, Barberato-Filho S.Del Fiol Fde S, et al.Rev Soc Bras Med Trop. 2010 Jan-Feb;43(1):68-72. doi: 10.1590/s0037-86822010000100015.Rev Soc Bras Med Trop. 2010.PMID: 20305972Free article.Portuguese.