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Penteado FC, Medeiros L, Orellana MD, Palma P, Fontes AM, Takayanagui OM, Covas DT.Penteado FC, et al. Among authors: covas dt.Rev Soc Bras Med Trop. 2006 Mar-Apr;39(2):169-73. doi: 10.1590/s0037-86822006000200007. Epub 2006 May 5.Rev Soc Bras Med Trop. 2006.PMID: 16699644Free article.Portuguese.