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Souza CR, Libério SA, Guerra RN, Monteiro S, Silveira EJ, Pereira AL.Souza CR, et al. Among authors: liberio sa.Rev Assoc Med Bras (1992). 2005 Sep-Oct;51(5):285-9. doi: 10.1590/s0104-42302005000500021. Epub 2005 Oct 31.Rev Assoc Med Bras (1992). 2005.PMID: 16270147Free article.Portuguese.