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Farias JP, Franco A, Santos KP, Dourado I, Galvão-Castro B.Farias JP, et al. Among authors: santos kp.Rev Bras Ginecol Obstet. 2008 Mar;30(3):135-41. doi: 10.1590/s0100-72032008005000003. Epub 2008 Feb 29.Rev Bras Ginecol Obstet. 2008.PMID: 19145380Portuguese.