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Martins Mda G, dos Santos GH, Sousa Mda S, da Costa JE, Simões VM.Martins Mda G, et al.Rev Bras Ginecol Obstet. 2011 Nov;33(11):354-60. doi: 10.1590/s0100-72032011001100006.Rev Bras Ginecol Obstet. 2011.PMID: 22267114Portuguese.