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Périssé G, Medronho Rde A, Escosteguy CC.Périssé G, et al.Arq Bras Cardiol. 2010 Apr;94(4):463-71. doi: 10.1590/s0066-782x2010005000009. Epub 2010 Mar 5.Arq Bras Cardiol. 2010.PMID: 20209373Free article.Portuguese.