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Barbosa MM, Freire CM, Fenelon LM, Esteves WA, Reis G, Nunes Mdo C.Barbosa MM, et al. Among authors: nunes mdo c.Arq Bras Cardiol. 2009 Jul;93(1):53-8. doi: 10.1590/s0066-782x2009000700010.Arq Bras Cardiol. 2009.PMID: 19838471Free article.English, Portuguese, Spanish.