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Macedo RG, Caroli-Bottino A, Pannain VL, Paschoal JV, Silveira VG.Macedo RG, et al. Among authors: pannain vl.Rev Col Bras Cir. 2011 Jul-Aug;38(4):285-7. doi: 10.1590/s0100-69912011000400014.Rev Col Bras Cir. 2011.PMID: 21971864Free article.Portuguese.