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Braga TB, Pfaffenbach G, Weiss DP, Barros MB, Bergsten-Mendes G.Braga TB, et al. Among authors: barros mb.Sao Paulo Med J. 2004 Mar 4;122(2):48-52. doi: 10.1590/s1516-31802004000200003. Epub 2004 Jul 5.Sao Paulo Med J. 2004.PMID: 15257359Free article.