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Oliveira PM, Oliveira RP, Travessa IÉ, Gomes MV, Santos ML, Grassi MF.Oliveira PM, et al. Among authors: grassi mf.Sao Paulo Med J. 2010 Jul;128(4):197-201. doi: 10.1590/s1516-31802010000400004.Sao Paulo Med J. 2010.PMID: 21120429Free PMC article.
Grassi MF, Olavarria VN, Kruschewsky Rde A, Mascarenhas RE, Dourado I, Correia LC, de Castro-Costa CM, Galvão-Castro B.Grassi MF, et al.J Med Virol. 2011 Jul;83(7):1269-74. doi: 10.1002/jmv.22087.J Med Virol. 2011.PMID: 21567429