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von Zuben MV, Derchain SF, Sarian LO, Westin MC, Thuler LC, Zeferino LC.von Zuben MV, et al. Among authors: zeferino lc.Sao Paulo Med J. 2007 Jan 4;125(1):42-5. doi: 10.1590/s1516-31802007000100008.Sao Paulo Med J. 2007.PMID: 17505684Free PMC article.