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Navarrete SA, Wieters EA, Broitman BR, Castilla JC.Navarrete SA, et al.Proc Natl Acad Sci U S A. 2005 Dec 13;102(50):18046-51. doi: 10.1073/pnas.0509119102. Epub 2005 Dec 6.Proc Natl Acad Sci U S A. 2005.PMID: 16332959Free PMC article.