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Kress WJ, Erickson DL.Kress WJ, et al.Proc Natl Acad Sci U S A. 2008 Feb 26;105(8):2761-2. doi: 10.1073/pnas.0800476105. Epub 2008 Feb 19.Proc Natl Acad Sci U S A. 2008.PMID: 18287050Free PMC article.No abstract available.