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Standish AJ, Stroeher UH, Paton JC.Standish AJ, et al. Among authors: paton jc.Proc Natl Acad Sci U S A. 2005 May 24;102(21):7701-6. doi: 10.1073/pnas.0409377102. Epub 2005 May 16.Proc Natl Acad Sci U S A. 2005.PMID: 15897461Free PMC article.