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Gong P, Peersen OB.Gong P, et al. Among authors: peersen ob.Proc Natl Acad Sci U S A. 2010 Dec 28;107(52):22505-10. doi: 10.1073/pnas.1007626107. Epub 2010 Dec 10.Proc Natl Acad Sci U S A. 2010.PMID: 21148772Free PMC article.