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Tian CS, Shen YR.Tian CS, et al.Proc Natl Acad Sci U S A. 2009 Sep 8;106(36):15148-53. doi: 10.1073/pnas.0901480106. Epub 2009 Aug 11.Proc Natl Acad Sci U S A. 2009.PMID: 19706483Free PMC article.
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