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Phan ML, Vicario DS.Phan ML, et al.Proc Natl Acad Sci U S A. 2010 Feb 2;107(5):2301-6. doi: 10.1073/pnas.0900091107. Epub 2010 Jan 19.Proc Natl Acad Sci U S A. 2010.PMID: 20133876Free PMC article.
Phan ML, Pytte CL, Vicario DS.Phan ML, et al.Proc Natl Acad Sci U S A. 2006 Jan 24;103(4):1088-93. doi: 10.1073/pnas.0510136103. Epub 2006 Jan 17.Proc Natl Acad Sci U S A. 2006.PMID: 16418265Free PMC article.