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Lin WH, Kouyos RD, Adams RJ, Grenfell BT, Griffin DE.Lin WH, et al.Proc Natl Acad Sci U S A. 2012 Sep 11;109(37):14989-94. doi: 10.1073/pnas.1211138109. Epub 2012 Aug 7.Proc Natl Acad Sci U S A. 2012.PMID: 22872860Free PMC article.