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Hughes M, Gerber S, Wills MA.Hughes M, et al. Among authors: wills ma.Proc Natl Acad Sci U S A. 2013 Aug 20;110(34):13875-9. doi: 10.1073/pnas.1302642110. Epub 2013 Jul 24.Proc Natl Acad Sci U S A. 2013.PMID: 23884651Free PMC article.
Adamowicz SJ, Purvis A, Wills MA.Adamowicz SJ, et al. Among authors: wills ma.Proc Natl Acad Sci U S A. 2008 Mar 25;105(12):4786-91. doi: 10.1073/pnas.0709378105. Epub 2008 Mar 17.Proc Natl Acad Sci U S A. 2008.PMID: 18347335Free PMC article.