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Lu TK, Collins JJ.Lu TK, et al. Among authors: collins jj.Proc Natl Acad Sci U S A. 2009 Mar 24;106(12):4629-34. doi: 10.1073/pnas.0800442106. Epub 2009 Mar 2.Proc Natl Acad Sci U S A. 2009.PMID: 19255432Free PMC article.
Lee HH, Molla MN, Cantor CR, Collins JJ.Lee HH, et al. Among authors: collins jj.Nature. 2010 Sep 2;467(7311):82-5. doi: 10.1038/nature09354.Nature. 2010.PMID: 20811456Free PMC article.