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Brelsford C, Lobo J, Hand J, Bettencourt LMA.Brelsford C, et al. Among authors: lobo j.Proc Natl Acad Sci U S A. 2017 Aug 22;114(34):8963-8968. doi: 10.1073/pnas.1606033114. Epub 2017 May 1.Proc Natl Acad Sci U S A. 2017.PMID: 28461489Free PMC article.
Bettencourt LM, Lobo J, Helbing D, Kühnert C, West GB.Bettencourt LM, et al. Among authors: lobo j.Proc Natl Acad Sci U S A. 2007 Apr 24;104(17):7301-6. doi: 10.1073/pnas.0610172104. Epub 2007 Apr 16.Proc Natl Acad Sci U S A. 2007.PMID: 17438298Free PMC article.