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Raichlen DA, Gordon AD, Foster AD, Webber JT, Sukhdeo SM, Scott RS, Gosman JH, Ryan TM.Raichlen DA, et al. Among authors: ryan tm.J Hum Evol. 2015 Apr;81:1-12. doi: 10.1016/j.jhevol.2015.01.003. Epub 2015 Mar 3.J Hum Evol. 2015.PMID: 25743432
Ryan TM, Shaw CN.Ryan TM, et al.Proc Natl Acad Sci U S A. 2015 Jan 13;112(2):372-7. doi: 10.1073/pnas.1418646112. Epub 2014 Dec 22.Proc Natl Acad Sci U S A. 2015.PMID: 25535352Free PMC article.