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Hallgrímsson B, Lieberman DE, Liu W, Ford-Hutchinson AF, Jirik FR.Hallgrímsson B, et al. Among authors: lieberman de.Evol Dev. 2007 Jan-Feb;9(1):76-91. doi: 10.1111/j.1525-142X.2006.00139.x.Evol Dev. 2007.PMID: 17227368
Lieberman DE, Carlo J, Ponce de León M, Zollikofer CP.Lieberman DE, et al.J Hum Evol. 2007 Jun;52(6):647-62. doi: 10.1016/j.jhevol.2006.12.005. Epub 2007 Jan 5.J Hum Evol. 2007.PMID: 17298840