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Tang X, Liu X, Yang L, Sanford LD.Tang X, et al. Among authors: liu x.Behav Brain Res. 2005 May 7;160(1):60-71. doi: 10.1016/j.bbr.2004.11.015. Epub 2004 Dec 30.Behav Brain Res. 2005.PMID: 15836901
Tang X, Yang L, Liu X, Sanford LD.Tang X, et al. Among authors: liu x.Sleep. 2005 Aug 1;28(8):923-30. doi: 10.1093/sleep/28.8.923.Sleep. 2005.PMID: 16218075
Sanford LD, Yang L, Liu X, Tang X.Sanford LD, et al. Among authors: liu x.Brain Res. 2006 Apr 21;1084(1):80-8. doi: 10.1016/j.brainres.2006.02.020. Epub 2006 Mar 20.Brain Res. 2006.PMID: 16546144
Sanford LD, Yang L, Wellman LL, Liu X, Tang X.Sanford LD, et al. Among authors: liu x.Sleep. 2010 May;33(5):621-30. doi: 10.1093/sleep/33.5.621.Sleep. 2010.PMID: 20469804Free PMC article.