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Liu Q, Frey RA, Babb-Clendenon SG, Liu B, Francl J, Wilson AL, Marrs JA, Stenkamp DL.Liu Q, et al. Among authors: frey ra.Exp Eye Res. 2007 Jan;84(1):163-75. doi: 10.1016/j.exer.2006.09.011. Epub 2006 Oct 30.Exp Eye Res. 2007.PMID: 17070801Free PMC article.