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Dougherty BE, Nichols JJ, Nichols KK.Dougherty BE, et al. Among authors: nichols jj, nichols kk.Invest Ophthalmol Vis Sci. 2011 Nov 7;52(12):8630-5. doi: 10.1167/iovs.11-8027.Invest Ophthalmol Vis Sci. 2011.PMID: 21948646Free PMC article.
King-Smith PE, Fink BA, Fogt N, Nichols KK, Hill RM, Wilson GS.King-Smith PE, et al. Among authors: nichols kk.Invest Ophthalmol Vis Sci. 2000 Oct;41(11):3348-59.Invest Ophthalmol Vis Sci. 2000.PMID: 11006224