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Cho M, Witmer MT, Favarone G, Chan RP, D'Amico DJ, Kiss S.Cho M, et al.Clin Ophthalmol. 2012;6:91-6. doi: 10.2147/OPTH.S28173. Epub 2012 Jan 11.Clin Ophthalmol. 2012.PMID: 22275812Free PMC article.