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Irvine AD, Coleman CM, Moore JE, Swensson O, Morgan SJ, McCarthy JH, Smith FJ, Black GC, McLean WH.Irvine AD, et al.Br J Ophthalmol. 2002 Jul;86(7):729-32. doi: 10.1136/bjo.86.7.729.Br J Ophthalmol. 2002.PMID: 12084738Free PMC article.