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Verbraak FD, van den Horn GJ, van der Meer JT, Paydafar D, ten Kate FJ, Wertheim-van Dillen PM, Kijlstra A.Verbraak FD, et al.Br J Ophthalmol. 1998 Jul;82(7):748-50. doi: 10.1136/bjo.82.7.748.Br J Ophthalmol. 1998.PMID: 9924364Free PMC article.