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Schwab IR, Nassar E, Malaty R, Zarifa A, Korra A, Dawson CR.Schwab IR, et al.Arch Ophthalmol. 1984 Feb;102(2):240-4. doi: 10.1001/archopht.1984.01040030190024.Arch Ophthalmol. 1984.PMID: 6696669
Dawson CR, Schwab IR.Dawson CR, et al. Among authors: schwab ir.Bull World Health Organ. 1981;59(4):493-501.Bull World Health Organ. 1981.PMID: 6976221Free PMC article.