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Polk TD, Gass JD, Green WR, Novak MA, Johnson MW.Polk TD, et al. Among authors: gass jd.Arch Ophthalmol. 1997 Jul;115(7):878-85. doi: 10.1001/archopht.1997.01100160048007.Arch Ophthalmol. 1997.PMID: 9230828