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Invest. Ophthalmol. Vis. Sci.. 1991; 32(9):2511-2514. doi:
Invest. Ophthalmol. Vis. Sci.. 1990; 31(10):2164-2170. doi:
Invest. Ophthalmol. Vis. Sci.. 1988; 29(12):1866-1870. doi:
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