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2. Operational Research Dept Vision Problems in the U.S.: A Statistical Analysis (New York) National Society to Prevent Blindness,1980
3. Vision disorders in diabetes;Klein,1985
4. Photocoagulation treatment of proliferative diabetic retinopathy. Clinical application of Diabetic Retinopathy Study (DRS) findings, DRS Report Number 8;Ophthalmology,1981
5. Four risk factors for severe visual loss in diabetic retinopathy. The third report from the Diabetic Retinopathy Study;Arch Ophthalmol,1979