[Studies on the diabetic retinopathy. 3. Duration of diabetes mellitus].
D000293:Adolescent; D000328:Adult; D000368:Aged; D002648:Child; D048909:Diabetes Complications; D003930:Diabetic Retinopathy / Q000150:complications*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged