title: The course of diabetic retinopathy. A longitudinal study.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D003930:Diabetic Retinopathy / Q000473:pathology; D005123:Eye / Q000473:pathology; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D008722:Methods; D008875:Middle Aged; D010781:Photography; D011446:Prospective Studies; D013223:Statistics as Topic; D013997:Time Factors