Diabetic retinopathy in identical twins.
D000293:Adolescent; D000328:Adult; D002648:Child; D048909:Diabetes Complications; D003922:Diabetes Mellitus, Type 1; D003930:Diabetic Retinopathy / Q000175:diagnosis / Q000209:etiology / Q000235:genetics* / Q000503:physiopathology; D004200:Diseases in Twins; D005260:Female; D005654:Fundus Oculi; D006801:Humans; D008297:Male; D008875:Middle Aged; D009887:Ophthalmoscopy; D012164:Retinal Diseases / Q000175:diagnosis