Vitamin B12 excretion and diabetic retinopathy.
D001826:Body Fluids; D045728:Corrinoids; D003920:Diabetes Mellitus / Q000652:urine*; D003930:Diabetic Retinopathy; D006397:Hematinics; D006801:Humans; D014805:Vitamin B 12 / Q000652:urine*
D045728:Corrinoids; D006397:Hematinics; D014805:Vitamin B 12
DIABETES MELLITUS/urine in; VITAMIN B12/in urine