CHOW, B F Vitamin B12 serum levels and diabetic retinopathy. [electronic resource] - Proceedings of the Society for Experimental Biology and Medicine. Society for Experimental Biology and Medicine (New York, N.Y.) Oct 1954 - 38-9 p. digital Publication Type: Journal Article ISSN: 0037-9727 Standard No.: 10.3181/00379727-87-21277 doi Subjects--Topical Terms: BloodCorrinoidsDiabetes Mellitus--bloodDiabetic RetinopathyDiseaseHumansRetinaRetinal DiseasesVitamin B 12--blood