Aphthous ulceration and vitamin B12 deficiency.
D000328:Adult; D000368:Aged; D005260:Female; D006801:Humans; D013281:Stomatitis, Aphthous / Q000188:drug therapy / Q000209:etiology*; D014805:Vitamin B 12 / Q000627:therapeutic use; D014806:Vitamin B 12 Deficiency / Q000150:complications* / Q000188:drug therapy
D014805:Vitamin B 12