Letter: Cyanocobalamin.
D000550:Amblyopia / Q000188:drug therapy*; D005260:Female; D006801:Humans; D011247:Pregnancy; D011618:Psychotic Disorders / Q000188:drug therapy*; D011644:Puerperal Disorders / Q000188:drug therapy*; D014805:Vitamin B 12 / Q000627:therapeutic use*; D014806:Vitamin B 12 Deficiency / Q000188:drug therapy*
D014805:Vitamin B 12