title: Letter: Vitamin B12 in late-onset psychosis of childhood.
mesh_terms: D002648:Child; D002653:Child Behavior Disorders / Q000188:drug therapy*; D005260:Female; D006801:Humans; D011618:Psychotic Disorders / Q000188:drug therapy*; D014805:Vitamin B 12 / Q000008:administration & dosage / Q000627:therapeutic use*
chemical_list: D014805:Vitamin B 12