title: Nitrous oxide and vitamin B12.
authors.forename: I
authors.initials: I
authors.lastname: Smith
mesh_terms: D018712:Analgesics, Non-Narcotic; D002648:Child; D000075202:Contraindications; D004305:Dose-Response Relationship, Drug; D006801:Humans; D009609:Nitrous Oxide; D014806:Vitamin B 12 Deficiency / Q000139:chemically induced*
chemical_list: D018712:Analgesics, Non-Narcotic; D009609:Nitrous Oxide