Nitrous oxide and vitamin B12.
Smith
I
I
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*
D018712:Analgesics, Non-Narcotic; D009609:Nitrous Oxide