Use of nitrous oxide:oxygen mixtures in prehospital emergency care. National Association of Emergency Medical Services Physicians.
D000698:Analgesia / Q000592:standards; D000075202:Contraindications; D004632:Emergency Medical Services; D006801:Humans; D007318:Inservice Training / Q000592:standards; D008509:Medication Systems / Q000592:standards*; D009609:Nitrous Oxide / Q000008:administration & dosage* / Q000592:standards