title: The use of Entonox in the relief of pain.
mesh_terms: D006801:Humans; D009369:Neoplasms / Q000188:drug therapy*; D009609:Nitrous Oxide / Q000008:administration & dosage / Q000627:therapeutic use*; D010148:Intractable Pain; D012138:Respiratory Therapy; D012646:Self Administration
chemical_list: D009609:Nitrous Oxide