title: What is "relative analgesia?".
authors.forename: M C
authors.initials: MC
authors.lastname: Howes
mesh_terms: D000698:Analgesia / Q000379:methods*; D018712:Analgesics, Non-Narcotic; D002648:Child; D004636:Emergency Service, Hospital; D006801:Humans; D009609:Nitrous Oxide; D009626:Terminology as Topic
chemical_list: D018712:Analgesics, Non-Narcotic; D009609:Nitrous Oxide