title: Opioids in labour--no analgesic effect.
authors.affiliation: Anaesthetic Department, St Thomas' Hospital, London, UK.
authors.forename: F
authors.initials: F
authors.lastname: Reynolds
authors.forename: J A
authors.initials: JA
authors.lastname: Crowhurst
mesh_terms: D015360:Analgesia, Epidural; D016362:Analgesia, Obstetrical / Q000379:methods*; D000701:Analgesics, Opioid / Q000008:administration & dosage*; D005260:Female; D006801:Humans; D007743:Labor, Obstetric; D008614:Meperidine / Q000008:administration & dosage; D009020:Morphine / Q000008:administration & dosage; D011247:Pregnancy
chemical_list: D000701:Analgesics, Opioid; D009020:Morphine; D008614:Meperidine