title: Extradural opioids in labour.
authors.forename: N L
authors.initials: NL
authors.lastname: Herman
authors.forename: F L
authors.initials: FL
authors.lastname: Hussain
authors.forename: K G
authors.initials: KG
authors.lastname: Knape
authors.forename: J W
authors.initials: JW
authors.lastname: Downing
mesh_terms: D015360:Analgesia, Epidural; D000701:Analgesics, Opioid; D000773:Anesthesia, Obstetrical; D005260:Female; D006801:Humans; D011247:Pregnancy
chemical_list: D000701:Analgesics, Opioid