title: Fentanyl versus morphine for patient-controlled analgesia.
authors.forename: J W
authors.initials: JW
authors.lastname: Watt
authors.forename: N R
authors.initials: NR
authors.lastname: Soulsby
mesh_terms: D016058:Analgesia, Patient-Controlled / Q000379:methods*; D004311:Double-Blind Method; D005260:Female; D005283:Fentanyl / Q000627:therapeutic use*; D006801:Humans; D009020:Morphine / Q000627:therapeutic use*; D010149:Postoperative Pain / Q000188:drug therapy*
chemical_list: D009020:Morphine; D005283:Fentanyl