title: Controlled trial of morphine vs hydromorphone for patient-controlled analgesia in children with postoperative pain.
authors.forename: Helen W
authors.initials: HW
authors.lastname: Karl
authors.forename: Donald C
authors.initials: DC
authors.lastname: Tyler
authors.forename: Angela W
authors.initials: AW
authors.lastname: Miser
mesh_terms: D000293:Adolescent; D016058:Analgesia, Patient-Controlled / Q000379:methods*; D000701:Analgesics, Opioid / Q000627:therapeutic use*; D002648:Child; D006801:Humans; D004091:Hydromorphone / Q000627:therapeutic use*; D009020:Morphine / Q000627:therapeutic use*; D010149:Postoperative Pain / Q000188:drug therapy*; D055815:Young Adult
chemical_list: D000701:Analgesics, Opioid; D009020:Morphine; D004091:Hydromorphone