title: Patient-controlled analgesia in clinical pain research measurement.
authors.affiliation: School of Nursing, University of Pennsylvania, Philadelphia.
authors.forename: M
authors.initials: M
authors.lastname: Giuffre
authors.forename: A
authors.initials: A
authors.lastname: Keane
authors.forename: S M
authors.initials: SM
authors.lastname: Hatfield
authors.forename: W
authors.initials: W
authors.lastname: Korevaar
mesh_terms: D006801:Humans; D007260:Infusion Pumps; D009020:Morphine / Q000008:administration & dosage*; D010149:Postoperative Pain / Q000188:drug therapy*; D012646:Self Administration / Q000295:instrumentation*
chemical_list: D009020:Morphine