title: Patient-controlled analgesia.
authors.forename: C A
authors.initials: CA
authors.lastname: Warfield
mesh_terms: D000328:Adult; D000698:Analgesia / Q000379:methods*; D000701:Analgesics, Opioid / Q000008:administration & dosage; D006801:Humans; D007263:Infusions, Parenteral / Q000295:instrumentation; D008297:Male; D008875:Middle Aged; D010149:Postoperative Pain / Q000188:drug therapy; D012646:Self Administration / Q000295:instrumentation
chemical_list: D000701:Analgesics, Opioid