title: Patient-controlled analgesia: a case study.
mesh_terms: D000368:Aged; D000701:Analgesics, Opioid / Q000008:administration & dosage*; D005260:Female; D006801:Humans; D007260:Infusion Pumps; D010146:Pain / Q000188:drug therapy*; D012646:Self Administration
chemical_list: D000701:Analgesics, Opioid