title: Advances in cancer pain management: a review of patient-controlled analgesia.
mesh_terms: D000701:Analgesics, Opioid / Q000008:administration & dosage* / Q000627:therapeutic use; D006801:Humans; D009369:Neoplasms / Q000503:physiopathology*; D010146:Pain / Q000188:drug therapy*; D012646:Self Administration
chemical_list: D000701:Analgesics, Opioid