title: Two decades of improved pain control.
authors.affiliation: The University of Chicago Hospitals, Center for Advanced Medicine, 5841 S. Maryland Avenue, MC 3026, Chicago, IL 60637, USA. rpenn@surgery.bsd.uchicago.edu
authors.forename: Richard D
authors.initials: RD
authors.lastname: Penn
mesh_terms: D000698:Analgesia / Q000379:methods*; D000701:Analgesics, Opioid / Q000008:administration & dosage; D016503:Drug Delivery Systems / Q000379:methods*; D006801:Humans; D015918:Infusion Pumps, Implantable; D007278:Injections, Spinal; D009020:Morphine / Q000008:administration & dosage; D009369:Neoplasms / Q000150:complications*; D010148:Intractable Pain / Q000188:drug therapy* / Q000209:etiology
chemical_list: D000701:Analgesics, Opioid; D009020:Morphine