title: Opioids: more to learn, improvements to be made.
authors.forename: Charles B
authors.initials: CB
authors.lastname: Berde
authors.forename: Timothy J
authors.initials: TJ
authors.lastname: Brennan
authors.forename: Srinivasa N
authors.initials: SN
authors.lastname: Raja
mesh_terms: D000701:Analgesics, Opioid / Q000008:administration & dosage / Q000627:therapeutic use*; D006801:Humans; D009020:Morphine / Q000008:administration & dosage / Q000627:therapeutic use; D010146:Pain / Q000188:drug therapy*; D010147:Pain Measurement / Q000187:drug effects; D010149:Postoperative Pain / Q000188:drug therapy
chemical_list: D000701:Analgesics, Opioid; D009020:Morphine