title: Respiratory depression and spinal opioids.
authors.forename: A
authors.initials: A
authors.lastname: Ravalia
authors.forename: P N
authors.initials: PN
authors.lastname: Robinson
mesh_terms: D003932:Heroin / Q000008:administration & dosage / Q000627:therapeutic use*; D006801:Humans; D007278:Injections, Spinal; D010149:Postoperative Pain / Q000188:drug therapy*
chemical_list: D003932:Heroin