title: Epidural opioids--the preferred route of administration.
authors.forename: C
authors.initials: C
authors.lastname: Campbell
mesh_terms: D006801:Humans; D007268:Injections, Epidural; D009294:Narcotics / Q000008:administration & dosage*; D010149:Postoperative Pain / Q000188:drug therapy*
chemical_list: D009294:Narcotics