title: Epidural butorphanol for the relief of postoperative pain.
authors: M
authors: M
authors: Lippmann
authors: M S
authors: MS
authors: Mok
mesh_terms: D002077:Butorphanol / Q000008:administration & dosage*; D006801:Humans; D007268:Injections, Epidural; D009019:Morphinans / Q000008:administration & dosage*; D010149:Postoperative Pain / Q000188:drug therapy*
chemical_list: D009019:Morphinans; D002077:Butorphanol