title: [Studies on the appropriate dose of new analgesic; butorphanol for balanced anesthesia (author's transl)].
mesh_terms: D000328:Adult; D000758:Anesthesia; D002077:Butorphanol / Q000008:administration & dosage*; D005260:Female; D006801:Humans; D008875:Middle Aged; D009019:Morphinans / Q000008:administration & dosage*; D009609:Nitrous Oxide / Q000008:administration & dosage
chemical_list: D009019:Morphinans; D009609:Nitrous Oxide; D002077:Butorphanol