The lancet - saturday 26 June 1982.
D002986:Clinical Trials as Topic; D003061:Codeine / Q000008:administration & dosage / Q000031:analogs & derivatives* / Q000494:pharmacology; D004311:Double-Blind Method; D005260:Female; D006801:Humans; D006930:Hyperalgesia / Q000139:chemically induced*; D006941:Hyperesthesia / Q000139:chemically induced*; D007263:Infusions, Parenteral; D008297:Male; D008963:Molar / Q000601:surgery; D010149:Postoperative Pain / Q000188:drug therapy*; D011897:Random Allocation; D014095:Tooth, Impacted / Q000601:surgery*
C014481:dihydrocodeine; D003061:Codeine