Dihydrocodeine: an investigation into its use in general anaesthesia.
D000758:Anesthesia; D000768:Anesthesia, General; D000776:Anesthesiology; D003061:Codeine / Q000031:analogs & derivatives; D006801:Humans
C014481:dihydrocodeine; D003061:Codeine
ANESTHESIA; CODEINE/related compounds