Double-blind experimentation in anaesthesiology.
D000698:Analgesia; D000700:Analgesics; D000776:Anesthesiology; D002986:Clinical Trials as Topic; D005260:Female; D006805:Human Experimentation; D006801:Humans; D008297:Male; D008722:Methods; D010919:Placebos; D011584:Psychology; D012737:Sex Factors; D013514:Surgical Procedures, Operative; D014149:Tranquilizing Agents
D000700:Analgesics; D010919:Placebos; D014149:Tranquilizing Agents