[Placebo effect in premedication].
D000698:Analgesia; D002986:Clinical Trials as Topic; D006801:Humans; D009020:Morphine / Q000008:administration & dosage; D010919:Placebos / Q000008:administration & dosage*; D011229:Preanesthetic Medication; D013997:Time Factors
D010919:Placebos; D009020:Morphine
Platsebo-efektut v premedikatsiiata.