Evaluation of a method for assessing potent analgesics.
D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000698:Analgesia; D001835:Body Weight; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009020:Morphine / Q000494:pharmacology*; D010919:Placebos; D012737:Sex Factors
D010919:Placebos; D009020:Morphine