Pain as a factor in the development of tolerance to morphine analgesia in man.
D000328:Adult; D000698:Analgesia; D004361:Drug Tolerance; D006801:Humans; D008297:Male; D009020:Morphine / Q000627:therapeutic use*; D010146:Pain / Q000188:drug therapy*; D010919:Placebos; D014111:Tourniquets
D010919:Placebos; D009020:Morphine