Experimental pain in general practice.
D001241:Aspirin / Q000494:pharmacology*; D006801:Humans; D009020:Morphine / Q000494:pharmacology; D010146:Pain / Q000139:chemically induced*; D059408:Pain Management; D010817:Physician-Patient Relations; D011188:Potassium / Q000494:pharmacology; D011611:Psychosomatic Medicine
D009020:Morphine; D001241:Aspirin; D011188:Potassium