[On a new method in the pharmacological study of the reaction to pain].
D003916:Dextromoramide; D006801:Humans; D008614:Meperidine; D009020:Morphine; D010146:Pain; D012106:Research
D009020:Morphine; D008614:Meperidine; D003916:Dextromoramide
DEXTROMORAMIDE; MEPERIDINE; MORPHINE; PAIN