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. 1940 Jul;19(4):659–680. doi: 10.1172/JCI101169

STUDIES ON PAIN. MEASUREMENT OF THE EFFECT OF MORPHINE, CODEINE, AND OTHER OPIATES ON THE PAIN THRESHOLD AND AN ANALYSIS OF THEIR RELATION TO THE PAIN EXPERIENCE

H G Wolff 1,2,3, J D Hardy 1,2,3, H Goodell 1,2,3
PMCID: PMC435001  PMID: 16694783

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  1. Hardy J. D., Wolff H. G., Goodell H. STUDIES ON PAIN. A NEW METHOD FOR MEASURING PAIN THRESHOLD: OBSERVATIONS ON SPATIAL SUMMATION OF PAIN. J Clin Invest. 1940 Jul;19(4):649–657. doi: 10.1172/JCI101168. [DOI] [PMC free article] [PubMed] [Google Scholar]

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