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The Journal of Hygiene logoLink to The Journal of Hygiene
. 1938 Jul;38(4):432–445. doi: 10.1017/s002217240001130x

An investigation of the effects of certain substitutes for morphine and heroin upon the passage of food along the alimentary tract of the human subject

G Norman Myers, S Whately Davidson
PMCID: PMC2199591  PMID: 20475443

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