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Letter
Comment on ‘differences in the birth-cohort patterns of gastric cancer and peptic ulcer’
  1. C D Johnson1,
  2. D Fitzsimmons2
  1. 1Surgical Unit, University of Southampton, Southampton University Hospitals NHS Trust Southampton, Southampton, UK
  2. 2School of Health Science Morriston, Swansea, West Glamorgan, UK
  1. Correspondence to Dr Colin D Johnson, Surgical Unit, University of Southampton, Southampton University Hospitals NHS Trust Southampton, Southampton SO16 6YD, UK; c.d.johnson{at}soton.ac.uk

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The paper by Sonnenberg,1 in a recent issue of Gut, describing a strong cohort effect on the incidence of gastric cancer extends our own observation of a strong cohort effect for gastric but not for pancreatic cancer.2 We examined mortality data for England from 1950, and reported the downward slope of cohort incidence of gastric cancer from 1870. …

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  • Competing interests None declared.

  • Provenance and peer review Not commissioned; not externally peer reviewed.

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    Amnon Sonnenberg