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Avoiding bias from aggregate measures of exposure
  1. Correspondence to:
 Dr R Gabe
 Cancer Research UK Centre for Epidemiology, Mathematics and Statistics, Wolfson Institute of Preventive Medicine, Charterhouse Square, London EC1M 6BQ, UK; rhian.gabe{at}
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Duffy SW, Jonsson H, Agbaje OF, et al
Avoiding bias from aggregate measures of exposure

Publication history

  • Accepted July 22, 2006
  • First published April 13, 2007.
Online issue publication 
April 27, 2016

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