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The nature and ethics of natural experiments


  1. Correspondence to Professor Julius Sim, Arthritis Research UK Primary Care Centre, Institute for Primary Care and Health Sciences, Keele University, Staffordshire ST5 5BG, UK; j.sim{at}
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Dawson A, Sim J
The nature and ethics of natural experiments

Publication history

  • Received May 24, 2014
  • Revised April 17, 2015
  • Accepted June 16, 2015
  • First published July 17, 2015.
Online issue publication 
December 19, 2017

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