- Correspondence to Professor Martin J Jarvis, Emeritus Professor of Health Psychology, Department of Epidemiology and Public Health, University College London, 1-19 Torrington Place, London WC1E 6BT, UK;
- Received 23 October 2011
- Accepted 3 April 2012
- Published in print 1 September 2013.
- Published online 10 August 2013.
- Published first 30 May 2012.
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