- Correspondence to Emma Beard, Cancer Research UK Health Behaviour Research Centre, University College London, London WC1E 6BP, UK;
- Received 18 January 2015
- Revised 17 June 2015
- Accepted 24 June 2015
- Published in print 1 October 2015.
- Published online 13 September 2015.
- Published first 24 July 2015.
If you wish to reuse any or all of this article please use the link below which will take you to the Copyright Clearance Center’s RightsLink service. You will be able to get a quick price and instant permission to reuse the content in many different ways.