- Correspondence to Simon Øverland, Research Centre for Health Promotion, Faculty of Psychology, University of Bergen, Christiesgate 13, Bergen 5015, Norway;
- Received October 23, 2009
- Accepted February 23, 2010
- First published June 14, 2010.
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.