- Correspondence to Dr James White, Centre for the Development and Evaluation of Complex Interventions for Public Health Improvement, Cardiff University, 7th Floor Neuadd Meirionnydd, Heath Park, Cardiff CF14 4YS, UK;
- Accepted August 18, 2011
- First published November 14, 2011.
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.