- Correspondence to Professor Allen Hutchinson, Section of Public Health, School of Health and Related Research (ScHARR), University of Sheffield, Regent Court, 30 Regent St., Sheffield S1 4DA, UK;
- Received January 20, 2013
- Revised June 19, 2013
- Accepted June 22, 2013
- First published July 18, 2013.
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.