- Correspondence to Dr EA Richardson, Centre for Research on Environment, Society and Health (CRESH), School of GeoSciences, University of Edinburgh, Edinburgh EH8 9XP, UK;
- Received March 17, 2014
- Revised April 10, 2014
- Accepted May 3, 2014
- First published June 3, 2014.
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.