- Correspondence to Dr Sean Semple, Scottish Centre for Indoor Air, Division of Applied Health Sciences, University of Aberdeen, Aberdeen AB25 2ZP, UK;
- Received June 23, 2011
- Accepted October 5, 2011
- First published October 20, 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.