- Correspondence to Dr John Swiston, Division of Respiratory Medicine, University of British Columbia, Vancouver General Hospital 2775 Laurel Street, 7th Floor, Vancouver, BC V5Z 1M9, Canada;
- Accepted January 21, 2011
- First published February 25, 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.