- Correspondence to Dr Frédéric Sériès, Department of Pneumology, Institut universitaire de cardiologie et de pneumologie de Québec, 2725 Chemin Sainte-Foy, G1V 4G5 Québec, Canada;
- Received August 26, 2011
- Accepted February 14, 2012
- First published March 6, 2012.
This web only file has been produced by the BMJ Publishing Group from an electronic file supplied by the author(s) and has not been edited for content.
Files in this Data Supplement:
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.