- Correspondence to: Dr H Mahdi Respiratory Consultant Physician, Barnsley Hospital NHS Foundation Trust, Gawber Road, Barnsley, South Yorkshire S75 2EP, UK;
- Accepted January 17, 2007
- First published June 20, 2007.
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.