- Correspondence to Dr Robina Kate Coker, Respiratory Medicine, Hammersmith Hospital, Imperial College Healthcare NHS Trust, London, W12 0HS, UK;
- Received April 4, 2011
- Accepted June 17, 2011
- First published August 19, 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.