- Correspondence to Dr Stephen Ellis, Diagnostic Imaging, London Chest Hospital, Bonner Road, London E2 9JX, UK;
- Received November 17, 2009
- Accepted August 17, 2010
- First published September 24, 2010.
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.