- Correspondence to: Dr J Car Department of Primary Care and Social Medicine, Imperial College London, London W6 8RP, UK;
- Accepted February 11, 2006
- First published June 2, 2006.
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.