- Edited by Hanneli Piek
- Jonathan Wyatt
- First published June 22, 2009.
Online issue publication
June 22, 2009
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.
2009 BMJ Publishing Group Ltd and the College of Emergency Medicine