- Correspondence to: Dr A Swann Department of Anaesthesia, Royal Perth Hospital, Box X2213 GPO, Perth WA 6847, Australia;
- Accepted 2 February 2007
- Published in print 1 May 2007.
- Published online 23 April 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.