- Correspondence to Dr Peregrine James Dalziel, Emergency Medicine Ultrasound Division, Massachusetts General Hospital, Suite 140, 5 Emerson Place, Boston, MA 02114, USA;
- Accepted April 25, 2012
- First published June 8, 2012.
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.