RT Journal Article SR Electronic T1 Sophia JF Emergency Medicine Journal JO Emerg Med J FD BMJ Publishing Group Ltd and the British Association for Accident & Emergency Medicine SP 744 OP 744 VO 24 IS 10 A1 Kirsty Dickson-Jardine A1 Jonathan Wyatt YR 2007 UL http://emj.bmj.com/content/24/10/744.abstract AB