RT Journal Article SR Electronic T1 Author’s response JF Emergency Medicine Journal JO Emerg Med J FD BMJ Publishing Group Ltd and the British Association for Accident & Emergency Medicine SP 122 OP 122 DO 10.1136/emj.2007.054494 VO 25 IS 2 A1 Kendall, J M YR 2008 UL http://emj.bmj.com/content/25/2/122.4.abstract AB