RT Journal Article SR Electronic T1 Journal scan JF Emergency Medicine Journal JO Emerg Med J FD BMJ Publishing Group Ltd and the British Association for Accident & Emergency Medicine SP 135 OP 137 DO 10.1136/emj.18.2.135 VO 18 IS 2 A1 Jonathan Wyatt A1 Rakesh Khanna YR 2001 UL http://emj.bmj.com/content/18/2/135.abstract AB