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 225 OP 228 DO 10.1136/emj.18.3.225 VO 18 IS 3 A1 Wyatt, Jonathan A1 Izquierdo-Martin, Andres YR 2001 UL http://emj.bmj.com/content/18/3/225.abstract AB