RT Journal Article SR Electronic T1 JournalScan JF Emergency Medicine Journal JO Emerg Med J FD BMJ Publishing Group Ltd and the British Association for Accident & Emergency Medicine SP 435 OP 436 DO 10.1136/emj.19.5.435 VO 19 IS 5 A1 Jonathan Wyatt A1 Fionn Bellis YR 2002 UL http://emj.bmj.com/content/19/5/435.abstract AB