RT Journal Article SR Electronic T1 Correction JF Journal of Accident & Emergency Medicine JO Arch Emerg Med FD BMJ Publishing Group Ltd and the British Association for Accident & Emergency Medicine SP 392 OP 392 DO 10.1136/emj.16.5.392-b VO 16 IS 5 YR 1999 UL http://emj.bmj.com/content/16/5/392.3.abstract AB