PT - JOURNAL ARTICLE ED - , TI - CORRECTION AID - 10.1136/emj.2007.47860corr1 DP - 2007 Jul 01 TA - Emergency Medicine Journal PG - 521--521 VI - 24 IP - 7 4099 - http://emj.bmj.com/content/24/7/521.2.short 4100 - http://emj.bmj.com/content/24/7/521.2.full SO - Emerg Med J2007 Jul 01; 24