PT - JOURNAL ARTICLE ED - BMJ Publishing Group Ltd and the British Association for Accident & Emergency Medicine TI - BET 3 AID - 10.1136/emj.2010.101329 DP - 2010 Oct 01 TA - Emergency Medicine Journal PG - 790--792 VI - 27 IP - 10 4099 - http://emj.bmj.com/content/27/10/790.short 4100 - http://emj.bmj.com/content/27/10/790.full SO - Emerg Med J2010 Oct 01; 27