PT - JOURNAL ARTICLE ED - , TI - BET 1 AID - 10.1136/emj.2010.097733 DP - 2010 Aug 01 TA - Emergency Medicine Journal PG - 621--622 VI - 27 IP - 8 4099 - http://emj.bmj.com/content/27/8/621.2.short 4100 - http://emj.bmj.com/content/27/8/621.2.full SO - Emerg Med J2010 Aug 01; 27