PT - JOURNAL ARTICLE ED - , TI - Sophia DP - 2008 May 01 TA - Emergency Medicine Journal PG - 318--318 VI - 25 IP - 5 4099 - http://emj.bmj.com/content/25/5/318.short 4100 - http://emj.bmj.com/content/25/5/318.full SO - Emerg Med J2008 May 01; 25