PT - JOURNAL ARTICLE AU - Geoff Hughes TI - Primary survey AID - 10.1136/emj.2011.111963 DP - 2011 Mar 01 TA - Emergency Medicine Journal PG - 177--177 VI - 28 IP - 3 4099 - http://emj.bmj.com/content/28/3/177.short 4100 - http://emj.bmj.com/content/28/3/177.full SO - Emerg Med J2011 Mar 01; 28