RT Journal Article SR Electronic T1 Primary survey JF Emergency Medicine Journal JO Emerg Med J FD BMJ Publishing Group Ltd and the British Association for Accident & Emergency Medicine SP 547 OP 547 DO 10.1136/emj.2009.080051 VO 26 IS 8 A2 Hughes, Geoff YR 2009 UL http://emj.bmj.com/content/26/8/547.abstract AB