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 571 OP 571 DO 10.1136/emj.2010.101196 VO 27 IS 8 A1 Walter, Darren YR 2010 UL http://emj.bmj.com/content/27/8/571.abstract AB