RT Journal Article SR Electronic T1 On the edge JF Emergency Medicine Journal JO Emerg Med J FD BMJ Publishing Group Ltd and the British Association for Accident & Emergency Medicine SP 88 OP 88 DO 10.1136/emermed-2012-201997 VO 30 IS 2 A1 Hughes, Geoffrey YR 2013 UL http://emj.bmj.com/content/30/2/88.abstract AB