RT Journal Article SR Electronic T1 The mark of the dragon JF Emergency Medicine Journal JO Emerg Med J FD BMJ Publishing Group Ltd and the British Association for Accident & Emergency Medicine SP 812 OP 812 DO 10.1136/emj.2008.063354 VO 26 IS 11 A1 P Wheat A1 R L Boon YR 2009 UL http://emj.bmj.com/content/26/11/812.abstract AB