RT Journal Article SR Electronic T1 Gray’s Anatomy, 39th Edition JF Emergency Medicine Journal JO Emerg Med J FD BMJ Publishing Group Ltd and the British Association for Accident & Emergency Medicine SP 492 OP 492 DO 10.1136/emj.2005.027847 VO 23 IS 6 A1 Driscoll, Peter YR 2006 UL http://emj.bmj.com/content/23/6/492.abstract AB