RT Journal Article SR Electronic T1 Current Practice of Emergency Medicine JF Archives of Emergency Medicine JO Arch Emerg Med FD BMJ Publishing Group Ltd and the British Association for Accident & Emergency Medicine SP 257 OP 258 DO 10.1136/emj.10.3.257 VO 10 IS 3 A1 A. D. Redmond YR 1993 UL http://emj.bmj.com/content/10/3/257.abstract AB