RT Journal Article SR Electronic T1 The 1984 Year Book of Anaesthesia JF Archives of Emergency Medicine JO Arch Emerg Med FD BMJ Publishing Group Ltd and the British Association for Accident & Emergency Medicine SP 148 OP 149 DO 10.1136/emj.3.2.148 VO 3 IS 2 A1 A. I. J. Brain YR 1986 UL http://emj.bmj.com/content/3/2/148.abstract AB