RT Journal Article SR Electronic T1 Ketamine in severe acute asthma. JF Archives of Emergency Medicine JO Arch Emerg Med FD BMJ Publishing Group Ltd and the British Association for Accident & Emergency Medicine SP 291 OP 292 DO 10.1136/emj.8.4.291 VO 8 IS 4 A1 Turnpenny, P D A1 Nash, S F YR 1991 UL http://emj.bmj.com/content/8/4/291.abstract AB