RT Journal Article SR Electronic T1 Towards evidence based emergency medicine: best BETs from the Manchester Royal Infirmary. Steroid delivery in croup. JF Journal of Accident & Emergency Medicine JO Arch Emerg Med FD BMJ Publishing Group Ltd and the British Association for Accident & Emergency Medicine SP 229 OP 229 DO 10.1136/emj.15.4.229 VO 15 IS 4 A1 S Maurice YR 1998 UL http://emj.bmj.com/content/15/4/229.1.abstract AB