RT Journal Article SR Electronic T1 The question of removing a ventilation bag before defibrillation. JF Journal of Accident & Emergency Medicine JO Arch Emerg Med FD BMJ Publishing Group Ltd and the British Association for Accident & Emergency Medicine SP 286 OP 286 DO 10.1136/emj.15.4.286 VO 15 IS 4 A1 E Cantello A1 T E Davy A1 K L Koenig YR 1998 UL http://emj.bmj.com/content/15/4/286.1.abstract AB