RT Journal Article SR Electronic T1 Authors’ response to letter entitled ‘During a paediatric traumatic cardiac arrest, is ventricular fibrillation a reversible cause like any other?’ JF Emergency Medicine Journal JO Emerg Med J FD BMJ Publishing Group Ltd and the British Association for Accident & Emergency Medicine SP emermed-2018-208370 DO 10.1136/emermed-2018-208370 A1 Jason Smith A1 James Vassallo A1 Mark D Lyttle YR 2019 UL http://emj.bmj.com/content/early/2019/01/10/emermed-2018-208370.abstract AB