%0 Journal Article %A Gavin D Perkins %A Matthew W Cooke %T Variability in cardiac arrest survival: the NHS Ambulance Service Quality Indicators %D 2012 %R 10.1136/emermed-2011-200758 %J Emergency Medicine Journal %P 3-5 %V 29 %N 1 %U https://emj.bmj.com/content/emermed/29/1/3.full.pdf