“…Most of the studies (49/73, 67.1 %) were published in the last ten years, with the oldest published case dating back to 1984. 12 other publications were analysed separately due to ambiguity over the temporal sequence of events (whether ECPR was necessary to achieve ROSC or whether ROSC had been achieved with conventional CPR instead) [Supplement 2] [82] , [83] , [84] , [85] , [86] , [87] , [88] , [89] , [90] , [91] , [92] , [93] .…”