[1] New Zealand Resuscitat Council, Wellington, New Zealand
[2] Deakin Univ, Sch Nursing & Midwifery, Geelong, Vic, Australia
[3] Deakin Univ, Ctr Qual & Patient Safety Res, Inst Hlth Transformat, Geelong, Vic, Australia
[4] Eastern Hlth Partnership, Ctr Qual & Patient Safety Res, Box Hill, Vic, Australia
[5] Middlemore Hosp, Counties Manukau Dist Hlth Board, Auckland, New Zealand
[6] Imperial Coll NHS Healthcare Trust, Dept Paediat Accid & Emergency, London, England