[1] Royal Coll Emergency Med, TERN, London, England
[2] Bristol Royal Hosp Children, Emergency Dept, Bristol, Avon, England
[3] Univ Bath, Dept Psychol, Bath, Avon, England
[4] North Bristol NHS Trust, Dept Anaesthesia, Westbury On Trym, England
[5] Salford Royal Hosp NHS Trust, Dept Intens Care, Salford, Lancs, England
[6] Univ West England, Fac Hlth & Appl Sci, Bristol, Avon, England
[7] Plymouth Hosp NHS Fdn Trust, Emergency Dept, Plymouth, Devon, England
[8] Univ Plymouth, Urgent & Emergency Care, Plymouth, Devon, England
[9] Univ Manchester, Manchester, Lancs, England
[10] Univ Coll Dublin, Sch Med, Dublin, Ireland
[11] Childrens Hlth Ireland Crumlin, Emergency Dept, Crumlin, Ireland
[12] Univ Hosp Waterford, Emergency Dept, Waterford, Ireland
[13] St Vincents Univ Hosp, Emergency Dept, Dublin, Ireland
[14] Connolly Hosp Blanchardstown, Emergency Dept, Blanchardstown, Ireland
[15] Coll Anaesthesiologists Ireland, Dublin, Ireland
[16] North Bristol NHS Trust, Emergency Dept, Westbury On Trym, England