[1] Univ Antwerp, B-2020 Antwerp, Belgium
[2] Univ Warwick, Warwick Med Sch, Coventry CV4 7AL, W Midlands, England
[3] Heart England NHS Fdn Trust, Crit Care Unit, Birmingham, W Midlands, England
[4] Univ Crete, Sch Med, Iraklion, Greece
[5] European Soc Emergency Med EuSEM, Eth Comm, Vienna, Austria
[6] Municipal Inst Emergency Med Novi Sad, Novi Sad, Serbia
[7] Univ Hosp Bern, CH-3010 Bern, Switzerland
[8] Univ Bern, Bern, Switzerland
[9] Univ Warwick, Warwick Med Sch, Royal Coll Nursing, Res Inst, Coventry CV4 7AL, W Midlands, England
[10] Univ Athens, Sch Med, GR-11527 Athens, Greece
[11] Royal United Hosp, Dept Anaesthesia & Intens Care Med, Bath BA1 3NG, Avon, England
[12] Univ Bristol, Bath, Avon, England
[13] Univ Hosp, Louvain, Belgium
[14] Univ Ghent, B-9000 Ghent, Belgium
[15] Fed Dept Hlth, Louvain, Belgium
[16] Midwestern Univ, Chicago, IL USA