[1] Heidelberg Univ Hosp, Dept Anaesthesiol, Neuenheimer Feld 420, D-69120 Heidelberg, Germany
[2] Oslo Univ Hosp, Dept Res & Dev, Div Emergencies & Crit Care, Oslo, Norway
[3] Univ Oslo, Inst Clin Med, Fac Med, Oslo, Norway
[4] Trondheim Reg & Univ Hosp, St Olavs Hosp, Clin Anaesthesia & Intens Care, Trondheim, Norway
[5] Norwegian Univ Sci & Technol, Dept Circulat & Med Imaging, Trondheim, Norway
[6] Oslo Univ Hosp, Dept Anaesthesiol & Intens Care, Div Emergencies & Crit Care, Oslo, Norway
[7] Univ Hosp Schleswig Holstein, Inst Emergency Med, Kiel, Germany
[8] Univ Hosp Schleswig Holstein, Dept Anesthesiol & Intens Care Med, Campus Kiel, Kiel, Germany
[9] Univ Namibia, Sch Med, Windhoek, Namibia
[10] Oslo Univ Hosp, Div Prehosp Serv, Oslo, Norway