[1] Univ Paris, Emergency Dept, Paris, France
[2] Univ Paris, PreHospital EMS, Lariboisieres Hosp, AP HP, Paris, France
[3] Addenbrookes Hosp, Emergency Dept, Cambridge, England
[4] Univ Paris, MASCOT, Inserm U942, Paris, France
[5] Dalhousie Univ, Horizon Hlth Network, Dept Emergency Med, St John, NB, Canada
[6] Hop Lariboisiere, Serv Accueil Urgences, SMUR, 2 Rue Ambroise Pare, F-75010 Paris, France