Jean-Pierre Tourtier1, Daniel Jost2, Philippe Boutinaud3, Pierre Carli4. 1. Paris Fire Brigade Emergency Dept, 1 place Jules Renard, 75017 Paris, France. Electronic address: jeanpierre.tourtier@pompiersparis.fr. 2. Paris Fire Brigade Emergency Dept, 1 place Jules Renard, 75017 Paris, France. Electronic address: daniel.jost@pompiersparis.fr. 3. Paris Fire Brigade Headquarter, 1 place Jules Renard, 75017 Paris, France. Electronic address: philippe.boutinaud@pompiersparis.fr. 4. SAMU de Paris, Hopital Necker, 75015 Paris, France. Electronic address: pierre.carli@aphp.fr.