1 Department of anaesthesia and intensive care, hôpital Nord, Aix-Marseille université, AP-HM, chemin des Bourrely, 13015 Marseille, France. Electronic address: marc.leone@ap-hm.fr.
2 Department of anaesthesia and intensive care, hôpital Nord, Aix-Marseille université, AP-HM, chemin des Bourrely, 13015 Marseille, France.
3 Department of anaesthesia and intensive care, institut Paoli-Calmettes, 13009 Marseille, France.