1 CHU de Bordeaux, Service d'Anesthésie-Réanimation II, F-33000 Bordeaux, France.
2 Department of Anesthesia, McGill University, MUHC, Institute of Biomedical Engineering, Université de Montréal, Montreal, Canada ITAG Laboratory, Canada Arnold and Blema Steinberg Medical Simulation Centre, Montreal General Hospital, Room: C10-153, 1650 Cedar Avenue, Montreal, Canada H3G 1A4 thomashemmerling@hotmail.com.