[1] CHU Ambroise Pare, Serv Anesthesie Reanimat, 9 Ave Charles de Gaulle, F-92100 Boulogne, France
[2] Univ Versailles St Quentin Yvelines, Unite Inserm 987, 55 Ave Paris, F-78000 Versailles, France
[3] CHU Rennes, Serv Anesthesie Reanimat, 2 Rue Henri Guilloux, F-35033 Rennes 9, France
[4] Univ Rennes, NuMeCan, Unite Inserm CIC 1414, CS 46510, 2 Rue Thabor, F-35042 Rennes, France