[1] CHU Bicetre, Assistance Publ Hop Paris, Serv Neurol, F-94275 Le Kremlin Bicetre, France
[2] CHU Pitie Salpetriere, Assistance Publ Hop Paris, Dept Neurol, F-75651 Paris 13, France
[3] Univ Paris 06, INSERM, UMRS 952, F-75252 Paris 05, France
[4] Univ Paris 06, CNRS, UMR 7224, F-75252 Paris 05, France
[5] Univ Paris 06, CHU Pitie Salpetriere, INSERM, UMRS 975, F-75651 Paris 13, France
[6] Univ Paris 06, CHU Pitie Salpetriere, CNRS CRICM 7225, F-75651 Paris 13, France
[7] INSERM, U788, F-94275 Le Kremlin Bicetre, France