[1] CHU Vaudois, DCN, Lausanne, Switzerland
[2] Hosp Civils Lyon, Ctr Reference Malad Neuromusculaires, Lyon, France
[3] Cabinet Med, Epinal, France
[4] CHU Rouen, Dept Neurol, Rouen, France
[5] Univ Aix Marseille, CNRS, CRN2M, UMR 7286, Marseille, France
[6] Hop La Timone, Ctr Reference Malad Neuromusculaires, Marseille, France
[7] Hop La Timone, SLA, Marseille, France