1. Department of Neurology University Hospital Limoges France
2. Department of Neurology University Hospital Bordeaux France
3. INSERM U1051 Institut des Neurosciences de Montpellier (INM) Université de Montpellier Montpellier France
4. Neuroscience Consortium University of Pavia, Monza Policlinico and Pavia Mondino Pavia Italy
5. ALS Reference Center University Hospital Tours France
6. Department of Neurosciences Imaging and Clinical Sciences University G. d’Annunzio Chieti‐Pescara Italy