1. “Rita Levi Montalcini” Department of Neuroscience, ALS Centre, University of Turin, Turin, Italy
2. Azienda Ospedaliero-Universitaria Città della Salute e della Scienza di Torino, Neurology Unit 1, Turin, Italy
3. Department of Clinical Pathology, Laboratory of Genetics, Azienda Ospedaliero-Universitaria Città della Salute e della Scienza di Torino, Turin, Italy
4. Neuroscience Institute of Turin (NIT), Turin, Italy, and
5. Institute of Cognitive Sciences and Technologies, C.N.R., Rome, Italy