1. Department of Clinical and Experimental Medicine, Neurological Clinic, University of Pisa, Pisa, Italy
2. Department of Surgical Pathology, Medical, Molecular, and Critical Area, University of Pisa, Pisa, Italy
3. Molecular Genetics, Azienda Ospedaliera Universitaria Pisana, Pisa, Italy
4. CNR Institute of Molecular Genetics “Luigi-Luca Cavalli-Sforza” Unit of Bologna, Bologna, Italy
5. IRCCS Istituto Ortopedico Rizzoli, Bologna, Italy
6. Department of Biomedical and Neuromotor Science, ALMA MATER, University of Bologna, Italy
7. U.O.C. Fondazione G. Monasterio CNR-Regione Toscana, Pisa, Italy