1. IRCCS Fondazione Don Carlo Gnocchi, Milan, Italy
2. Department of Neurorehabilitation, IRCCS San Raffaele Pisana, Rome, Italy
3. Department of Electronics, Information and Bioengineering, Politecnico di Milano, Milan, Italy
4. Department of Geriatrics, Neuroscience and Orthopedics, Universitá Cattolica del Sacro Cuore, Rome, Italy
5. Unitá operativa di Neuroriabilitazione ad Alta Intensitá, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy
6. San Raffaele University, Rome, Italy