1. Department of Biomedical and Neuromotor Sciences (DIBINEM), Alma Mater Studiorum, University of Bologna, Bologna, Italy;
2. Azienda Provinciale Servizi Sanitari Trento (APSS Trento), Neuro-Rehabilitation Hospital of Trento, Trento, Italy;
3. Department of Rehabilitation Science, College of Health and Human Services, George Mason University, Fairfax, VI, USA;
4. Alma Mater Studiorum, University of Bologna, Bologna, Italy