1. IRCCS Fondazione Don Carlo Gnocchi, Florence, Italy
2. Istituto di Biorobotica, Scuola Superiore Sant'Anna, Pontedera, Italy
3. Department of Experimental and Clinical Medicine, University of Florence, Florence, Italy
4. Department of Clinical Neuroscience, Institute of Neuroscience and Physiology, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
5. Department of Occupational Therapy and Physiotherapy, Sahlgrenska University Hospital, Gothenburg, Sweden