1. Operative Unit of NeurologyFidenza Hospital, AUSL Parma Parma Italy
2. Department of Biomedical SciencesUniversity of Sassari Sassari Italy
3. Center for Mind/Brain SciencesUniversity of Trento Trento Italy
4. Department of Medicine and SurgeryUniversity of Parma Parma Italy
5. Sobell Department of Motor Neuroscience and Movement DisordersUCL Institute of Neurology London UK