1. Sobell Department of Motor Neuroscience and Movement Disorders, Institute of Neurology; University College London; London UK
2. Department of Biomedical and Neuromotor Sciences, Alma Mater Studiorum; University of Bologna; Bologna Italy
3. IRCSS, Istituto di Ricovero e Cura a Carattere Scientifico; Research Hospital, Institute of Neurological Sciences; Bologna Italy
4. Department of Neuroscience, Biomedicine and Movement Science; University of Verona; Verona Italy
5. Department of Neurology and Psychiatry; “Sapienza” University of Rome; Italy
6. IRCCS Neuromed, Pozzilli (IS); Italy