1. Department of Clinical and Movement Neurosciences, Queen Square Institute of Neurology University College London London United Kingdom
2. Department of Neurology IRCCS Humanitas Research Hospital Milan Italy
3. Department of Neuroscience Catholic University Milan Italy
4. Department of Medicine, Surgery and Dentistry "Scuola Medica Salernitana" University of Salerno Baronissi Italy
5. Neurology Unit, Movement Disorders Division, Department of Neurosciences, Biomedicine and Movement Sciences University of Verona Verona Italy
6. Department of Human Neurosciences, Sapienza University of Rome Rome Italy
7. IRCCS Neuromed Pozzilli Italy