1. Neurology Unit, Movement Disorders Division, Department of Neurosciences Biomedicine and Movement Sciences University of Verona Verona Italy
2. Neurosciences Research Centre, Molecular and Clinical Sciences Neurosciences Research Centre Molecular and Clinical Sciences Research Institute, St George's University of London London United Kingdom
3. Department of Experimental and Clinical Medicine University of Messina Messina Italy
4. Center for Neurodegenerative Diseases, Department of Medicine, Surgery and Dentistry–Scuola Medica Salernitana University of Salerno Baronissi Italy
5. Neurology Unit, Department of Clinical and Experimental Medicine University of Pisa Pisa Italy
6. Department of Clinical and Experimental Sciences University of Brescia Brescia Italy
7. FERB Onlus, Ospedale S. Isidoro, Trescore Balneario Bergamo Italy
8. Parkinson and Movement Disorders Unit Fondazione IRCCS Istituto Neurologico Carlo Besta Milan Italy
9. Department G.F. Ingrassia, Section of Neurosciences University of Catania Catania Italy
10. Department of Medical Area Neurology Unit, ASST Pavia Pavia Italy
11. Botulinum Toxin Center Neurology Unit A.O.U. Mater Domini Catanzaro Italy
12. Aldo Ravelli Research Center for Neurotechnology and Experimental Brain Therapeutics, Department of Health Sciences University of Milan Milan Italy
13. IRCCS Neuromed Pozzilli Italy
14. Department of Neuroscience, Imaging and Clinical Sciences University G. d'Annunzio Chieti‐Pescara Italy
15. Department of Neurology IRCCS Humanitas Research Hospital Rozzano Italy
16. Department of Human Neurosciences Università La Sapienza Rome Italy
17. Department of Advanced Medical and Surgery Sciences University of Campania ‐ Luigi Vanvitelli Naples Italy
18. Department of Neuroscience–Rita Levi Montalcini University of Turin Turin Italy
19. Department of Biomedical and Neuromotor Sciences University of Bologna Bologna Italy
20. IRCCS, Institute of Neurological Sciences of Bologna Bologna Italy
21. Movement Disorder Unit Fondazione Policlinico Universitario A. Gemelli IRCCS Rome Italy
22. Clinical Neurophysiology Unit Cardarelli Hospital Naples Italy
23. Department of Neurosciences Reproductive and Odontostomatological Sciences, University of Naples–Federico II Naples Italy
24. Department of Systems Medicine University of Rome Tor Vergata Rome Italy
25. Clinical Neurology Unit, Department of Medical Surgical and Health Services, University of Trieste Trieste Italy
26. University and Institute of Research and Medical Care San Raffaele Roma Rome Italy
27. Mauriziano Hospital Umberto I Turin Italy
28. Movement Disorders Unit, Department of Neuroscience University of Padua Padua Italy
29. Department of Medical Sciences and Public Health University of Cagliari Cagliari Italy