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