1. Foundation IRCCS Ca'Granda Ospedale Maggiore Policlinico, Neurology Unit Milan Italy
2. Dino Ferrari Center, Neuroscience Section, Department of Pathophysiology and Transplantation University of Milan Milan Italy
3. Department of Clinical Sciences and Community Health Università degli Studi di Milano Milan Italy
4. Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico Milan Italy
5. Gaetano Pini‐CTO, Parkinson Institute Milan Italy
6. Neuroscience Section, Department of Medicine, Surgery and Dentistry "Scuola Medica Salernitana," University of Salerno Baronissi (SA) Italy
7. Department of Neurology "F. Miulli" General Hospital Acquaviva delle Fonti Italy
8. Department of Neurology IRCCS San Raffaele Scientific Institute Milan Italy
9. Neurology Unit and Neurobiorepository and Laboratory of Advanced Biological Markers, Department of Clinical and Experimental Sciences, University of Brescia, and Department of Continuity of Care and Frailty ASST Spedali Civili Brescia Hospital Brescia Italy
10. Department of Translational Medicine, Section of Neurology University of Piemonte Orientale Novara Italy
11. Neurology Unit, Neuromotor and Rehabilitation Department Azienda USL‐IRCCS di Reggio Emilia Reggio Emilia Italy
12. Department of Experimental Medicine, Section of Human Physiology University of Genoa Genoa Italy
13. IRCCS Ospedale Policlinico San Martino—UOC Genetica Medica Genoa Italy
14. Department of Neuroscience and Rehabilitation Azienda Ospedaliera‐Universitaria S. Anna Ferrara Italy
15. Fondazione IRCCS Istituto Neurologico Carlo Besta, Department of Clinical Neurosciences Movement Disorders Unit Milan Italy
16. Neurological Department A. Perrino's Hospital Brindisi Italy
17. Department of Advanced Medical and Surgical Sciences University of Campania “Luigi Vanvitelli” Caserta Italy
18. Unit of Neurology, Department of Clinical and Experimental MedicineCenter for Neurodegenerative Diseases—Parkinson's Disease and Movement Disorders University of Pisa Pisa Italy
19. Neurology Unit, Trento Hospital Azienda Provinciale per i Servizi Sanitari (APSS) di Trento Trento Italy
20. Department of Neuroscience "Rita Levi Montalcini" University of Turin Turin Italy
21. Neurology 2 Unit, A.O.U. Città della Salute e della Scienza di Torino Turin Italy
22. Neurology and Stroke Unit Pescara Hospital Pescara Italy
23. Neurorehabilitation Unit IRCCS Centro Neurolesi "Bonino Pulejo," Messina Messina Italy
24. Department of Neurosciences, Biomedicine and Movement Sciences University of Verona Verona Italy
25. Department of Neurology and Laboratory of Neuroscience Istituto Auxologico Italiano IRCCS Milan Italy
26. Neurology Unit, Rovereto Hospital Azienda Provinciale per i Servizi Sanitari (APSS) di Trento Trento Italy
27. Department of Molecular Medicine University of Pavia Pavia Italy
28. Neurogenetics Research Center IRCCS Mondino Foundation Pavia Italy
29. Department of Neurology IRCCS Humanitas Research Hospital Rozzano Italy
30. Department of Parkinson's Disease Movement Disorders and Brain Injury Rehabilitation, Moriggia Pelascini Hospital Gravedona Italy
31. Parkinson and Movement Disorders Unit, Center for Neurodegenerative Diseases (CENSE), Department of Neuroscience University of Padua Padua Italy
32. Neurology Department ASST Fatebenefratelli Sacco Milan Italy
33. Department of Neurology Santa Maria Hospital Terni Italy
34. Department of Neurorehabilitation Parkinson's Disease Excellence Center, Casa di Cura Villa Margherita via Costacolonna n 1 Arcugnano Vicenza Italy
35. Movement Disorders Center, Neurology Department Perugia General Hospital and University of Perugia Perugia Italy
36. Department of Neuroscience Brotzu Hospital Cagliari Italy
37. Department GF Ingrassia University of Catania Catania Italy