1. University of Alabama at Birmingham Birmingham Alabama USA
2. Selkirk Neurology Spokane Washington USA
3. Edith Wolfson Medical Center Holon Israel
4. Department of Neurology AZ Groeninge Kortrijk Belgium
5. Neurology Department Hospital Universitario Burgos Burgos Spain
6. Vanderbilt University Medical Center Nashville Tennessee USA
7. Kingston Centre, Monash Health Melbourne Victoria Australia
8. University of Pécs Pécs Hungary
9. Sapienza University of Rome Rome Italy
10. Wake Forest School of Medicine Winston Salem North Carolina USA
11. Victor Babes University of Medicine and Pharmacy Timisoara Romania
12. AbbVie Inc North Chicago Illinois USA
13. Parkinson's Foundation Centre of Excellence, King's College Hospital, and King's College Institute of Psychiatry, Psychology & Neuroscience London United Kingdom