1. Selkirk Neurology & Inland Northwest Research, Spokane, 610 S Sherman St #201 & 208, Spokane, WA 99202, USA
2. Department of Neurology, Edith Wolfson Medical Center Affiliated to Tel Aviv University, 62 Ha-Lokhamim St, Holon, Israel
3. Department of Neuroscience, Padua University, 5 - 35128 Padova, Padua, Veneto, Italy
4. Department of Neurology, University of Medicine & Pharmacy “Carol Davila”, Bulevardul Eroii Sanitari 8, Bucharest, Romania
5. AbbVie, Inc., 1 Waukegan Rd, North Chicago, IL 60064, USA
6. Department of Neurology AZ Groeninge, President Kennedylaan 4, Kortrijk, Belgium
7. Neurology Department, Hospital Universitario Burgos, Av. Islas Baleares, 3, Burgos, Spain
8. Department of Neurology, Vanderbilt University Medical Center, 1211 Medical Center Dr, Nashville, TN 37232, USA
9. Kingston Centre, Monash Health, 400 Warrigal Rd, Melbourne, Victoria, Australia
10. Department of Neurology, University of Pecs, 48-as tér 1, Pecs, Hungary
11. Department of Neurological Sciences, Sapienza University of Rome, Piazzale Aldo Moro, 5, Rome, Italy
12. Department of Neurology, Wake Forest School of Medicine, 475 Vine St, Winston Salem, NC 27101, USA
13. Department of Neurology, Victor Babes University of Medicine & Pharmacy, Piaţa Eftimie Murgu 2, Timisoara, Romania
14. Department of Neurology, University of Alabama at Birmingham, 1720 University Blvd, Birmingham, AL 35294, USA
15. Parkinson Foundation International Centre of Excellence, King’s College & King’s College Hospital, Denmark Hill, London, UK