1. Center for Neurological RestorationCleveland ClinicCleveland Ohio USA
2. University of Alabama at BirminghamBirmingham Alabama USA
3. Department of NeurologyUniversity of South FloridaTampa Florida USA
4. University of TorontoToronto Ontario Canada
5. Movement Disorders UnitWestmead Hospital and Sydney Medical School Sydney Australia
6. Charité‐University Medicine Berlin Berlin Germany
7. Keck/USC School of MedicineLos Angeles California USA
8. Klinikum‐Bremerhaven, Bremerhaven, Germany and Skane University Hospital Lund Sweden
9. Walton Center for Neurology and Neurosurgery Liverpool United Kingdom
10. Kazan State Medical UniversityKazan Russia
11. University of MontrealMontreal Quebec Canada
12. University of AlbertaEdmonton Alberta Canada
13. AbbVie Inc., North Chicago Illinois USA
14. University of Cincinnati Academic Health CenterCincinnati Ohio USA