1. King's College London and King's College Hospital; London UK
2. Institute of Neurology; Faculty of Brain Sciences; Sobell Department of Motor Neuroscience and Movement Disorders; University College of London; London UK
3. National Institute of Psychiatry and Addictions; Nyírő Gyula Hospital; Budapest Hungary
4. Institute of Genomic Medicine and Rare Disorders; Semmelweis University; Budapest Hungary
5. Department of Neurology; Emergency Clinical County Hospital Brasov; Brasov Romania
6. Department of Neurology; Holstebro Hospital; Holstebro Denmark
7. Department of Neurology; Evangelismos Hospital; Athens Greece
8. Sheffield Teaching Hospitals NHS Trust; Sheffield UK
9. University of Sheffield; Sheffield UK
10. Department of Neurology; Technical University Dresden; Dresden Germany
11. UCL Institute of Neurology; Queen Square; Neurology; London UK
12. Clinic of Neurology 2; Medical Campus III; Kepler University Clinic; Linz Austria
13. Department of Neurology; Klinikum rechts der Isar; Technische Universität München; Munich Germany
14. Department of Neurology; Christian Doppler Medical Center; Paracelsus Medical University; Salzburg Austria