1. King's College Hospital; London UK
2. King's College London; London UK
3. University Hospital Lewisham; London UK
4. Paracelsus-Elena Hospital; Kassel Germany
5. Clinical Investigation Center 1436 and Departments of Clinical Pharmacology and Neurosciences, INSERM and University Hospital of Toulouse; Toulouse France
6. Forth Valley Royal Hospital; Scotland UK
7. Lewisham & Greenwich NHS Trust; London UK
8. Plymouth University and Plymouth Hospitals NHS Trust; Plymouth UK
9. St Georges Hospital; London UK
10. Transilvania University; Brasov Romania
11. Princess Royal University Hospital site; King's College Hospital; Orpington UK
12. Greater Manchester Neuroscience Centre; Manchester UK
13. University of Lund; Lund Sweden
14. Klinikum Bremerhaven Reinkenheide; Bremerhaven Germany
15. Parkinson and Movement Disorders Unit; IRCCS Hospital San Camillo; Venice Italy
16. National Center of Epidemiology and CIBERNED; Carlos III Institute of Health; Madrid Spain