1. Department of Neurosciences Institute of Psychiatry, Psychology & Neuroscience King’s College London London UK
2. Parkinson's Foundation Centre of Excellence King's College Hospital London UK
3. Radboud University Medical Centre Department of Neurology Donders Institute for Brain, Cognition and Behaviour Nijmegen The Netherlands
4. Center for Networked Biomedical Research in Neurodegenerative Diseases (CIBERNED) Carlos III Institute of Health Madrid Spain
5. Perelman School of Medicine University of Pennsylvania Philadelphia PA USA
6. Parkinson's Disease Research Education and Clinical Center (PADRECC) Philadelphia Veterans Affairs Medical Center Philadelphia PA USA
7. Department of Clinical and Movement Neurosciences UCL Institute of Neurology University College London London UK
8. Parkinson and Movement Disorders Unit Department of Neuroscience University of Padua Padua Italy
9. Department of Neurology Faculty of Medicine Transilvania University County Emergency Clinic Hospital Brașov Romania
10. Faculty of Medicine University of Lund Lund Sweden
11. University Hospital Reinkenheide Bremerhaven Germany