1. University of Cologne, Faculty of Medicine and University Hospital Cologne, Department of Neurology, Cologne, Germany
2. Department of Neurology, Charité – University Medicine Berlin, Berlin, Germany
3. Department of Neurology and Neurosurgery, Salford Royal Foundation Thrust, Greater Manchester, UK
4. National Parkinson Foundation Centre of Excellence, King’s College Hospital, London, UK
5. Department of Neurology, University Hospital Giessen and Marburg, Campus Marburg, Marburg, Germany
6. Cognitive Neuroscience, Institute of Neuroscience and Medicine (INM-3), Research Center Jülich, Jülich, Germany
7. Division of Functional Neurosurgery of Institute of Psychiatry, Department of Neurology, University of São Paulo Medical School, São Paulo, Brazil
8. National Center of Epidemiology and CIBERNED, Carlos III Institute of Health, Madrid, Spain
9. Department of Neuroscience, University of Padua, Padua, Italy
10. University of Cologne, Faculty of Medicine and University Hospital Cologne, Department of Stereotaxy and Functional Neurosurgery, Cologne, Germany
11. The Maurice Wohl Clinical Neuroscience Institute, King’s College London, London, UK