1. National Center of Epidemiology Carlos III Institute of Health Madrid Spain
2. Center for Networked Biomedical Research on Neurodegenerative Diseases (CIBERNED) Carlos III Institute of Health Madrid Spain
3. University and Institute for Research and Medical Care IRCCS San Raffaele Roma Italy
4. Department of Neurology Medical School University of Pecs Pecs Hungary
5. MTA‐PTE Clinical MRI Research Group Pecs Hungary
6. National Parkinson Foundation International Centre of Excellence King's College Hospital London UK
7. Institute of Psychiatry, Psychology and Neuroscience King's College London London UK