1. Instituto de Medicina Molecular, Faculty of Medicine, University of Lisbon Portugal
2. CNS‐Campus Neurológico Sénior Torres Vedras Portugal
3. Parkinson's Disease and Movement Disorders Center, Division of Neurology, Department of MedicineThe Ottawa Hospital Research Institute, Brain and Mind Research Institute, University of Ottawa Ottawa Ontario Canada
4. Parkinson's Disease and Movement Disorder CenterUniversity of Kansas Medical Center Kansas City Kansas USA
5. Department of Neurology, University Hospital 12 de Octubre; Center of Biomedical Network Research on Neurodegenerative diseases (CIBERNED), Department of Medicine, Faculty of MedicineComplutense University Madrid Spain
6. National Neuroscience Institute, Duke NUS Medical School Singapore
7. Department of Neuroscience, Rehabilitation, Ophthalmology, Genetics and Maternal Child HealthUniversity of Genoa–IRCCS Ospedale Policlinico San Martino Genova Italy
8. Motor Control Section, National Institute of Neurological Disorders and StrokeNational Institutes of Health Bethesda Maryland USA
9. Clinical Trials Unit, Office of the Clinical DirectorNational Institutes of Neurological Disorders and Stroke, National Institutes of Health Bethesda Maryland USA
10. Department of NeurologySouthern Illinois University School of Medicine Springfield Illinois USA
11. Department of NeurologyUniversitätsklinikum Schleswig‐Holstein Kiel Campus, Christian Albrechts University Kiel, Kiel Germany