1. 23andMe, Inc., Sunnyvale, CA, USA
2. Preventive Neurology Unit, Wolfson Institute of Preventive Medicine, Queen Mary University of London, London, UK
3. Department of Cellular Pathology, Northwest London Pathology, Charing Cross Hospital, London, UK
4. Laboratory of Neurogenetics, National Institute on Aging, National Institutes of Health, Bethesda, MD, USA
5. Data Tecnica International, Glen Echo, MD, USA
6. MRC Integrative Epidemiology Unit, Bristol Medical School, University of Bristol, Bristol, UK, UK
7. Department of Clinical and Movement Neurosciences, UCL Institute of Neurology, London, UK