1. Preventive Neurology Unit, Wolfson Institute of Population Health, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, United Kingdom
2. Department of Neurology, Royal London Hospital, London, United Kingdom
3. Food Standards Agency, London, United Kingdom
4. Centre for Primary Care, Wolfson Institute of Population Health, The London School of Medicine and Dentistry, Queen Mary University of London, London, United Kingdom
5. Reta Lila Weston Institute, Institute of Neurology, UCL and National Hospital, Queen Square, London, United Kingdom
6. Blizard Institute, Queen Mary University of London, London, United Kingdom
7. Centre for Cancer Prevention, Queen Mary University of London, London, United Kingdom
8. Department of Clinical and Movement Neuroscience, University College London Queen Square Institute of Neurology, London, United Kingdom