1. Dementia Research Centre, UCL Queen Square Institute of Neurology, University College London, London, United Kingdom
2. London School of Hygiene and Tropical Medicine, Department of Medical Statistics, University of London, London, United Kingdom
3. School of Biomedical Engineering and Imaging Sciences, King’s College London, London, United Kingdom
4. MRC Unit for Lifelong Health and Ageing at UCL, University College London, London, United Kingdom
5. Leonard Wolfson Experimental Neurology Centre, UCL Queen Square Institute of Neurology, University College London, London, United Kingdom
6. Neuroradiological Academic Unit, Department of Brain Repair and Rehabilitation, UCL Queen Square Institute of Neurology, University College London, London, United Kingdom
7. UK Dementia Research Institute at UCL, University College London, London, United Kingdom