1. UK Dementia Research Institute Centre for Care Research and Technology, Imperial College London , 9SMUB, White City Campus, W12 0BZ London , UK
2. Department of Brain Sciences, Imperial College London , W12 0BZ London , UK
3. Department of Psychiatry and Neurochemistry, Institute of Neuroscience and Physiology, the Sahlgrenska Academy at the University of Gothenburg , 43141 Mölndal , Sweden
4. Clinical Neurochemistry Laboratory, Sahlgrenska University Hospital , Mölndal 43180 , Sweden
5. Department of Neurodegenerative Disease, UCL Institute of Neurology , Queen Square, WC1N 3BG London , UK
6. UK Dementia Research Institute at UCL , WC1N 3BG London , UK
7. Hong Kong Center for Neurodegenerative Diseases , Clear Water Bay, Hong Kong , China
8. Wisconsin Alzheimer’s Disease Research Center, University of Wisconsin School of Medicine and Public Health, University of Wisconsin-Madison , Madison, 53792 WI , USA
9. Surrey and Borders Partnership NHS Foundation Trust , Leatherhead, KT22 7AD Surrey , UK
10. University of Surrey , GU2 7XH Guildford , UK
11. Centre for Injury Studies, Imperial College London , W12 0BZ London , UK
12. Institute of Psychiatry, Psychology and Neuroscience Maurice Wohl Institute Clinical Neuroscience Institute, King's College London , SE5 9RT London , UK
13. NIHR Biomedical Research Centre for Mental Health and Biomedical Research Unit for Dementia at South London and Maudsley NHS Foundation , SE5 8AF London , UK
14. Centre for Age-Related Medicine, Stavanger University Hospital , 4011 Stavanger , Norway