1. West London Mental Health NHS Trust, London, UK
2. King’s College London, Institute of Psychiatry, Psychology and Neuroscience, London, UK
3. Collaboration for Leadership in Applied Health Research and Care (CLAHRC) Programme for North West London, London, UK
4. Division of Psychiatry, University College London, London, UK
5. Imperial College London, London, UK
6. Centre for Dementia Prevention, University of Edinburgh, Edinburgh, UK
7. University of Oxford, Department of Psychiatry, Oxford, UK