1. Department of Biostatistics and Health Informatics, Institute of Psychiatry, Psychology and Neuroscience, King’s College London, London, UK
2. MRC Biostatistics Unit, Cambridge Institute of Public Health, University of Cambridge, Cambridge, UK
3. NIHR Biomedical Research Centre for Mental Health and Biomedical Research Unit for Dementia at South London and Maudsley NHS Foundation, London, UK
4. Farr Institute of Health Informatics Research, UCL Institute of Health Informatics, University College London, London, UK