1. Division of Psychiatry, University College London, London, UK
2. Centre for Applied Dementia Studies, University of Bradford, Bradford, UK
3. NIHR Policy Research Unit on Health and Social Care Workforce, King’s College London, London, UK
4. Department of Psychiatry and Behavioral Sciences, Johns Hopkins Bayview, Johns Hopkins University, Baltimore, MD, USA
5. National Ageing Research Institute, Parkville, VIC, Australia; University of Melbourne, Parkville, VIC, Australia; Deakin University, Waurn Ponds, VIC, Australia