1 Public Health England, London, United Kingdom. Electronic address: [email protected].
2 Public Health England, London, United Kingdom.
3 Imperial College and NHS Trust, London, United Kingdom.
4 London School of Hygiene and Tropical Medicine, London, United Kingdom.
5 Department of Brain Sciences, Imperial College London, London, United Kingdom; UK Dementia Research Institute, Care Research & Technology Centre, London, United Kingdom.
6 Hammersmith and Fulham Integrated Care Partnership, London, United Kingdom.
7 Hammersmith and Fulham Council, London, United Kingdom.