Competing interests
Dementia
HEART
PE is director of the UK Medical Research Council (MRC) Centre for Environment and Health (MR/L01341X/1; MR/S019669/1) and acknowledges support from the National Institute for Health Research (NIHR) Imperial Biomedical Research Centre, the Imperial College British Heart Foundation Centre for Research Excellence (RE/18/4/34215), and the UK Dementia Research Institute at Imperial College London (MC_PC_17114).