1. University of Glasgow Academic Geriatric Medicine, School of Cardiovascular & Metabolic Health, , Glasgow, Scotland
2. University of Glasgow Health Economics and Health Technology Assessment, School of Health & Wellbeing, , Glasgow, Scotland
3. Health and Social Care Analysis, Scottish Government Social Care Analytical Unit, , Edinburgh, Scotland
4. University of Edinburgh Ageing and Health Research Group and Advanced Care Research Centre, Usher Institute, , Edinburgh, Scotland