1. Research Institute, Primary Care and Health Sciences, Keele University, Keele, UK
2. Age UK North Staffordshire, Stafford, UK
3. Division of Nursing, Midwifery and Social Work, University of Manchester, Manchester, UK
4. Nottingham Clinical Trials Unit, University of Nottingham, Nottingham, UK
5. School of Health and Social Care, University of Lincoln, Lincoln, UK
6. NIHR School for Primary Care Research, Centre for Primary Care, Division of Population of Health, Health Services Research and Primary Care, Manchester Academic Health Science Centre, University of Manchester, Manchester, UK
7. Mental Health and Addictions Research Group, University of York, York, UK
8. Centre for Health and Population Sciences, Hull York Medical School, York, UK
9. Midlands Partnership NHS Foundation Trust, Stafford, UK
10. Collaboration for Leadership in Applied Health Research and Care West Midlands, Warwick, UK