1. Faculty of Health Sciences, University of Hull, Hull, United Kingdom of Great Britain and Northern Ireland
2. Department of Clinical Psychology for Older People, Humber Teaching NHS Foundation Trust, Willerby Hill, Hull, United Kingdom of Great Britain and Northern Ireland
3. Department of Clinical Psychology for Older People, Leeds and York Partnership NHS Foundation Trust, Century Way, Leeds, United Kingdom of Great Britain and Northern Ireland
4. Department of Clinical Psychology for Older People, Leeds Institute of Health Science, University of Leeds, Leeds, United Kingdom of Great Britain and Northern Ireland
5. Department of Clinical Psychology for Older People, Bradford District Care NHS Foundation Trust, Osprey House, Lynfield Mount Hospital, Hull, United Kingdom of Great Britain and Northern Ireland
6. Department of Clinical Psychology for Older People, Cambridgeshire and Peterborough NHS Foundation Trust, Windsor Unit, Fulbourn Hospital, Cambridge, UK
7. Department of Psychiatry, University of Cambridge, Cambridge, UK