1. Clinical, Health and Educational Psychology/Centre for Behaviour Change University College London London United Kingdom of Great Britain and Northern Ireland
2. Sheffield Diabetes and Endocrine Centre Sheffield Teaching Hospitals NHSF Trust Sheffield United Kingdom of Great Britain and Northern Ireland
3. Diabetes Centre King’s College Hospital London United Kingdom of Great Britain and Northern Ireland
4. School of Health and Related Research University of Sheffield Sheffield United Kingdom of Great Britain and Northern Ireland
5. School of Health Sciences University of Surrey London United Kingdom of Great Britain and Northern Ireland
6. Health Services Research Centre, City University of London London United Kingdom of Great Britain and Northern Ireland
7. Department of Oncology and Metabolism University of Sheffield Sheffield United Kingdom of Great Britain and Northern Ireland