1. Institute of Applied Health Research, University of Birmingham, Birmingham, UK
2. Renal Research Group, School of Medicine, Keele University, Keele, UK
3. Health Services Management Centre, University of Birmingham, Birmingham, UK
4. NIHR Devices for Dignity, Sheffield Teaching Hospitals NHS Foundation Trust, Sheffield, UK
5. Sheffield Centre for Health and Related Research, University of Sheffield, Sheffield, UK
6. Kent and Medway Medical School, University of Kent, Canterbury, UK