1. Department of Palliative Care, Policy and Rehabilitation, Weston Education Centre, King's College London, London, United Kingdom.
2. School of Nursing and Midwifery, University of Southampton, Southampton, United Kingdom.
3. Department of Palliative Care, King's College Hospital NHS Foundation Trust, London, United Kingdom.
4. Department of Nephrology, King's College Hospital NHS Foundation Trust, London, United Kingdom.
5. Department of Palliative Care, Guy's and St Thomas NHS Foundation Trust, London, United Kingdom.
6. Department of Renal Medicine, East Kent Hospitals NHS Trust, Canterbury, United Kingdom.