1. Palliative Care Team, King's College Hospital NHS Foundation Trust, Denmark Hill, London, UK,
2. Department of Palliative Care, Policy and Rehabilitation, King's College London, UK
3. School of Health Sciences and Social Care, Brunel University, Uxbridge, UK
4. Palliative Care Team, King's College Hospital NHS Foundation Trust, Denmark Hill, London, UK
5. Department of Neurology, King's College Hospital NHS Foundation Trust, Denmark Hill, London, UK