1. Department of Palliative Medicine, The University of Bristol and Bristol Haematology and Oncology Centre, University Hospitals Bristol NHS Foundation Trust, Bristol, UK,
2. Department of Palliative Medicine, The University of Bristol and Bristol Haematology and Oncology Centre, University Hospitals of Bristol NHS Foundation Trust, Bristol, UK
3. Macmillan Cancer Support and Mount Vernon Cancer Centre, London, UK
4. Sir Michael Sobell House, Harris Manchester College and Oxford University Medical School, Oxford, UK