1. S Booth (corresponding author) University of Cambridge, Cambridge, UK, Department of Palliative Care and Policy, King's College, London, UK, and Addenbrookes Palliative Care Team, Elsworth House, Box 63, Hills Road, Cambridge, UK CB2
2. Addenbrookes Palliative Care Team, Cambridge, UK
3. General Practice and Primary Care Research Unit, Department of Public Health and Primary Care, University of Cambridge, Cambridge, UK
4. Department of Palliative Care, Policy, and Rehabilitation, Cicely Saunders Institute, London, UK