1. Palliative and Supportive Services, Flinders University, Bedford Park, SA, Australia
2. Deakin Health Economics, Deakin University, Burwood, VIC, Australia
3. Hematology, Oncology and Palliative Care, Virginia Commonwealth University, Richmond, VA, USA
4. School of Social and Community Medicine, University of Bristol, Bristol, UK
5. The National Institute for Health Research Collaboration for Leadership in Applied Health Research and Care West (NIHR CLAHRC West), University Hospitals Bristol NHS Foundation Trust, Bristol, UK