1. School of Nursing and Midwifery, Queen’s University Belfast, Belfast, UK
2. Centre for Public Health, School of Medicine, Dentistry and Biomedical Sciences, Queen’s University Belfast, Belfast, UK
3. Centre for Palliative Care, St Vincent’s Hospital Melbourne, Fitzroy, VIC, Australia
4. Faculty of Medicine, Dentistry and Health Sciences, University of Melbourne, Melbourne, VIC, Australia
5. Division of Health Research, Lancaster University, Lancaster, UK
6. School of Nursing, University of Ulster, Belfast, UK