1. Department of Palliative Care, Peter MacCallum Cancer Centre, Melbourne, Victoria, Australia.
2. Department of Palliative Care, The Royal Melbourne Hospital, Parkville, Victoria, Australia.
3. Department of Medicine, University of Melbourne, Fitzroy, Victoria, Australia.
4. Department Intensive Care Medicine, St. Olavs University Hospital, Trondheim, Norway.
5. Florey Department of Neuroscience and Mental Health, Florey Institute of Neuroscience and Mental Health, Victoria, Australia.
6. Department of Clinical & Experimental Pharmacology, Discipline of Pharmacology, Faculty of Health and Medical Sciences, University of Adelaide, Adelaide, Australia.
7. Department of Medicine, St Vincent's Hospital Melbourne, University of Melbourne, Victoria, Australia.
8. Department of Palliative Care, Palliative Care Service, St Vincent's Hospital, Fitzroy, Victoria, Australia.