1. Peter MacCallum Cancer center, 305 Grattan St, Melbourne, Victoria, 3000, Australia
2. The Royal Melbourne Hospital, 300 Grattan St, Parkville, Victoria, 3050, Australia
3. Department of Medicine, University of Melbourne Eastern Hill Campus, Victoria Parade, Fitzroy, Victoria, 3065, Australia
4. Department Intensive Care Medicine, St. Olavs University Hospital, Trondheim, Norway
5. Professor of Clinical & Experimental Pharmacology, Discipline of Pharmacology, Faculty of Health & Medical Sciences, University of Adelaide, Adelaide, 5005, Australia
6. Department of Medicine, St Vincent's Hospital Melbourne, University of Melbourne, Victoria, Australia
7. St Vincent's Hospital, Palliative Care Service Victoria Parade, Fitzroy, Victoria, 3065, Australia
8. Principal Research Fellow Florey Institute of Neuroscience & Mental Health, 30 Royal Parade, Victoria, 3052, Australia