1. Department of Neurosurgery, Sir Charles Gairdner Hospital, Nedlands, and Royal Perth Hospital, Perth;
2. Dunedin Hospital and Otago Bioethics Centre, University of Otago, Dunedin, New Zealand
3. Department of Intensive Care Medicine and School of Population Health, University of Western Australia, Perth;
4. Department of Occupational Therapy, Sir Charles Gairdner Hospital, Perth, Western Australia; and