Miriam Wiersma1, Wendy Lipworth2, Paul Komesaroff3, Ian Kerridge2,4. 1. The University of Sydney, Sydney Health Ethics, Level 1, Medical Foundation Building, K25, Sydney, NSW, 2006, Australia. miriam.wiersma@sydney.edu.au. 2. The University of Sydney, Sydney Health Ethics, Level 1, Medical Foundation Building, K25, Sydney, NSW, 2006, Australia. 3. Centre for Ethics in Medicine and Society, Alfred Hospital, Monash University, Commercial Road, Prahran, Victoria, Australia. 4. Haematology Department, Royal North Shore Hospital, Reserve Rd, St Leonards, NSW, 2065, Australia.