1 Centre for Learning & Research in Palliative Care, HammondCare, Greenwich Hospital, Greenwich, NSW 2065, Australia; Sydney Medical School, The University of Sydney, Sydney, NSW 2006, Australia. Electronic address: jclayton@hammond.com.au.
2 Centre for Learning & Research in Palliative Care, HammondCare, Greenwich Hospital, Greenwich, NSW 2065, Australia.
3 School of Psychology, The University of Sydney, Sydney NSW 2006, Australia.