1 St Vincents' Clinical School, Faculty of Medicine, University of New South Wales, Sydney, Australia; Cunningham Centre for Palliative Care, Sydney, NSW, Australia; Department of Respiratory Medicine, Campbelltown Hospital, Sydney, NSW, Australia. Electronic address: tracy.smith@sesiahs.health.nsw.gov.au.
2 University of Technology, Sydney, NSW, Australia; Faculty of Nursing, Johns Hopkins University, Baltimore, MD, USA.
3 Department of Thoracic Medicine, Concord Hospital, Sydney, NSW, Australia; Faculty of Medicine, University of Sydney, Sydney, NSW, Australia; The George Institute for Global Health, Sydney, Australia.
4 St Vincents' Clinical School, Faculty of Medicine, University of New South Wales, Sydney, Australia; Cunningham Centre for Palliative Care, Sydney, NSW, Australia.