1. Department of Palliative and Supportive Services Flinders University, 700 Goodwood Road Daw Park 5041, South Australia, Australia
2. Department of Palliative and Supportive Services Flinders University, Bedford Park, South Australia, Department of Palliative Care, Braeside Hospital Prairiewood, New South Wales
3. Department of Palliative and Supportive Services Flinders University, Bedford Park, South Australia
4. Department of Palliative and Supportive Services Flinders University, Bedford Park, South Australia, Division of Medical Oncology Department of Medicine, Duke University Medical Centre Durham, North Carolina