1. Department of Palliative and Supportive Services, Flinders University, Daw Park, South Australia; Department of Palliative Care, Braeside Hospital, Prairiewood, and University of New South Wales, South West Sydney Clinical School, New South Wales
2. Department of Palliative and Supportive Services, Flinders University, Daw Park, South Australia
3. Department of Anaesthesia and Pain Management, Flinders Medical Centre, Bedford Park, South Australia
4. The University of Oklahoma College of Pharmacy, Tulsa, Oklahoma
5. Department of Palliative and Supportive Services, Flinders University, Daw Park, South Australia; Division of Medical Oncology, Department of Medicine, Duke University Medical Center, Durham, North Carolina