1 Division of Respiratory Medicine & Allergology, Department of Clinical Sciences, Lund University, Lund, Sweden Discipline, Palliative and Supportive Services, Flinders University, Adelaide, South Australia, Australia.
2 Uppsala Clinical Research Center, Uppsala University Hospital, Uppsala, Sweden.
3 Division of Medical Oncology, Department of Medicine, Duke University Medical Center, Durham, North Carolina, USA.
4 Discipline, Palliative and Supportive Services, Flinders University, Adelaide, South Australia, Australia.