1. Department of Oncology, Vaasa Central Hospital, The Wellbeing Services County of Ostrobothnia, Vaasa, Finland.
2. Department of Oncology, Comprehensive Cancer Centre, University of Helsinki, Helsinki, Finland.
3. Department of Radiotherapy, Comprehensive Cancer Center, Helsinki University Hospital, Helsinki, Finland.
4. Department of Biostatistics, University of Turku and Turku University Hospital Turku, Turku Finland.
5. Department of Oncology, Turku University, Vaasa, Finland.
6. Palliative Center, Tyks Hospital Services, Turku University Hospital, Turku, Finland.
7. Department of General Medicine, University of Turku, Turku, Finland.
8. Department of Palliative Care, Comprehensive Cancer Center, Helsinki University Hospital, and Faculty of Medicine, Helsinki University, Helsinki, Finland.