1. Department of Medical Oncology, University Medical Center Groningen, University of Groningen, Groningen, the Netherlands
2. Department of Supportive Care, Princess Margaret Cancer Centre, University Health Network, Toronto, Ontario, Canada
3. Department of Neurology, University Medical Center Groningen, University of Groningen, Groningen, the Netherlands
4. Department of Medical Oncology and Hematology, Princess Margaret Cancer Centre, University Health Network, Toronto, Ontario, Canada
5. Radiation Medicine Program, Princess Margaret Cancer Centre, University Health Network, Toronto, Ontario, Canada
6. Center of Expertise in Palliative Care, University Medical Center Groningen, University of Groningen, the Netherlands