1. Department of Public Health, Erasmus MC University Medical Center Rotterdam Rotterdam The Netherlands
2. Center of Expertise Palliative Care Leiden University Medical Center Leiden The Netherlands
3. Department of Medical Oncology Erasmus MC Cancer Institute Rotterdam The Netherlands
4. Department of Internal Medicine Onze Lieve Vrouwe Gasthuis Amsterdam The Netherlands
5. Department of Medical Oncology Leiden University Medical Center Leiden The Netherlands
6. Department of Internal Medicine Maasstad Hospital Rotterdam The Netherlands