1. Center of Expertise in Palliative Care Leiden University Medical Center Leiden The Netherlands
2. Department of Public Health and Primary Care Leiden University Medical Center Leiden The Netherlands
3. Foundation ‘Hospice Duin‐ en Bollenstreek’ Sassenheim The Netherlands
4. Department of Clinical Epidemiology Leiden University Medical Center Leiden The Netherlands
5. Netherlands Comprehensive Cancer Organisation (IKNL) Utrecht The Netherlands