1. Center of Expertise of Palliative Care, Leiden University Medical Center, Leiden, The Netherlands
2. Public Health and Primary Care, Leiden University Medical Center, Leiden, The Netherlands
3. Biomedical Data Sciences, Section Medical Decision Making, Leiden University Medical Center, Leiden, The Netherlands
4. Netherlands Comprehensive Cancer Organization (IKNL), Utrecht, The Netherlands
5. Primary and Community Care, Radboud university medical center, Nijmegen, The Netherlands