1. Netherlands Institute of Health Services Research (NIVEL) Utrecht The Netherlands
2. Maasveld Koraal Maastricht The Netherlands
3. Expertise Centre for Palliative Care Maastricht University Medical Centre Maastricht The Netherlands
4. Department of Family Medicine, Faculty of Health, Medicine and Life Science Maastricht University Maastricht The Netherlands
5. Amsterdam Public Health Research Institute (APH) VU Medical Centre Amsterdam The Netherlands
6. Expertise Centre for Palliative Care Amsterdam VU Medical Centre Amsterdam The Netherlands