1. Department of Medical Oncology University Medical Center Utrecht Utrecht The Netherlands
2. Department of Medical Oncology and Immunology Netherlands Cancer Institute Amsterdam The Netherlands
3. Department of Medical Oncology Radboud University Medical Center Nijmegen The Netherlands
4. Department of Medical Oncology University Medical Center Groningen Groningen The Netherlands
5. Department of Medical Oncology Zuyderland Medical Center Sittard Sittard‐Geleen The Netherlands
6. Isala Oncology Center Zwolle The Netherlands
7. Department of Internal Medicine Medisch Spectrum Twente Enschede The Netherlands
8. Department of Medical Oncology, GROW School for Oncology and Developmental Biology Maastricht University Medical Center Maastricht The Netherlands
9. Department of Internal Medicine Medical Center Leeuwarden Leeuwarden The Netherlands
10. Department of Internal Medicine Maxima Medical Center Eindhoven The Netherlands
11. Department of Internal Medicine Amphia Hospital Breda The Netherlands
12. Department of Medical Oncology Leiden University Medical Center Leiden The Netherlands
13. Departments of Medical Oncology and Radiology & Nuclear Medicine Erasmus Medical Center Rotterdam The Netherlands
14. Department of Medical Oncology Amsterdam UMC Cancer Center Amsterdam VU University Medical Center Amsterdam The Netherlands