1. Department of Medical Oncology, Netherlands Cancer Institute, Antoni van Leeuwenhoek, Amsterdam, the Netherlands
2. Department of Medical Oncology, University Medical Center Groningen, Groningen, the Netherlands
3. Department of Medical Oncology, Erasmus MC University Medical Center, Rotterdam, the Netherlands
4. Department of Medical Oncology, Radboud University Medical Center, Nijmegen, the Netherlands
5. Department of Medical Oncology, Amsterdam UMC, location VUmc, Cancer Center Amsterdam, Amsterdam, the Netherlands
6. Department of Medical Oncology, Leiden University Medical Center, Leiden, the Netherlands
7. Department of Internal Medicine/Medical Oncology, Medisch Spectrum Twente, Enschede, the Netherlands
8. Department of Medical Oncology, Maastricht University Medical Center, Maastricht, the Netherlands
9. Department of Medical Oncology, University Medical Center Utrecht, Utrecht, the Netherlands
10. Department of Medical Oncology, Amsterdam UMC, location AMC, Amsterdam, the Netherlands
11. Department of Psychosocial Research and Epidemiology, Netherlands Cancer Institute, Antoni van Leeuwenhoek, Amsterdam, the Netherlands
12. Department of Biostatistics, the Netherlands Cancer Institute, Antoni van Leeuwenhoek, Amsterdam, the Netherlands