1. aDepartment of Medical Oncology, VU University Medical Center, Cancer Center Amsterdam, Amsterdam;
2. bDepartment of Psychiatry and Amsterdam Public Health Research Institute, VU University Medical Center, Amsterdam;
3. cDepartment of Medical Psychology, Cancer Center Amsterdam, Amsterdam Public Health Institute, Academic Medical Center, Amsterdam;
4. dDepartment of Clinical Psychology, VU University, Amsterdam;
5. eDepartment of Medical Psychology, and
6. fDepartment of Clinical Epidemiology and Biostatistics, VU University Medical Center, Amsterdam;
7. gDepartment of Medical Oncology, Flevoziekenhuis, Almere;
8. hDepartment of Medical Oncology, Noordwest Ziekenhuisgroep, Alkmaar;
9. iDepartment of Medical Oncology, Meander Medical Center, Amersfoort;
10. jDepartment of Medical Oncology, Hospital Amstelland, Amstelveen;
11. kDepartment of Medical Oncology, Rijnstate Hospital, Arnhem;
12. lDepartment of Medical Oncology, Red Cross Hospital, Beverwijk;
13. mDepartment of Medical Oncology, Noordwest Ziekenhuisgroep, Den Helder;
14. nDepartment of Medical Oncology, Medisch Spectrum Twente, Enschede;
15. oDepartment of Medical Oncology, Spaarne Gasthuis, Haarlem;
16. pDepartment of Medical Oncology, Spaarne Gasthuis, Hoofddorp;
17. qDepartment of Medical Oncology, Medical Center Leeuwarden, Leeuwarden;
18. rDepartment of Medical Oncology, Alrijne Hospital, Leiden;
19. sDepartment of Medical Oncology, St. Antonius Hospital, Nieuwegein;
20. tDepartment of Medical Oncology, Zaans Medical Center, Zaandam; and
21. uDepartment of Medical Oncology, Waterland Hospital, Purmerend, the Netherlands.