1. Department of Epidemiology Netherlands Cancer Institute Amsterdamthe Netherlands
2. Department of Radiation Oncology Netherlands Cancer Institute Amsterdamthe Netherlands
3. Department of Radiotherapy Leiden University Medical Centre Leidenthe Netherlands
4. Department of Radiotherapy Radboud University Medical Centre Nijmegenthe Netherlands
5. Department of Radiotherapy Erasmus Medical Centre Rotterdamthe Netherlands
6. Department of Haematology University Medical Centre Utrecht Utrechtthe Netherlands
7. Department of Haematology Amsterdam UMC, Location VU Medical Centre Amsterdamthe Netherlands
8. Department of Haematology University Medical Centre Groningen Groningenthe Netherlands
9. Department of Radiotherapy MAASTRO Clinic Maastrichtthe Netherlands
10. Department of Haematology Reinier de Graaf Group Delftthe Netherlands
11. Department of Haematology Isala Zwollethe Netherlands
12. Department of Radiotherapy Zeeuws Radiotherapy Institute Vlissingenthe Netherlands
13. Department of Haematology Adrz Hospital Goesthe Netherlands
14. Department of Haematology Albert Schweitzer Hospital Dordrechtthe Netherlands
15. Department of Haematology Amphia Hospital Bredathe Netherlands
16. Department of Internal Medicine Rijnstate Hospital Arnhem the Netherlands