1. 1Department of Research and Development, Netherlands Comprehensive Cancer Organization, Utrecht, The Netherlands;
2. 2Department of Hematology, Martini Hospital, Groningen, The Netherlands;
3. 3Department of Hematology, University Medical Center Groningen, Groningen, The Netherlands;
4. 4Division of Hematology, Department of Internal Medicine, GROW School for Oncology and Developmental Biology, Maastricht University Medical Center, Maastricht, The Netherlands;
5. 5Department of Hematology, Amsterdam University Medical Center, Amsterdam, The Netherlands;
6. 6Department of Hematology, Erasmus MC Cancer Institute, Rotterdam, The Netherlands;
7. 7Department of Hematology, Haga Hospital, The Hague, The Netherlands;
8. 8Department of General Medical Oncology, University Hospitals Leuven, Leuven, Belgium;
9. 9Department of Hematology, Isala Hospital, Zwolle, The Netherlands;
10. 10Department of Hematology, University Medical Center Utrecht, Utrecht, The Netherlands; and
11. 11Department of Pathology and
12. 12Department of Hematology, Leiden University Medical Center, Leiden, The Netherlands