1 Department of Research and Development, Netherlands Comprehensive Cancer Organization, Utrecht, The Netherlands.
2 Amsterdam University Medical Center, University of Amsterdam, Department of Hematology, Cancer Center Amsterdam, Lymphoma and Myeloma Center Amsterdam, Amsterdam, The Netherlands.
3 Department of Hematology, Erasmus MC Cancer Institute, University Medical Center Rotterdam, Rotterdam, The Netherlands.
4 Amsterdam University Medical Center, Vrije Universiteit Amsterdam, Department of Hematology, Cancer Center Amsterdam, Amsterdam, The Netherlands.
5 Department of Registration, Netherlands Comprehensive Cancer Organization, Utrecht, The Netherlands.
6 Department of Internal Medicine, Jeroen Bosch Hospital, Den Bosch, The Netherlands.
7 Department of Internal Medicine, Reinier de Graaf Gasthuis, Delft, The Netherlands.
8 Department of Hematology, Leiden University Medical Center, Leiden, The Netherlands.
9 Department of Public Health, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands.