1. Laboratory of Hematology, Department of Laboratory Medicine; Radboud UMC; Nijmegen The Netherlands
2. Department of Immunology; Erasmus MC, University Medical Center Rotterdam; Rotterdam The Netherlands
3. Department of Hematology; Leiden University Medical Center; Leiden The Netherlands
4. Department of Immunocytology; Sanquin Blood Supply; Amsterdam The Netherlands
5. Department of Trials and Statistics; Erasmus MC, University Medical Center Rotterdam; Rotterdam The Netherlands
6. Department of Internal Oncology; Erasmus MC University Medical Center Rotterdam; Rotterdam The Netherlands