1. Department of Hematology, Erasmus MC Cancer Institute, University Medical Center Rotterdam, Rotterdam, The Netherlands;
2. National Genetic Center, Royal Hospital, Ministry of Health, Muscat, Sultanate of Oman;
3. Department of Hematology, Amsterdam University Medical Center, Amsterdam, The Netherlands;
4. Department of Hematology, Ziekenhuis Netwerk Antwerpen, Antwerp, Belgium;
5. Department of Hematology, University Hospital Gasthuisberg, Leuven, Belgium;
6. Department of Hematology, Isala Hospital, Zwolle, The Netherlands;
7. Department of Oncology, University Hospital, Inselspital, Bern, Switzerland;
8. Department of Hematology, Saint Antonius Hospital, Nieuwegein, The Netherlands;
9. Department of Hematology, University Medical Center Groningen, Groningen, The Netherlands; and
10. Department of Clinical Genetics, University Medical Center Rotterdam, Rotterdam, The Netherlands