1. Department of Internal Medicine III, University of Ulm, Ulm, Germany;
2. Department of Hematology and
3. Department of Trials and Statistics, Erasmus University Medical Center, Rotterdam, The Netherlands;
4. Department of Hematology, Hemostasis, Oncology and Stem Cell Transplantation and
5. Institute of Cell and Molecular Pathology, Hannover Medical School, Hannover, Germany;
6. Department of Hematology, Oncology and Clinical Immunology, Heinrich-Heine-University, Düsseldorf, Germany;
7. Department of Internal Medicine, University of Homburg, Homburg, Germany;
8. Department of Internal Medicine III, University of Munich, Munich, Germany;
9. Department of Experimental Hematology, University Medical Center Groningen, University of Groningen, The Netherlands;
10. Department of Hematology, University Medical Center Utrecht, Utrecht, The Netherlands;
11. Division of Hematology, University Hospital, Zürich, Switzerland;
12. Department of Hematology, University Hospital, Basel, Switzerland;
13. Department of Hematology, University Hospital, Bern, Switzerland;
14. Department of Hematology, University Hospital Gasthuisberg, Leuven, Belgium; and
15. Division of Hematology, VU University Medical Center, Amsterdam, The Netherlands