1. Department of Internal Medicine III, University Hospital of Ulm, Ulm, Germany
2. Department of Internal Medicine V, Heidelberg University Hospital, Heidelberg, Germany
3. Division of Biostatistics, German Cancer Research Center Heidelberg, Heidelberg, Germany
4. Department of Internal Medicine II, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
5. Department of Hematology, Medical Oncology and Pneumology, University Medical Center Mainz, Mainz, Germany
6. Department of Hematology, Oncology, and Clinical Immunology, University of Duesseldorf, Medical Faculty, Duesseldorf, Germany
7. Internal Medicine III, University Hospital of Bonn, Bonn, Germany
8. Klinik für Innere Medizin I, Universitätsklinikum Freiburg, Freiburg, Germany
9. Department of Hematology and Oncology, Hospital Essen-Werden, Essen, Germany
10. Department of Internal Medicine III, University Hospital Klinikum Rechts der Isar, Munich, Germany
11. Department of Internal Medicine II, University Hospital of Schleswig-Holstein, Kiel, Germany
12. Department of Internal Medicine III, Hanuschkrankenhaus Wien, Wien, Austria
13. Department of Hematology and Oncology, University Hospital of Göttingen, Göttingen, Germany
14. Klinikum der Landeshauptstadt Stuttgart, Stuttgart, Germany
15. Department of Hematology and Oncology, Städtisches Klinikum Karlsruhe, Karlsruhe, Germany
16. IIIrd Medical Department, Paracelsus Medical University Salzburg; Salzburg Cancer Research Institute; and Cancer Cluster Salzburg, Salzburg, Austria
17. Department of Hematology and Oncology, Klinikum Bremen Mitte, Bremen, Germany
18. Department Hematology and Oncology, Braunschweig Municipal Hospital, Braunschweig, Germany
19. Department of Hematology and Oncology, Klinikum am Gesundbrunnen, Heilbronn, Germany
20. Department of Internal Medicine V, University Hospital of Innsbruck, Innsbruck, Austria
21. Department of Internal Medicine IV, University Hospital of Gießen, Gießen, Germany
22. Department of Hematology and Oncology, Hospital Elisabethinen Linz, Linz, Austria
23. Department of Hematology and Oncology, Malteser Krankenhaus St Franziskus-Hospital, Flensburg, Germany
24. Department of Hematology, Hemostaseology, Oncology, and Stem Cell Transplantation, Hannover Medical School, Hannover, Germany