1. 1Department of Hematology, Oncology, and Rheumatology, Heidelberg University Hospital, Heidelberg, Germany
2. 2Asklepios Tumorzentrum Hamburg, AK Altona and AK St. Georg, Hamburg, Germany
3. 3Department of Hematology, Oncology and Clinical Immunology, University Hospital Düsseldorf, Düsseldorf, Germany
4. 4Department of Internal Medicine II, University Hospital Tübingen, Tübingen, Germany
5. 5Department for Hematology and Stem Cell Transplantation, University Hospital Essen, Essen, Germany
6. 6Department of Hematology and Oncology, Ruhr-University Bochum, Bochum, Germany
7. 7Department of Medicine, Hematology/Oncology, University Hospital Frankfurt, Goethe University, Frankfurt am Main, Germany
8. 8Department of Internal Medicine III, Clinic Chemnitz, Chemnitz, Germany
9. 9Department for Hematology, Oncology and Immunology, University Hospital Gießen and Marburg, Marburg, Germany
10. 10Department of Oncology, Hematology and Bone Marrow Transplant, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
11. 11Clinic for Oncology and Hematology, Hospital Barmherzige Brueder Regensburg, Regensburg, Germany
12. 12National Center for Tumor Diseases, University Hospital Heidelberg, Heidelberg, Germany
13. 13Medizinisches Versorgungszentrum am Kreiskrankenhaus Bergstraße gGmbH, Heppenheim, Germany