1. Medical Clinic I, University Hospital Carl Gustav Carus, Technical University Dresden, Dresden, Germany
2. National Center for Tumor Diseases, Dresden, Germany
3. Department of Medicine A, University Hospital Münster, Münster, Germany
4. Helios Klinikum, Berlin, Germany
5. Department for Hematology and Cellular Therapy, University Hospital, Leipzig, Germany
6. Department for Hematology and Oncology, University Hospital, Marburg, Germany
7. Medical Clinic III, Klinikum Chemnitz, Chemnitz, Germany
8. Department of Internal Medicine IV, University Hospital Halle Martin Luther, University Halle-Wittenberg, Halle, Germany
9. University Hospital Mannheim, Mannheim, Germany
10. Department of Medicine, Hematology/Oncology, Goethe University Frankfurt, Frankfurt, Germany
11. University Hospital Essen, Essen, Germany
12. Department of Hematology, Oncology, and Immunotherapy, University Hospital Erlangen, Erlangen, Germany
13. Klinikum Nürnberg, Paracelsus Medizinische Privatuniversität, Nuremberg, Germany
14. Department of Hematology, University Hospital Augsburg, Augsburg, Germany
15. University Hospital Aachen, Aachen, Germany
16. University Hospital Munich-Grosshadern, Department of Internal Medicine III, Ludwig-Maximilian University Munich, Munich, Germany
17. Institute for Medical Information Processing, Biometry, and Epidemiology, Ludwig-Maximilian University Munich, Munich, Germany