1. Department of Medicine II, Goethe University Hospital, Frankfurt, Germany;
2. University Medicine, Mainz, Germany;
3. Department of Hematology, Hemostasis, Oncology, and Stem Cell Transplantation, Medical School Hannover, Hannover, Germany;
4. University Hospital Schleswig Holstein, Campus Kiel, Kiel, Germany;
5. University Hospital, Essen, Germany;
6. University Hospital, Düsseldorf, Germany;
7. University at Cologne, Cologne, Germany;
8. Robert Bosch Hospital, Stuttgart, Germany;
9. University Hospital, Regensburg, Germany;
10. Department of Medicine I, University Hospital, Dresden, Germany;
11. University Hospital Charité, Campus Benjamin-Franklin, Berlin, Germany;
12. Hospital Schwabing, München, Germany;
13. Department of Medicine, Hematology, and Oncology, University Hospital, Münster, Germany;
14. Asklepios Hospital St Georg, Hamburg, Germany;
15. Department of Internal Medicine III, University Hospital, Ulm, Germany;
16. Klinikum Nürnberg, Nord, Germany; and
17. University Hospital, Rostock, Germany