1. Department of Internal Medicine IV, Oncology/Hematology Martin‐Luther‐University Halle‐Wittenberg Halle (Saale) Germany
2. Department of Oncology and Hematology BMT with Section of Pneumology Hubertus Wad Tumorzentrum University Cancer Center HamburgUniversity Medical Center Hamburg‐Eppendorf Hamburg Germany
3. ENPICOM B.V. ′s‐Hertogenbosch the Netherlands
4. First Department of Medicine University Medical Center Hamburg‐Eppendorf Hamburg Germany