1. Department of Tumor Biology University Medical Center Hamburg‐Eppendorf Germany
2. Institute for Prevention and Occupational Medicine of the German Social Accident Insurance Institute of the Ruhr University Bochum (IPA) Germany
3. Department of Transfusion Medicine University Medical Center Hamburg‐Eppendorf Germany
4. Lungenklinik Heckeshorn Helios Klinikum Emil von Behring Berlin Germany