1. Department of Internal Medicine III University Medical Center of the Johannes Gutenberg University Mainz Germany
2. Department of Hematology University Hospital Essen, West German Cancer Center, University of Duisburg‐Essen Essen Germany
3. Department of Internal Medicine V University Hospital Heidelberg Heidelberg Germany
4. Department of Internal Medicine III Ludwig‐Maximilians University of Munich Munich Germany
5. Internal Medicine III Technical University of Munich Munich Germany
6. Department of Hematology/Oncology and Stem Cell Transplantation University Medical Center Freiburg Germany
7. Department of Internal Medicine II Jena University Hospital Jena Germany
8. Department of Internal Medicine II University of Schleswig‐Holstein Kiel Germany
9. Department of Internal Medicine III University Hospital Ulm Ulm Germany
10. Department of Medicine A University Hospital Münster Münster Germany
11. Division of Translational Pathology, Gerhard Domagk Institute of Pathology Münster University Hospital Münster Germany
12. Interdisciplinary Center for Clinical Trials (IZKS) University Medical Center of the Johannes Gutenberg University Mainz Germany
13. Department of Pathology University of Würzburg Würzburg Germany