1. Department of Experimental Hematooncology Medical University of Lublin Lublin Poland
2. Department of Hematology St John's Cancer Centre Lublin Poland
3. Department of Clinical Transplantology Medical University of Lublin Lublin Poland
4. Department of Hematology Medical University of Bialystok Białystok Poland
5. Department of Hematology Warmian‐Masurian Cancer Center of the Ministry of the Interior and Administration's Hospital Olsztyn Poland
6. Department of Hematology, Blood Neoplasms and Bone Marrow Transplantation Wroclaw Medical University Wrocław Poland
7. Department of Hematology and Transplantation Lower Silesian Center of Oncology Wrocław Poland
8. Department of Hematology Institute of Hematology and Transfusion Medicine Warsaw Poland
9. Department of Hematology and Bone Marrow Transplantation Nicolaus Copernicus Hospital Torun Poland
10. Department of Hematology, Transplantation and Internal Medicine Medical University of Warsaw Warsaw Poland
11. Department of Hematology, Oncology, and Tumor Immunology Charité—Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt‐Universität zu Berlin Berlin Germany
12. German Cancer Consortium (Deutsches Konsortium für Translationale Krebsforschung; DKTK) Berlin Germany