1. Department of Cancer Prevention, School of Public Health; Medical University of Silesia; Katowice Poland
2. Department of Bone Marrow Transplantation, Branch Gliwice; Comprehensive Cancer Center M. Sklodowska-Curie Memorial Institute; Gliwice Poland
3. Department of Haematology, Hematopoietic Malignancies and BMT; Medical University; Wroclaw Poland
4. Department of Haematology, Collegium Medicum; Jagiellonian University; Cracow Poland
5. Department of Haematology and Transplantology; Medical University; Gdansk Poland
6. Department of Haematology and Bone Marrow Transplantation; Medical University of Silesia; Katowice Poland
7. Samodzielna Pracownia Transplantologii Klinicznej; Uniwersytet Medyczny; Lublin Poland
8. Military Medical Institute; Warsaw Poland
9. Department of Hematology; Medical University; Bialystok Poland
10. Department of Hematology, Oncology and Internal Medicine; Medical University; Warsaw Poland
11. Department of Haematology; Institute of Haematology and Transfusion Medicine; Warsaw Poland
12. Department of Internal Medicine and Haematology; SPSK Nr 1; Szczecin Poland
13. Department of Haematology, Copernicus Memorial Hospital; Medical University; Lodz Poland
14. Department of Hematology and Proliferative Diseases of The Hematopoietic Systems; Poznan University of Medical Sciences; Poznan Poland