1. Department of Hematology, Wroclaw Medical University, Wrocław, Poland;
2. Faculty of Mathematics and Information Science, Warsaw University of Technology, Warsaw, Poland;
3. Department of Oncology, Center of Oncology of Professor Franciszek Łukaszczyk, Bydgoszcz, Poland;
4. Department of Hematology, Collegium Medicum of the Jagiellonian University, Kraków, Poland;
5. Department of Oncology and Radiotherapy, Gdynia Oncology Center, Gdynia, Poland;
6. Maria Skłodowska-Curie Memorial Cancer Center and Institute of Oncology, Gliwice, Poland;
7. Regional Oncology Centre in Gdansk, Gdańsk, Poland;
8. Department of Hematology, University of Warmia and Mazury, Olsztyn, Poland;
9. Department of Hematology, University of Medical Sciences, Poznan, Poland;
10. Internal Medicine and Oncology Clinic, Silesian Medical University, Katowice, Poland;
11. Department of Chemotherapy, Regional Cancer Center, Lodz, Poland;
12. Department of Hematology, Brzozow Oncology Center, Brzozów, Poland;
13. Department of Haematology, Oncology and Internal Medicine, The Medical University of Warsaw, Warsaw, Poland;
14. Department of Haematology, Military Institute of Medicine in Warsaw, Warsaw, Poland;
15. Department of Hematology KSW No.1 and Medical Faculty, University of Rzeszow, Rzeszow, Poland;
16. Department of Hematology, Provincial Specialist Hospital, Legnica, Poland;
17. Department of Hematology, Provincial Specialist Hospital, Opole, Poland;
18. Department of Oncological Propaedeutics, Medical University of Gdańsk, Gdańsk, Poland;
19. Department of Hematology and Transplantology, Medical University of Gdańsk, Gdańsk, Poland