1. Department of Clinical Transplantology, Medical University of Lublin, 20-081 Lublin, Poland
2. Department of Hematooncology and Bone Marrow Transplantation, Medical University of Lublin, 20-081 Lublin, Poland
3. Department of Hematology, Collegium Medicum, Jagiellonian University, 30‑051 Cracow, Poland
4. Department of Hematology, Specialist Muncipial Hospital, 87‑100 Torun, Poland
5. Department of Hematology, Holycross Cancer Center, 25‑734 Kielce, Poland
6. Department of Hematology, Blood Neoplasms and Bone Marrow Transplantation, Wroclaw Medical University, 50‑367 Wroclaw, Poland
7. Department of Lymphoid Malignancies, Institute of Oncology, 02‑781 Warsaw, Poland
8. Department of Hematology, University Hospital in Zielona G�ra, 65‑046 Zielona G�ra, Poland
9. Department of Hematology and Bone Marrow Transplantation, Medical University of Silesia, 40‑032 Katowice, Poland
10. Department of Hematology, St. John of Dukla Lublin Region Cancer Center, 20‑090 Lublin, Poland
11. Department of Hematology, Ludwik Rydygier Memorial Specialized Hospital, 31‑826 Cracow, Poland
12. Department of Hematology and Transplantology, Medical University of Gdansk, 80‑211 Gdansk, Poland
13. Department of Hematology, Institute of Hematology and Transfusion Medicine, 00‑791 Warsaw, Poland
14. Department of Hematology and Bone Marrow Transplantation, Poznan University of Medical Sciences, 60‑569 Poznan, Poland
15. Department of Hematology, Oncology and Internal Medicine, Medical University of Warsaw, 02‑097 Warsaw, Poland
16. Department of Oncologic Hematology, Specialist Hospital, 36‑200 Brzoz�w, Poland
17. Department of Hematology, Independent Public Health Care of Ministry of The Interior and Administration, 10‑228 Olsztyn, Poland