Affiliation: | 1. Department of Hematology and Bone Marrow Transplantation, Poznan University of Medical Sciences, Poznań, Poland;2. Department of Hematology, Pomeranian Medical University, Szczecin, Poland;3. Department of Haematology Blood Neoplasms, and Bone Marrow Transplantation, Wroc?aw Medical University, Wroc?aw, Poland;4. Department of Hematology, Medical University of Bia?ystok, Bia?ystok, Poland |