1 Department of Bone Marrow Transplantation and Oncohematology, Maria Sklodowska-Curie National Research Institute of Oncology, Gliwice Branch, Street: Wybrzeze Armii Krajowej 15, 44-102, Gliwice, Poland. iwona.mitrus@io.gliwice.pl.
2 Department of Bone Marrow Transplantation and Oncohematology, Maria Sklodowska-Curie National Research Institute of Oncology, Gliwice Branch, Street: Wybrzeze Armii Krajowej 15, 44-102, Gliwice, Poland.