1 Department of Hematology, Blood Neoplasms and Bone Marrow Transplantation, Wroclaw Medical University, Wrocław, Poland. maria.podolak-dawidziak@umw.edu.pl
2 Institute of Hematology and Blood Transfusion, Warsaw, Poland
3 Department of Disorders of Hemostasis and Internal Medicine Institute of Hematology and Blood Transfusion, Warsaw, Poland