1. Department of Hematology, National Medical Institute of the Ministry of Interior and Administration, 137 Wołoska Str., 02-507 Warsaw, Poland
2. Department of Clinical Transplantology, Medical University of Lublin, 7 Chodźki Str., 20-093 Lublin, Poland
3. Department of Hematology, Oncology and Internal Medicine, Medical University of Warsaw, 1a Banacha Str., 02-097 Warsaw, Poland