1. Department of Hematology, Transplantation and Internal Medicine University Clinical Center, Medical University of Warsaw Warszawa Poland
2. Foundation for the Infection Prevention Institute Warsaw Poland
3. Department of Microbiology University Clinical Center, Medical University of Warsaw Warszawa Poland
4. Chair and Department of Dental Microbiology Medical University of Warsaw Warszawa Poland
5. Department of Stem Cell Transplantation Institute of Hematology and Transfusion Medicine Warsaw Poland