1. International Clinical Research Center, St. Anne's University Hospital , Pekařská 664/53, Brno, 602 00 , Czech Republic
2. Department of Biology, Faculty of Medicine, Masaryk University , Brno, Kamenice 753/5, Brno, 625 00 , Czech Republic
3. Section of Immunology and General Pathology, Department of Medicine and Surgery, University of Perugia , Piazza Lucio Severi 1/8, Perugia, 06132 , Italy
4. International Clinical Research Center, Faculty of Medicine, Masaryk University , Kamenice 753/5, Brno, 625 00 , Czech Republic
5. Institute of Hematology and Blood Transfusion , U Nemocnice 2094/1, Prague 2, 128 00 , Czech Republic