1. Institute of Human Genetics Polish Academy of Sciences; Poznań Poland
2. Department of Microbiology and Immunology; Medical University of Silesia in Katowice; Zabrze Poland
3. Department of Pediatric Hematology and Oncology; Medical University of Silesia in Katowice; Zabrze Poland
4. Department of Pediatric Hematology, Oncology and Transplantology; Cytogenetic Laboratory; Children's University Hospital; Medical University of Lublin; Lublin Poland