1. Student Scientific Society of Department of Pediatric Hematology, Oncology and Transplantology, Medical University of Lublin, 20-093 Lublin, Poland
2. Department of Pediatric Oncology, Hematology and Transplantology, Poznan University of Medical Sciences, 60-572 Poznań, Poland
3. Independent Laboratory of Genetic Diagnostics, Medical University of Lublin, 20-093 Lublin, Poland
4. Department of Pediatric Hematology, Oncology and Transplantation, Medical University of Lublin, 20-093 Lublin, Poland