1. Department of Pediatrics, Oncology and Hematology Medical University of Lodz Lodz Poland
2. Postgraduate School of Molecular Medicine Medical University of Warsaw Warsaw Poland
3. Department of Pediatric Bone Marrow Transplantation, Oncology, and Hematology Wroclaw Medical University Wroclaw Poland
4. Department of Chemical Biology and Bioimaging, Faculty of Chemistry Wroclaw University of Science and Technology Wroclaw Poland
5. Department of Clinical Immunology, Institute of Pediatrics Jagiellonian University Medical College Krakow Poland
6. Department of Genetic Predisposition to Cancer Medical University of Lodz Lodz Poland