1. Department of Genetic Predisposition to Cancer Medical University of Lodz Lodz Poland
2. Department of Pediatrics Oncology and Hematology Medical University of Lodz Lodz Poland
3. Department of Hematological and Transfusion Immunology Institute of Hematology and Transfusion Medicine Warsaw Poland
4. Department of Laboratory Diagnostics and Clinical Immunology of Developmental Age Medical University of Warsaw Warsaw Poland
5. Department of Pediatric Bone Marrow Transplantation Oncology and Hematology Wroclaw Medical University Wroclaw Poland