1. L. Hirszfeld Institute of Immunology and Experimental Therapy; Polish Academy of Sciences; Wroclaw Poland
2. Lower Silesian Centre for Cellular Transplantation with National Bone Marrow Donor Registry; Wroclaw Poland
3. Department of Haematology, Oncology and Internal Medicine; Medical University of Warsaw; Warsaw Poland
4. Institute of Haematology and Transfusion Medicine; Warsaw Poland
5. Department of Haematology and Bone Marrow Transplantation; Medical University of Silesia; Katowice Poland
6. Department of Hematology and Transplantology; Medical University of Gdansk; Gdansk Poland
7. Department of Paediatric Haematology, Oncology and Transplantology; Medical University; Lublin Poland
8. Chair of Clinical Immunology and Transplantation Polish-American Institute of Pediatrics; Jagiellonian University Medical College; Department of Transplantation Children's University Hospital; Cracow Poland