1. Department of Paediatric Haematology-Oncology, ‘Aghia Sophia’ Children’s Hospital, Athens, Greece;
2. Flow Cytometry Department, Laboratory of Immunology, ‘G. Gennimatas’ General Hospital, Athens, Greece;
3. Department of Statistics, University of Economics, Athens, Greece;
4. Department of Molecular Cytogenetics, Laboratory of Hematology, ‘G. Gennimatas’ General Hospital, Athens, Greece;
5. Department of Hematology, University Hospital of Larisa, Thessaly Medical School, Larisa, Greece