1. Department of Pediatric Hematology-Oncology and Bone Marrow Transplantation; Ankara Child Health and Diseases Hematology Oncology Training and Research Hospital; University of Health Sciences; Ankara Turkey
2. Stem Cell Research Laboratory; Ankara Child Health and Diseases Hematology Oncology Training and Research Hospital; University of Health Sciences; Ankara Turkey
3. Department of Statistics; Faculty of Science; Gazi University; Ankara Turkey