1. Department of Pediatrics, Harran University Medical Faculty, Sanliurfa, Turkey.
2. Department of Pediatric Hematology/Oncology, Marmara University Faculty of Medicine, Istanbul, Turkey.
3. Department of Clinical Biochemistry, Harran University Medical Faculty, Sanliurfa, Turkey.
4. Department of Pediatric Hematology/Oncology, Eskişehir Osmangazi University Faculty of Medicine, Eskisehir, Turkey.