1. Afyonkarahisar Health Sciences University Faculty of Medicine, Department of Pediatrics, Division of Pediatric Hematology and Oncology, Afyonkarahisar, Turkey
2. Erzurum Regional Training and Research Hospital, Clinic of Pediatrics, Division of Pediatric Hematology and Oncology, Erzurum, Turkey
3. Erzurum Regional Training and Research Hospital, Clinic of Pediatrics, Division of Pediatric Cardiology, Erzurum, Turkey