1. Department of Pediatric Intensive Care, Faculty of Medicine, University of Erciyes, Kayseri, Turkey
2. Department of Pediatric Cardiology, Faculty of Medicine, University of Erciyes, Kayseri, Turkey
3. Department of Pediatric Hematology, Faculty of Medicine, University of Erciyes, Kayseri, Turkey
4. Faculty of Medicine, Blood Center, University of Erciyes, Kayseri, Turkey
5. Department of Biostatistics, Faculty of Medicine, University of Izmir Katip Çelebi, Izmir, Turkey