1 Division of Hematology and Oncology, Department of Pediatrics, Recep Tayyip Erdoğan University School of Medicine, Rize, Turkey.
2 Division of Pediatric Gastroenterology, Department of Pediatrics, Süleyman Demirel University School of Medicine, Isparta, Turkey.
3 Division of Hematology and Oncology, Department of Pediatrics, İstanbul University Cerrahpaşa School of Medicine, Rize, Turkey; Hemophilia Society of Turkey.