1. Pediatric Ward A, Haemek Medical Center, Afula, Israel
2. Pediatric Hematology-Oncology, Schneider Children’s Medical Center of Israel, Petach Tikva, Israel
3. Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
4. The Coagulation Laboratory, Rabin Medical Center, Beilinson Hospital, Petach Tikva, Israel