1. Division of Clinical Laboratory, Aomori Prefectural Central Hospital
2. Task Force on Pediatric Transfusion Guidelines, Transfusion Guidelines Committee of the Japan Society of transfusion Medicine and Cell Therapy
3. Department of Pediatrics, Medical Center Oomori Hospital, Toho University
4. Transfusion Guidelines Committee of the Japan Society of Transfusion Medicine and Cell Therapy
5. Department of Pediatrics, Asahikawa Medical University
6. Department of Pediatric Oncology, Central Hospital, National Cancer Research Center
7. Department of Pediatrics, Tokyo Medical and Dental University Hospital
8. Department of Pediatrics, Toyohashi Municipal Hospital
9. Department of Pediatrics and Child health, Nihon University School of Medicine
10. Department of Transfusion, Shizuoka Children' s Hospital
11. Department of Blood Transfusion Medicine, Nara Medical University
12. Department of Transfusion Medicine, Nagoya University Hospital