1. Department of Pediatrics; Nara Medical University; Kashihara, Nara Japan
2. Pediatrics; St. Marianna University School of Medicine; Kawasaki Japan
3. Department of Transfusion Medicine; Nagoya University Hospital; Nagoya Japan
4. Pediatrics; Kyushu University; Hakata, Fukuoka Japan
5. Pediatrics; Sapporo Tokushukai Hospital; Sapporo Japan
6. Hematology-Oncology; Shizuoka Children Hospital; Shizuoka Japan
7. Laboratory Medicine; Tokyo Medical University; Tokyo Japan
8. Department of Molecular Genetics of Coagulation Disorders; Tokyo Medical University; Tokyo Japan