1. Department of Pediatrics Nara Medical University Kashihara Japan
2. Department of Blood Coagulation Ogikubo Hospital Tokyo Japan
3. Department of Pediatrics St Marianna University School of Medicine Kawasaki Japan
4. Department of Transfusion Medicine Nagoya University Nagoya Japan
5. Department of Pediatrics University of Occupational and Environmental Health Kitakyushu Japan
6. Department of Laboratory Medicine Tokyo Medical University Tokyo Japan
7. Chugai Pharmaceutical Co., Ltd. Tokyo Japan