1. Division of Neonatal Intensive Care Center of Perinatal Medicine Nara Medical University Hospital Kashihara Nara Japan
2. Department of Pediatrics Nara Medical University Kashihara Nara Japan
3. Advanced Medical Science of Thrombosis and Hemostasis Nara Medical University Kashihara Nara Japan
4. Nara Red Cross Blood Center Nara City Nara Japan