1. Japanese Red Cross Tokyo Blood Center, Tokyo, Japan;
2. Department of HSCT Data Management, Nagoya University School of Medicine, Nagoya, Japan;
3. Tokyo Cord Blood Bank, Tokyo, Japan;
4. Department of Transfusion Medicine, Hyogo College of Medicine, Nishinomiya, Japan;
5. Japanese Red Cross Fukuoka Blood Center, Fukuoka, Japan;
6. Japanese Red Cross Osaka North Blood Center, Osaka, Japan;
7. Japanese Red Cross Hokkaido Blood Center, Sapporo, Japan; and
8. Department of Cell Transplantation & Regenerative Medicine, Tokai University School of Medicine, Isehara, Japan