1. Department of Pediatrics, Nihon University School of Medicine, Tokyo, Japan;
2. Department of Pediatrics, Nagoya University Graduate School of Medicine, Nagoya, Japan;
3. Department of Cell Transplantation and Regenerative Medicine, Tokai University School of Medicine, Isehara, Japan;
4. Children's Medical Center, Japanese Red Cross Nagoya First Hospital, Nagoya, Japan;
5. Kanagawa Children's Hospital, Yokohama, Japan;
6. Department of Hematology, Tokyo Metropolitan Komagome Hospital, Tokyo, Japan;
7. Ibaragi Children's Hospital, Mito, Japan;
8. Division of Immunology, Aichi Cancer Center, Nagoya, Japan;
9. Department of Hematology and Cell Therapy, Aichi Cancer Center, Nagoya, Japan; and
10. Department of Promotion for Blood and Marrow Transplantation, Aichi Medical University School of Medicine, Nagakute, Japan