1. Laboratory for Human Disease Models RIKEN Center for Integrative Medical Sciences, Yokohama, Japan;
2. Department of Pediatrics and Developmental Biology, Tokyo Medical and Dental University, Tokyo, Japan;
3. Laboratory for Integrative Genomics, RIKEN Center for Integrative Medical Sciences, Yokohama, Japan;
4. Division of Leukemia and Lymphoma, Children's Cancer Center, National Center for Child Health and Development, Tokyo, Japan;
5. Department of Pediatrics, Ehime University Graduate School of Medicine, Ehime, Japan;
6. Department of Hematology/Oncology, Saitama Children's Medical Center, Saitama, Japan;
7. The Jackson Laboratory, Bar Harbor, ME; and
8. Kazusa DNA Research Institute, Kisarazu, Chiba, Japan