1 Department of Medical Genetics, Tohoku University School of Medicine, Sendai, Japan.
2 Department of Pediatrics, Yokohama City University Hospital, Yokohama, Japan.
3 YCU Center for Novel and Exploratory Clinical Trials, Yokohama City University Hospital, Yokohama, Japan.
4 Department of Pediatrics, Tohoku University Graduate School of Medicine, Sendai, Japan.
5 Department of Hematology and Oncology, Miyagi Children's Hospital, Sendai, Japan.
6 Division of Cell Proliferation, and.
7 Division of Interdisciplinary Medical Sciences, United Center for Advanced Research and Translational Medicine, Tohoku University Graduate School of Medicine, Sendai, Japan; and.
8 Department of Microbiology and Immunology, Tohoku University Graduate School of Medicine, Sendai, Japan.