*Division of Pediatric Hematology and Oncology
§Division of Pediatric Surgery Ibaraki Children’s Hospital
‡Institute of Pediatric Medical and Cancer Research, Ibaraki Children’s Hospital, Mito
†Department of Child Health and Development, Graduate School of Medical and Dental Sciences Tokyo Medical and Dental University Tokyo, Japan
H.H. and A.Y. contributed to the current work equally.
H.H. and A.Y.: wrote the manuscript and contributed to the design of the study. K.K., T.Y., and M.T.: contributed to interpretation of the data.
Supported in part by subsidy for science and technology promotion locating electronic power plant from Ministry of Education, Culture, Sports, and Technology (provided to K.K.).
The authors declare no conflict of interest.