[1] Saitama Childrens Med Ctr, Dept Hematol Oncol, Saitama, Japan
[2] Saitama Childrens Med Ctr, Dept Transplant Surg, Saitama, Japan
[3] Saitama Childrens Med Ctr, Dept Gastroenterol & Hepatol, Saitama, Japan
[4] Saitama Childrens Med Ctr, Dept Radiol, Saitama, Japan
[5] Saitama Childrens Med Ctr, Dept Pediat Surg, Saitama, Saitama, Japan
[6] Saitama Childrens Med Ctr, Dept Clin Res, Saitama, Japan
[7] Hirosaki Univ, Dept Pediat, Grad Sch Med, Hirosaki, Aomori, Japan