[1] Jichi Med Sch, Div Pediat Surg, Dept Surg, Tochigi, Japan
[2] Hamamatsu Univ Sch Med, Div Hosp Pharm, Shizuoka, Japan
[3] Gifu Pharmaceut Univ, Dept Pharmaceut Engn, Gifu, Japan
[4] Natl Res Inst Child Hlth & Dev, Lab Transplantat Immunol, Setagaya Ku, Tokyo, Japan
[5] Jichi Med Sch, Div Transplantat Surg, Dept Surg, Tochigi, Japan