[1] Jikei Univ, Sch Med, Radioisotope Res Ctr, Minato Ku, Tokyo 1058461, Japan
[2] Jikei Univ, Sch Med, Dept Microbiol 2, Minato Ku, Tokyo 1058461, Japan
[3] Jikei Univ, Sch Med, Dept Lab Med, Minato Ku, Tokyo 1058461, Japan
[4] Kohno Clin Med Res Inst, Dept Mol Genet, Shinagawa Ku, Tokyo 1400001, Japan