[1] Ibaraki Univ, Fac Sci, Dept Environm Sci, Ibaraki 3108512, Japan
[2] Kyoto Univ, Dept Genome Repair Dynam, Ctr Radiat Biol, Sakyo Ku, Kyoto 6068501, Japan
[3] Kanazawa Med Univ, Dept Biochem, Uchinada, Ishikawa 9200293, Japan
[4] Univ Tokyo, Grad Sch Med, Sect Radiat Biol, Bunkyo Ku, Tokyo 1130033, Japan
[5] Kyoto Univ, Dept Radiat Genet, Fac Med, Sakyo Ku, Kyoto 6068501, Japan
[6] Nagasaki Univ, Grad Sch Biomed Sci, Nagasaki 8528523, Japan
[7] Kyoto Univ, Dept Late Effects Studies, Ctr Radiat Biol, Sakyo Ku, Kyoto 6068501, Japan