[1] NIRS, Heavy Ion Radiobiol Res Grp, Res Ctr Charged Particle Therapy, Inage Ku, Chiba 2638555, Japan
[2] Osaka Univ, Dept Mat & Life Sci, Grad Sch Engn, SORST,JST, Suita, Osaka 5650871, Japan
[3] Shujitsu Univ, Sch Pharm, Okayama 7038516, Japan
[4] Tohoku Univ, NICHe, Aoba Ku, Sendai, Miyagi 9808579, Japan