[1] Kinki Univ, Sch Med, Dept Med Oncol, Osaka 5898511, Japan
[2] Mitsubishi Chem Safety Inst Ltd, Kashima Lab, Res Div Adv Technol, Ibaraki, Japan
[3] Kinki Univ, Sch Med, Dept Pathol, Osaka 589, Japan
[4] Kinki Univ, Sch Med, Div Hosp Pathol, Osaka 589, Japan
[5] Kinki Univ, Sch Med, Dept Genome Biol, Osaka 589, Japan