[1] Natl Canc Ctr, Div Brain Tumor Translat Res, Tokyo, Japan
[2] Nagoya Univ, Dept Neurosurg, Grad Sch Med, Nagoya, Aichi, Japan
[3] Univ Tokyo, Dept Neurosurg, Tokyo, Japan
[4] Yokohama City Univ, Dept Neurosurg, Yokohama, Kanagawa, Japan
[5] Saitama Med Univ, Dept NeuroOncol, Int Med Ctr, Moroyama, Saitama, Japan
[6] Saitama Med Univ, Dept Neurosurg, Int Med Ctr, Moroyama, Saitama, Japan
[7] Natl Canc Ctr Hosp, Dept Neurosurg & NeuroOncol, Chuo City, Japan
[8] Gunma Univ, Dept Human Pathol, Grad Sch Med, Maebashi, Gumma, Japan