[1] Gifu Univ, Grad Sch Med, Dept Tumor Pathol, Gifu, Japan
[2] Nagoya Univ, Grad Sch Med, Obstet & Gynecol, Nagoya, Aichi, Japan
[3] Nagoya Univ, Grad Sch Med, Bell Res Ctr, Nagoya, Japan
[4] Gifu Univ, Dept Neurosurg, Grad Sch Med, Gifu, Japan
[5] Nagoya Univ, Sch Med, Dept Obstet Gynecol, Nagoya, Aichi, Japan