Poor Prognostic Factors for Surgical Treatment of Spinal Intramedullary Ependymoma (World Health Organization Grade II)

Osahiko Tsuji, Narihito Nagoshi, Ryota Ishii, Satoshi Nori, Satoshi Suzuki, Eijiro Okada, Nobuyuki Fujita, Mitsuru Yagi, Morio Matsumoto, Masaya Nakamura, Kota Watanabe