Institution: | (1) Department of Neurosurgery, Tohoku University Graduate School of Medicine, 1–1 Seiryo-machi, Aoba-ku, Sendai Miyagi, 980–8574, Japan;(2) Jiro Suzuki Memorial Gamma House, Furukawa-Seiryo Hospital, Osaki, Miyagi, Japan;(3) Department of Pathology, Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan |