Institution: | (1) Department of Neurosurgery, Okazaki City Hospital, 3-1 Goshoai, Koryuji-cho, Okazaki 444-8553, Japan;(2) Department of Neurosurgery, Nagoya University Graduate School of Medicine, Nagoya, Japan;(3) Department of Neurosurgery, Iwata City Hospital, Iwata, Japan |