[1] Department of Neurosurgery,
[2] Nagoya University School of Medicine,undefined
[3] 65 Tsurumai,undefined
[4] Showa,undefined
[5] Nagoya,undefined
[6] 466–8550,undefined
[7] Japan Tel.: +81-52-744-2353,undefined
[8] Fax: +81-52-744-2360,undefined
[9] Department of Neurosurgery,undefined
[10] Kasugai City Hospital,undefined
[11] Kasugai,undefined
[12] Japan,undefined
[13] Department of Neurosurgery,undefined
[14] Postgraduate Institute of Medical Education and Research,undefined
[15] Chandigarh,undefined
[16] India,undefined