[1] (e-mail: tnakahar@iwa.att.ne.jp,
[2] Tel.: +82-257-5527 Fax: +82-257-5529),undefined
[3] Department of Neurosurgery,undefined
[4] Hiroshima University School of Medicine,undefined
[5] 1-2-3 Kasumi,undefined
[6] Minami-ku,undefined
[7] Hiroshima,undefined
[8] 734,undefined
[9] Japan,undefined