[1] Kokura Mem Hosp, Stroke Ctr, Dept Neurosurg, Kitakyushu, Fukuoka, Japan
[2] Kokura Mem Hosp, Stroke Ctr, Dept Neurol, Kitakyushu, Fukuoka, Japan
[3] Kyoto Univ, Dept Neurosurg, Grad Sch Med, Kyoto, Japan
[4] Koseikai Takeda Hosp, Stroke Ctr, Dept Neurosurg, Kyoto, Japan
[5] Natl Cerebral & Cardiovasc Ctr, Dept Neurosurg, Osaka, Japan
[6] Gifu Univ Hosp, Innovat & Clin Res Promot Ctr, Gifu, Japan
[7] Natl Hosp Org Kyushu Med Ctr, Dept Cerebrovasc Med & Neurol, Fukuoka, Japan
[8] Shiga Gen Hosp, Dept Neurosurg, Moriyama, Japan
[9] Univ Calif Los Angeles, Dept Neurol, Los Angeles, CA 90024 USA
[10] Kyushu Univ, Grad Sch Med Sci, Dept Neurol, Fukuoka, Japan
[11] Fukuoka Saiseikai Gen Hosp, Dept Neurol, Fukuoka, Japan
[12] Natl Cerebral & Cardiovasc Ctr, Dept Cerebrovasc Med, Osaka, Japan
[13] Natl Hosp Org Nagoya Med Ctr, Dept Neurol, Nagoya, Aichi, Japan
[14] St Marys Hosp, Dept Neurosurg, Kurume, Fukuoka, Japan
[15] Kyushu Univ, Grad Sch Med Sci, Dept Neurosurg, Fukuoka, Japan
[16] Japan Community Hlth Care Org Kyushu Hosp, Dept Neurol, Kitakyushu, Fukuoka, Japan
[17] Int Univ Hlth & Welf, Dept Neurol, Narita, Japan
[18] Aichi Canc Ctr Res Inst, Div Canc Epidemiol & Prevent, Nagoya, Aichi, Japan
[19] Nagoya Univ, Dept Canc Epidemiol, Grad Sch Med, Nagoya, Aichi, Japan
[20] Kyushu Univ, Grad Sch Med Sci, Dept Med & Clin Sci, Fukuoka, Japan
[21] Fujita Hlth Univ, Dept Comprehens Strokol, Toyoake, Aichi, Japan