1. Department of Neurosurgery, Stroke Center, Kuwana City Medical Center, Kuwana, Mie, Japan
2. Department of Neurology, Stroke Center, Kuwana City Medical Center, Kuwana, Mie, Japan
3. Department of Neurosurgery, Hisai Neurosurgery Clinic, Tsu, Mie, Japan
4. Department of Neurology, Suzuka Kaisei Hospital, Suzuka, Mie, Japan
5. Department of Neurology, Ise Municipal General Hospital, Ise, Mie, Japan