1. Kyoto University Graduate School of Medicine Department of Epilepsy, Movement Disorders and Physiology, , Kyoto 606-8507 , Japan
2. Kobe University Graduate School of Medicine Division of Neurology, , Kobe 650-0017 , Japan
3. Johns Hopkins University School of Medicine Department of Neurology, , MD 21287 , United States
4. Kyoto University Graduate School of Medicine Department of Neurology, , Kyoto 606-8507 , Japan
5. Shiga General Hospital Department of Neurosurgery, , Moriyama 524-8524 , Japan
6. Kyoto University Graduate School of Medicine Department of Neurosurgery, , Kyoto 606-8507 , Japan
7. Ehime University Graduate School of Medicine Department of Neurosurgery, , Toon 791-0295 , Japan