1. Department of Neurology Graduate School of Medicine Kyoto University Kyoto Japan
2. Department of Neurosurgery Graduate School of Medicine Kyoto University Kyoto Japan
3. Department of Neurosurgery Graduate School of Medicine Tokushima University Tokushima Japan
4. Department of Developmental Neurobiology KAN Research Institute, Inc. Kobe Japan
5. Departments of Radiology and Neurology Massachusetts General Hospital and Harvard Medical School Charlestown Massachusetts USA