1. Department of Neurosurgery Jichi Medical University Tochigi Japan
2. Central Research Laboratory, Hamamatsu Photonics K.K. Shizuoka Japan
3. Division of Neurological Gene Therapy Jichi Medical University Tochigi Japan
4. Department of Pediatrics Jichi Medical University Tochigi Japan
5. Center for Gene and Cell Therapy, The Institute of Medical Science The University of Tokyo Tokyo Japan