1. Department of Neuropathology Research Institute for Brain and Blood Vessels, Akita Cerebrospinal and Cardiovascular Center Akita Japan
2. Akita University School of Medicine Akita Japan
3. Department of Neurosurgery Medical Corporation Moriyamakai, Moriyama Neurological Center Hospital Tokyo Japan
4. Department of Neurosurgery, Adachi Medical Center Tokyo Women's Medical University Tokyo Japan
5. Epilepsy Center TMG Asaka Medical Center Saitama Japan
6. Center for Pediatric Neurology, Neurorehabilitation, and Epileptology Schoen‐Clinic Vogtareuth Germany
7. Department of Neuropathology University Hospital Erlangen, Friedrich‐Alexander University Erlangen Germany