1. Department of Neuromuscular Research National Institute of Neuroscience, National Center of Neurology and Psychiatry Tokyo Japan
2. Department of Clinical Genome Analysis Medical Genome Center, National Center of Neurology and Psychiatry Tokyo Japan
3. Department of Neurology National Center Hospital, National Center of Neurology and Psychiatry Tokyo Japan
4. Department of Pediatrics Tokyo Medical University Hospital Tokyo Japan
5. Department of Pediatrics Akita University Faculty of Medicine Akita Japan