1 Department of Neuromuscular Research, National Institute of Neuroscience, National Center of Neurology and Psychiatry, Kodaira, Tokyo, Japan; Department of Neurology, Nara Medical University School of Medicine, Kashihara, Nara, Japan.
2 Medical Genome Center, National Center of Neurology and Psychiatry, Kodaira, Tokyo, Japan.
3 Department of Neuromuscular Research, National Institute of Neuroscience, National Center of Neurology and Psychiatry, Kodaira, Tokyo, Japan; Department of Pediatrics, Showa General Hospital, Kodaira, Tokyo, Japan.
4 Department of Neuromuscular Research, National Institute of Neuroscience, National Center of Neurology and Psychiatry, Kodaira, Tokyo, Japan.
5 Department of Neuromuscular Research, National Institute of Neuroscience, National Center of Neurology and Psychiatry, Kodaira, Tokyo, Japan. Electronic address: [email protected].