1. Department of Neurology, National Center Hospital, National Center of Neurology and Psychiatry, Tokyo, Japan
2. Department of Neurology, Saku Central Hospital, Nagano Prefectural Federation of Agricultural Cooperatives for Health and Welfare, Nagano, Japan
3. Department of Neurology, Kuwana City Medical Center, Mie, Japan
4. Department of Radiology, National Center Hospital, National Center of Neurology and Psychiatry, Tokyo, Japan
5. Department of Genome Medicine Development, Medical Genome Center, National Center of Neurology and Psychiatry, Tokyo, Japan
6. Department of Neuromuscular Research, National Institute of Neuroscience, National Center of Neurology and Psychiatry, Tokyo, Japan