Tokyo Medical University - Department of Neurology, Tokyo Medical University - Department of Neurology, University of Tokyo - Department of Biostatics, University of Tokyo Hospital - Central Coordinating Unit, Tokyo Medical University - Department of Neurology, Tokyo Medical University - Department of Neurology, Tokyo Medical University - Department of Neurology, Shiga University of Medical Science - Department of Neurology, University of Tsukuba - Department of Neurology, University of Tsukuba - Department of Neurology, University of Tsukuba - Department of Neurology, Yamaguchi University Graduate School of Medicine - Department of Neurology and Clinical Neuroscience, Nagoya University - Department of Neurology, Nagoya University - Department of Neurology, Department of Neurology, National Hospital Organization Kumamoto Saishun Medical Center - Department of Neurology, Kitasato University School of Medicine - Department of Neurology, Kitasato University School of Medicine - Department of Neurology, University of Tokyo - Department of Neurology, University of Tokyo - Department of Neurology, Tokyo Metropolitan Neurological Hospital - Department of Neurology, University of Okayama - Department of Neurology, Hokkaido University - Department of Neurology, Hokkaido University - Department of Neurology, Hokkaido University - Department of Neurology, Tohoku University Hospital - Department of Neurology, Tohoku University Hospital - Department of Neurology, Nagoya University - Department of Neurology, National Center of Neurology and Psychiatry, University of Tokyo - Department of Biostatistics, University of Tokyo Hospital - Central Coordinating Unit and Tokyo Medical University - Department of Neurology