1 Department of Neurology, Brain Research Institute, Niigata University, 1-757 Asahimachi-dori, Chuoku, Niigata, 951-8585, Japan.
2 Department of Neurology, Brain Research Institute, Niigata University, 1-757 Asahimachi-dori, Chuoku, Niigata, 951-8585, Japan. masa2@bri.niigata-u.ac.jp.
3 Translational Research Center for Medical Innovation, Foundation for Biomedical Research and Innovation at Kobe, 2-2 Minatojima-Minamimachi, Kobe, 650-0047, Japan.
4 Department of Neurology, Gifu University Graduate School of Medicine, 1-1 Yanagido, Gifu, 501-1194, Japan. shimo@gifu-u.ac.jp.