Teruaki Masuda, Noriyuki Kimura, Takeshi Mizukami, Hideyuki Ito, Yumi Kaneko, Atsuko Eguchi, Etsuro Matsubara (Department of Neurology, Faculty of Medicine, Oita University, Japan)

Kenichi Sakai, Yuka Matoba, Naohiro Fumoto, Takashi Haraguchi, Yasuyuki Tanabe (Department of Neurology, NHO Minami-Okayama Medical Center, Japan)

Satoshi Masuzugawa (Masuzugawa Neurology Clinic, Japan)

Miho Osako, Yoko Mochizuki (Tokyo Metropolitan Kita Medical and Rehabilitation Center for the Disabled, Japan)

Shinichi Shirai¹, Katsuki Eguchi^1,2, Masayoshi Zaitsu³, Gen Kobashi⁴, Hiroaki Yaguchi¹, Kenji Nakajima⁵, Ichiro Yabe¹ (1.Department of Neurology, Hokkaido University, Japan, 2.Hokkaido Neurology Hospital, Japan, 3.University of Occupational and Environmental Health, Japan, 4.Department of Public Health, Dokkyo Medical University, Japan, 5.NHO Matsue Medical Center, Japan)