Yasuhiro Ishibashi¹, Masako Kudo², Tetsuya Maeda², Haruki Shimoda³, Kiyomi Sakata³, Akira Ogawa⁴ (1.Neurology, Kitakami Saiseikai hospital, Japan, 2.2)Department of Neurology and Gerontology, Iwate Medical University, Japan, 3.Department of Hygiene and Preventive Medicine, Iwate Medical University, Japan, 4.Iwate Medical University, Japan)

Masako Kudo¹, Yasuhiro Ishibashi², Tetsuya Maeda¹, Haruki Shimoda³, Kiyomi Sakata³, Akira Ogawa⁴ (1.Department of Neurology and Gerontology, Iwate Medical University Neurology, Japan, 2.Kitakami Saiseikai hospital, Japan, 3.Department of Hygiene and Preventive Medicine, Iwate Medical University, Japan, 4.Iwate Medical University, Japan)

Kanako Sekiya, Mami Takahashi, Azusa Aoyama, Mariko Hokari, Hiroaki Nozaki, Masayoshi Tada, Aki Sato, Shuichi Igarashi (Niigata City General Hospital, Neurology, Japan)

Yohsuke Yagi, Takanori Yokota (Tokyo Medical and Dental University, Japan)

Yasuhiko Matsumori¹, Miki Ishida², Katsuhiro Iba², Masami Nakai³, Nobuyuki Koga³ (1.Sendai Headache and Neurology clinic, Japan, 2.Headquarters of Clinical Development, Otsuka Pharmaceutical Co., Ltd., Japan, 3.Medical Affairs, Otsuka Pharmaceutical Co., Ltd., Japan)