Kentaro Ohta¹, Ryutaro Hanyu¹, Rei Kato¹, Haruka Urabe¹, Fumihiro Yanagimura¹, Tetsuhiko Ikeda¹, Yousuke Yonemochi¹, Takeshi Kanayama³, Masanobu Tobinaga², Izumi Aida¹, Takashi Nakajima¹ (1.NHO Niigata National Hospital, Japan, 2.Iiyama Red Cross Hospital, Japan, 3.Department of Neurology, Brain Research Institute, Niigata University, Japan)

Mamoru Shibata¹, Atsuko Nihira², Yuka Tanji³, Akichika Ozeki³, Mika Komori³ (1.Tokyo Dental College Ichikawa General Hospital, Ichikawa,, Japan, 2.Nakamura Memorial Hospital, Sapporo,, Japan, 3.Eli Lilly Japan K.K., Kobe,, Japan)

Akiko Uchino¹, Miho Iigaya², Kazutoshi Nishiyama³ (1.Department of Preventive Medical Center, Kitasato Institute Hospital, Japan, 2.Department of Neurology, Kitasato Institute Hospital, Japan, 3.Department of Neurology, Kitasato University School of Medicine, Japan)

Hisanao Akiyama, Shintaro Akamatsu, Soichiro Shibata, Chihiro Kuwata, Yoshihisa Yamano (Division of Neurology, Department of Internal Medicine, St. Marianna University School of Medicine, Japan)

Shigekazu Kitamura¹, Takao Takeshima², Ryuji Yoshida³, Reija Koukakis⁴, Daishi Yui³, Miki Hasebe³ (1.Department of Neurology, Konan Kakogawa Hospital, Japan, 2.Headache Center, Department of Neurology, Tominaga Hospital, Japan, 3.Amgen K.K., Japan, 4.Amgen Inc., UK)