Affiliation: | 1. Neurology, Saitama International Headache Center, Saitama, Japan;2. Headache Center, Department of Neurology, Tominaga Hospital, Osaka, Japan;3. Department of Neurology, Tatsuoka Neurology Clinic, Kyoto, Japan;4. Department of Neurology, Dokkyo Medical University, Tochigi, Japan;5. Global Development, Amgen Inc., Thousand Oaks, CA, USA;6. Research & Development, Amgen K.K., Tokyo, Japan;7. Global Biostatistical Science, Amgen Inc., Thousand Oaks, CA, USA;8. Global Safety, Amgen Inc., Thousand Oaks, CA, USA |