1. National Center of Neurology and Psychiatry, 4-1-1 Ogawa-Higashi, Kodaira 187-8551, Tokyo, Japan
2. Osaka University Graduate School of Medicine, Suita, Japan
3. National Hospital Organization Sagamihara National Hospital, Sagamihara, Japan
4. Seoul National University Hospital, Seoul, Republic of Korea
5. Department of Neurology, China Medical University Hospital Medical College, China Medical University, Taichung, Taiwan
6. Ehime University Hospital, Matsuyama, Japan
7. National Hospital Organization Utano Hospital, Kyoto, Japan
8. AbbVie Inc., Tokyo, Japan
9. AbbVie Inc., North Chicago, Illinois, USA