1. Department of Neurology, Akita National Hospital, Japan
2. Department of Neurology, Kumamoto Saishunso National Hospital, Japan
3. Department of Internal Medicine, Tokushima National Hospital, Japan
4. Department of Biorepository Research and Networking, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Japan
5. Department of Biostatics, Kyoto University, Japan
6. Department of Neurology, Toneyama National Hospital, Japan
7. Translational Medical Center, National Center of Neurology and Psychiatry, Japan