1. Department of Neurology, National Hospital Organization Okinawa National Hospital
2. Center for Clinical Neuroscience, National Hospital Organization Okinawa National Hospital
3. Department of Neurology, Fujimoto General Hospital/Fujimoto Medical System
4. Department of Neurology and Geriatrics, Kagoshima University, Graduate School of Medical and Dental Sciences
5. North Medical Center, Kyoto Prefectural University of Medicine