1. Department of Neurology NHO Miyagi National Hospital Yamamoto Miyagi Japan
2. Department of Neurology Tohoku University Graduate School of Medicine Sendai Miyagi Japan
3. Department of Neurology NHO Yonezawa National Hospital Yonezawa Japan
4. Department of Neurology Tohoku Medical and Pharmaceutical University Sendai Miyagi Japan
5. Multiple sclerosis and Neuromyelitis Optica center Southern TOHOKU Research Institute for Neuroscience (STRINS) Koriyama Fukushima Japan