1. Department of Neurology; Tohoku Medical and Pharmaceutical University; Sendai Japan
2. Division of Clinical Infectious Diseases & Chemotherapy; Tohoku Medical and Pharmaceutical University; Sendai Japan
3. Department of Pathological Diagnostics; Yamagata University School of Medicine; Yamagata Japan
4. Department of Pathology; Tohoku Medical and Pharmaceutical University; Sendai Japan
5. Department of Neurology; Tohoku University Graduate School of Medicine; Sendai Japan