1. Department of Emergency Medicine; Tokyo Metropolitan Tama Medical Center; Tokyo Japan
2. Department of Neuropsychiatry; Tokyo Metropolitan Tama Medical Center; Tokyo Japan
3. Department of Neuropsychiatry, Graduate School of Medicine; The University of Tokyo; Tokyo Japan
4. Department of Internal Medicine; Tokyo Metropolitan Tama Medical Center; Tokyo Japan
5. Department of Internal Medicine; Tokyo Metropolitan Matsuzawa Hospital; Tokyo Japan
6. Department of Neurology; Nitobe-Memorial Nakano General Hospital; Tokyo Japan