1. Medical Center for Dementia in the Northeastern Wards of Tokyo Metropolis Oouchi Hospital, Heisei Medical Welfare Group Tokyo Japan
2. Department of Geriatric Medicine Kyorin University School of Medicine Tokyo Japan
3. Medical Center for Dementia in Kanagawa Prefecture National Hospital Organization, Kurihama Alcoholism Center Kanagawa Japan
4. Medical Center for Dementia in Chiba Prefecture Asahi Neurology and Rehabilitation Hospital Matsudo Japan