1. From Departments of Cardiovascular Medicine (T.S., S.K., T. Noguchi, Y.A., T.K., T. Nagai, K. Nakao, M.F., K.K., T.A., Y.G., H.O., S.Y.), Stroke and Cerebrovascular Disease (T.T., K. Nagatsuka), Pathology (H.I.-U.), and Preventive Medicine and Epidemiologic Informatics, Center for Cerebral and Cardiovascular Disease Information (K. Nishimura, Y.M.), National Cerebral and Cardiovascular Center, Suita, Japan.