Epidemiological aspects of dementia and considerations in planning services.
D000368:Aged; D000544:Alzheimer Disease / Q000453:epidemiology* / Q000209:etiology; D003430:Cross-Sectional Studies; D003695:Delivery of Health Care / Q000639:trends; D003704:Dementia / Q000453:epidemiology* / Q000209:etiology; D005060:Europe; D006285:Health Planning / Q000639:trends; D006301:Health Services Needs and Demand / Q000639:trends*; D006302:Health Services Research / Q000639:trends*; D006299:Health Services for the Aged / Q000706:statistics & numerical data*; D006801:Humans; D012306:Risk; D014481:United States