title: Alzheimer's disease: what is it, how many people have it, and why do we need to know?
authors.forename: M S
authors.initials: MS
authors.lastname: Albert
authors.forename: D A
authors.initials: DA
authors.lastname: Drachman
mesh_terms: D000368:Aged; D000544:Alzheimer Disease / Q000145:classification / Q000175:diagnosis / Q000453:epidemiology*; D003430:Cross-Sectional Studies; D003937:Diagnosis, Differential; D005260:Female; D005544:Forecasting; D006287:Health Planning Guidelines; D006801:Humans; D008297:Male; D008875:Middle Aged; D011157:Population Dynamics; D014481:United States