title: Large-scale population surveys.
mesh_terms: D003365:Costs and Cost Analysis; D004812:Epidemiologic Methods; D006306:Health Surveys; D006801:Humans; D009316:National Institutes of Health (U.S.); D009422:Nervous System Diseases / Q000453:epidemiology*; D012494:Sampling Studies; D013223:Statistics as Topic; D014481:United States