title: Plan and operation of the Second National Health and Nutrition Examination Survey, 1976-1980.
mesh_terms: D003625:Data Collection / Q000379:methods; D006306:Health Surveys; D006801:Humans; D009749:Nutrition Surveys; D011786:Quality Control; D012494:Sampling Studies; D011795:Surveys and Questionnaires; D014481:United States