title: Epidemiological methods in studying chronic non-specific lung disease (CNSLD).
mesh_terms: D002908:Chronic Disease; D004812:Epidemiologic Methods; D006306:Health Surveys; D006801:Humans; D008171:Lung Diseases / Q000175:diagnosis / Q000453:epidemiology*; D009426:Netherlands; D012129:Respiratory Function Tests; D011795:Surveys and Questionnaires