title: Mass screening for early detection of bronchial obstruction. Its possibilities and benefits?
mesh_terms: D005260:Female; D006801:Humans; D008168:Lung / Q000502:physiology; D008173:Lung Diseases, Obstructive / Q000453:epidemiology*; D008176:Lung Volume Measurements; D008297:Male; D008403:Mass Screening / Q000379:methods*; D012424:Rural Population; D012737:Sex Factors; D012907:Smoking; D014505:Urban Population