title: Results of questionnaires and spirometry among non-smokers in Oslo.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D001249:Asthma / Q000453:epidemiology; D004812:Epidemiologic Methods; D005260:Female; D006801:Humans; D008173:Lung Diseases, Obstructive / Q000175:diagnosis / Q000453:epidemiology*; D008297:Male; D008875:Middle Aged; D009664:Norway; D012737:Sex Factors; D012907:Smoking; D013147:Spirometry; D011795:Surveys and Questionnaires