title: Chronic respiratory disease among nonsmokers in Hagerstown, Maryland. IV. Effects of urban residence on pulmonary function values.
mesh_terms: D000328:Adult; D000367:Age Factors; D000397:Air Pollution; D002908:Chronic Disease; D004781:Environmental Exposure; D006801:Humans; D008297:Male; D008396:Maryland; D008875:Middle Aged; D011157:Population Dynamics; D012119:Respiration; D012129:Respiratory Function Tests; D012140:Respiratory Tract Diseases / Q000453:epidemiology / Q000209:etiology*; D012424:Rural Population; D012907:Smoking; D012923:Social Class; D013147:Spirometry; D013223:Statistics as Topic; D013997:Time Factors; D014505:Urban Population