The "emphysema profile" in two midwestern cities in North America.
D000328:Adult; D000368:Aged; D000397:Air Pollution; D004781:Environmental Exposure; D005260:Female; D006801:Humans; D008168:Lung / Q000473:pathology; D008297:Male; D008350:Manitoba; D008722:Methods; D008875:Middle Aged; D008923:Missouri; D011656:Pulmonary Emphysema / Q000453:epidemiology* / Q000473:pathology; D012907:Smoking; D014505:Urban Population