title: [Cases with severe obstructive change in the small airways].
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D001980:Bronchi / Q000473:pathology; D001991:Bronchitis / Q000473:pathology*; D002908:Chronic Disease; D006801:Humans; D008297:Male; D008875:Middle Aged