Reid index and emphysema.
D001980:Bronchi / Q000473:pathology*; D001991:Bronchitis / Q000150:complications; D002908:Chronic Disease; D006801:Humans; D009092:Mucous Membrane / Q000473:pathology; D011656:Pulmonary Emphysema / Q000150:complications / Q000175:diagnosis* / Q000473:pathology