title: Alpha-1-antitrypsin deficiency and chronic obstructive pulmonary disease.
mesh_terms: D000328:Adult; D000368:Aged; D002908:Chronic Disease; D006801:Humans; D008173:Lung Diseases, Obstructive / Q000097:blood*; D008875:Middle Aged; D019896:alpha 1-Antitrypsin Deficiency