title: Alpha 1-antitrypsin Pi types in COPD patients.
authors.forename: E D
authors.initials: ED
authors.lastname: Janus
mesh_terms: D000328:Adult; D000368:Aged; D004646:Emphysema / Q000235:genetics*; D006801:Humans; D008173:Lung Diseases, Obstructive / Q000235:genetics*; D008875:Middle Aged; D010641:Phenotype; D019896:alpha 1-Antitrypsin Deficiency