title: Genetic types of alpha-1-antitrypsin in Chinese patients with chronic obstructive pulmonary diseases.
mesh_terms: D000483:Alleles; D002681:China; D005787:Gene Frequency; D006801:Humans; D008173:Lung Diseases, Obstructive / Q000235:genetics*; D010641:Phenotype; D000515:alpha 1-Antitrypsin / Q000235:genetics*
chemical_list: D000515:alpha 1-Antitrypsin