title: Multiple factors in airways obstruction.
mesh_terms: D000017:ABO Blood-Group System; D000328:Adult; D000428:Alcohol Drinking; D005260:Female; D005541:Forced Expiratory Volume; D006801:Humans; D008173:Lung Diseases, Obstructive / Q000175:diagnosis* / Q000235:genetics; D008297:Male; D008875:Middle Aged; D012306:Risk; D012907:Smoking; D012959:Socioeconomic Factors
chemical_list: D000017:ABO Blood-Group System