title: Causes and development of chronic airways obstruction and its further investigation.
mesh_terms: D000397:Air Pollution; D000402:Airway Obstruction / Q000209:etiology*; D001991:Bronchitis / Q000209:etiology; D002908:Chronic Disease; D002980:Climate; D004391:Dust; D006801:Humans; D008173:Lung Diseases, Obstructive / Q000209:etiology* / Q000235:genetics; D009790:Occupations; D011656:Pulmonary Emphysema / Q000209:etiology; D012906:Smoke; D012907:Smoking / Q000150:complications; D000515:alpha 1-Antitrypsin / Q000096:biosynthesis
chemical_list: D004391:Dust; D012906:Smoke; D000515:alpha 1-Antitrypsin