title: Letter: COPD in women in developing countries.
mesh_terms: D000328:Adult; D000346:Afghanistan; D000397:Air Pollution; D003906:Developing Countries; D005260:Female; D006801:Humans; D008173:Lung Diseases, Obstructive / Q000209:etiology*; D009390:Nepal; D012906:Smoke; D012907:Smoking / Q000150:complications; D014691:Ventilation
chemical_list: D012906:Smoke