title: An overall view.
mesh_terms: D001980:Bronchi / Q000502:physiology*; D001993:Bronchodilator Agents / Q000627:therapeutic use*; D002908:Chronic Disease; D006801:Humans; D008173:Lung Diseases, Obstructive / Q000188:drug therapy*; D008722:Methods; D012107:Research Design; D012129:Respiratory Function Tests; D013147:Spirometry
chemical_list: D001993:Bronchodilator Agents