title: Anticholinergic and beta-sympathomimetic inhalation challenges in asthma and bronchitis.
mesh_terms: D000336:Aerosols; D001249:Asthma / Q000188:drug therapy*; D001286:Atropine Derivatives / Q000627:therapeutic use; D001991:Bronchitis / Q000188:drug therapy*; D001993:Bronchodilator Agents / Q000627:therapeutic use*; D006801:Humans; D009921:Metaproterenol / Q000627:therapeutic use; D008875:Middle Aged; D010276:Parasympatholytics / Q000627:therapeutic use*; D013566:Sympathomimetics / Q000627:therapeutic use*
chemical_list: D000336:Aerosols; D001286:Atropine Derivatives; D001993:Bronchodilator Agents; D010276:Parasympatholytics; D013566:Sympathomimetics; D009921:Metaproterenol