title: Ipratropium for chronic bronchitis.
mesh_terms: D001249:Asthma / Q000188:drug therapy*; D001286:Atropine Derivatives / Q000627:therapeutic use*; D002908:Chronic Disease; D006801:Humans; D009241:Ipratropium / Q000627:therapeutic use*
chemical_list: D001286:Atropine Derivatives; D009241:Ipratropium