title: The relation between permanent administration of Atrovent and the dose of steroids in chronic bronchitis [proceedings].
mesh_terms: D001286:Atropine Derivatives / Q000008:administration & dosage*; D001991:Bronchitis / Q000188:drug therapy*; D002908:Chronic Disease; D004359:Drug Therapy, Combination; D006801:Humans; D009241:Ipratropium / Q000008:administration & dosage* / Q000627:therapeutic use; D010919:Placebos; D011241:Prednisone / Q000008:administration & dosage* / Q000627:therapeutic use; D014221:Triamcinolone / Q000008:administration & dosage* / Q000627:therapeutic use
chemical_list: D001286:Atropine Derivatives; D010919:Placebos; D014221:Triamcinolone; D009241:Ipratropium; D011241:Prednisone