title: Clinical studies in chronic bronchitis: a need for better definition and classification of severity.
authors.affiliation: Department of Thoracic Medicine, Royal Brompton National Heart and Lung Institute, London, UK.
authors.forename: R
authors.initials: R
authors.lastname: Wilson
authors.forename: G
authors.initials: G
authors.lastname: Tillotson
authors.forename: P
authors.initials: P
authors.lastname: Ball
mesh_terms: D000900:Anti-Bacterial Agents / Q000627:therapeutic use; D001991:Bronchitis / Q000145:classification / Q000188:drug therapy / Q000209:etiology; D006801:Humans
chemical_list: D000900:Anti-Bacterial Agents