title: CHRONIC BRONCHITIS. A MAJOR HEALTH PROBLEM.
mesh_terms: D000397:Air Pollution; D001991:Bronchitis; D029481:Bronchitis, Chronic; D006801:Humans; D012907:Smoking; D013223:Statistics as Topic; D006113:United Kingdom
keywords: AIR POLLUTION; BRONCHITIS; GREAT BRITAIN; SMOKING; STATISTICS