Atmospheric Pollution Robert E. Wallen, B.Sc. CHEST Volume 96, Issue 3, Pages 363S-368S (September 1989) DOI: 10.1378/chest.96.3_Supplement.363S Copyright © 1989 The American College of Chest Physicians Terms and Conditions
Figure 1 Standardized mortality ratios for chronic bronchitis in men aged 35-74 during 1968-78 and infant mortality from bronchitis and pneumonia per 1,000 births in 1921-5 in 212 areas of England and Wales. X = county boroughs; Δ = London boroughs; 0 = urban areas; 4- = rural areas. (From Barker and Osmond, by permission.18) CHEST 1989 96, 363S-368SDOI: (10.1378/chest.96.3_Supplement.363S) Copyright © 1989 The American College of Chest Physicians Terms and Conditions
Figure 2 Respiratory infections, air pollution, and other factors in the development of chronic airways disease. CHEST 1989 96, 363S-368SDOI: (10.1378/chest.96.3_Supplement.363S) Copyright © 1989 The American College of Chest Physicians Terms and Conditions