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. 1959 Aug 29;2(5147):257-66.
doi: 10.1136/bmj.2.5147.257.

The significance of respiratory symptoms and the diagnosis of chronic bronchitis in a working population

C M FLETCHER, P C ELMES, A S FAIRBAIRN, C H WOOD

The significance of respiratory symptoms and the diagnosis of chronic bronchitis in a working population

C M FLETCHER et al. Br Med J. .
No abstract available

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