Research Article

Chronic bronchitis: is bacteriological examination of sputum necessary?

Br Med J 1978; 2 doi: https://doi.org/10.1136/bmj.2.6136.537 (Published 19 August 1978) Cite this as: Br Med J 1978;2:537

This is a PDF-only article. The first page of the PDF of this article appears below.

PDF extract preview