Research Article
Diseases of the respiratory system. Neoplasms of the lung.
Br Med J 1978; 1 doi: https://doi.org/10.1136/bmj.1.6123.1331 (Published 20 May 1978) Cite this as: Br Med J 1978;1:1331This is a PDF-only article. The first page of the PDF of this article appears above.