Articles

Reviews

Br Med J 1932; 1 doi: https://doi.org/10.1136/bmj.1.3721.806 (Published 30 April 1932) Cite this as: Br Med J 1932;1:806

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

PDF extract preview

Sign in

Log in through your institution

Subscribe