Correction
A Correction
Br Med J 1934; 1 doi: https://doi.org/10.1136/bmj.1.3829.972-a (Published 26 May 1934) Cite this as: Br Med J 1934;1:972
This article has a correction. Please see:
This is a PDF-only article. The first page of the PDF of this article appears above.