Correction
A Correction
Br Med J 1923; 1 doi: https://doi.org/10.1136/bmj.1.3241.266-a (Published 10 February 1923) Cite this as: Br Med J 1923;1:266
This article has a correction. Please see:
This is a PDF-only article. The first page of the PDF of this article appears above.