Intended for healthcare professionals

Articles

Reviews

Br Med J 1927; 2 doi: https://doi.org/10.1136/bmj.2.3493.1149 (Published 17 December 1927) Cite this as: Br Med J 1927;2:1149
PDF extract preview

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

Log in

Log in through your institution

Subscribe

* For online subscription