Errata
Erratum
Br Med J 1922; 1 doi: https://doi.org/10.1136/bmj.1.3185.64 (Published 14 January 1922) Cite this as: Br Med J 1922;1:64
This is a PDF-only article. The first page of the PDF of this article appears above.
Intended for healthcare professionals
This is a PDF-only article. The first page of the PDF of this article appears above.