ReviewsBr Med J 1918; 1 doi: https://doi.org/10.1136/bmj.1.2981.207 (Published 16 February 1918) Cite this as: Br Med J 1918;1:207
Log in using your username and password
Log in through your institution
Register for a free trial to thebmj.com to receive unlimited access to all content on thebmj.com for 14 days.
Sign up for a free trial