England and WalesBr Med J 1935; 1 doi: http://dx.doi.org/10.1136/bmj.1.3863.122 (Published 19 January 1935) Cite this as: Br Med J 1935;1:122
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