England and WalesBr Med J 1932; 2 doi: https://doi.org/10.1136/bmj.2.3746.770 (Published 22 October 1932) Cite this as: Br Med J 1932;2:770
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