Medical Science and Social ProgressBr Med J 1935; 2 doi: http://dx.doi.org/10.1136/bmj.2.3906.975-a (Published 16 November 1935) Cite this as: Br Med J 1935;2:975
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