General Articles And News
EpidemiologyBr Med J 1963; 1 doi: https://doi.org/10.1136/bmj.1.5345.1617 (Published 15 June 1963) Cite this as: Br Med J 1963;1:1617
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