Activities of the B.M.ABr Med J 1965; 1 doi: https://doi.org/10.1136/bmj.1.5448.1499-a (Published 05 June 1965) Cite this as: Br Med J 1965;1:1499
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