Exposure to D.D.TBr Med J 1948; 1 doi: https://doi.org/10.1136/bmj.1.4562.1132 (Published 12 June 1948) Cite this as: Br Med J 1948;1:1132
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