General Knowledge of CancerBr Med J 1972; 4 doi: https://doi.org/10.1136/bmj.4.5843.791-b (Published 30 December 1972) Cite this as: Br Med J 1972;4:791
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