Articles

NEWS AND NOTES

Br Med J (Clin Res Ed) 1981; 283 doi: http://dx.doi.org/10.1136/bmj.283.6294.800 (Published 19 September 1981) Cite this as: Br Med J (Clin Res Ed) 1981;283:800

This is a PDF-only article. The first page of the PDF of this article appears below.

PDF extract preview

Sign in

Log in through your institution

Free trial

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

Subscribe