Medical Practice

Materia Non Medica

Br Med J 1976; 2 doi: https://doi.org/10.1136/bmj.2.6041.937 (Published 16 October 1976) Cite this as: Br Med J 1976;2:937

This article has a correction. Please see:

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

Subscribe