Correction
Unheard Voices
Br Med J 1970; 2 doi: https://doi.org/10.1136/bmj.2.5700.62 (Published 04 April 1970) Cite this as: Br Med J 1970;2:62
This article has a correction. Please see:
This is a PDF-only article. The first page of the PDF of this article appears above.