Screening and the 1990 contract.

BMJ 1990; 300 doi: https://doi.org/10.1136/bmj.300.6731.1074 (Published 21 April 1990) Cite this as: BMJ 1990;300:1074

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

Log in

Log in through your institution


* For online subscription