Letter

Rules for drug trials.

BMJ 1989; 299 doi: https://doi.org/10.1136/bmj.299.6712.1401-a (Published 02 December 1989) Cite this as: BMJ 1989;299:1401

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