Research Article
Assessing clinical trials--first steps.
Br Med J (Clin Res Ed) 1981; 282 doi: https://doi.org/10.1136/bmj.282.6276.1605 (Published 16 May 1981) Cite this as: Br Med J (Clin Res Ed) 1981;282:1605This is a PDF-only article. The first page of the PDF of this article appears above.