Research Article Narcotic analgesics. II. Adverse effects. Br Med J 1970; 2 doi: https://doi.org/10.1136/bmj.2.5709.599 (Published 06 June 1970) Cite this as: Br Med J 1970;2:599 Article Related content Metrics Responses Peer review This is a PDF-only article. The first page of the PDF of this article appears below.