Research Article Occupational medicine? Br Med J 1973; 1 doi: https://doi.org/10.1136/bmj.1.5848.250-a (Published 03 February 1973) Cite this as: Br Med J 1973;1:250 Article Related content Metrics Responses Peer review This article has a correction. Please see:Occupational Medicine? - February 17, 1973 This is a PDF-only article. The first page of the PDF of this article appears below.