Research Article
Surgeons in the fields.
Br Med J (Clin Res Ed) 1984; 289 doi: https://doi.org/10.1136/bmj.289.6436.37 (Published 07 July 1984) Cite this as: Br Med J (Clin Res Ed) 1984;289:37This is a PDF-only article. The first page of the PDF of this article appears above.