Intended for healthcare professionals

Articles

Notes

British Medical Journal 1989; 298 doi: https://doi.org/10.1136/bmj.298.6679.1042 (Published 15 April 1989) Cite this as: British Medical Journal 1989;298:1042

Article usage

Article metrics provide readers and authors with an indication of how often a specific article has been accessed month by month. It counts three formats - abstract/extract, full text and pdf. The page is updated each day.

Usage statistics: May 2018 to March 2024

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