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Br Med J (Clin Res Ed) 1987; 294 doi: https://doi.org/10.1136/bmj.294.6574.777 (Published 21 March 1987) Cite this as: Br Med J (Clin Res Ed) 1987;294:777

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: December 2019 to January 2023

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AbstractFullPdf
Dec 2019002
May 2020001
Sep 2020001
Oct 2020002
Nov 2020002
Mar 2021001
May 2021001
Jun 2021001
Aug 2021002
Nov 2021001
Apr 2022002
Jan 2023001
Total0017