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Br Med J 1972; 4 doi: https://doi.org/10.1136/bmj.4.5836.358 (Published 11 November 1972) Cite this as: Br Med J 1972;4:358

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: June 2011 to May 2018

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AbstractFullPdf
Jun 2011007
Oct 2011001
Jan 2012001
May 2012004
Jun 2014001
Jul 2014003
Dec 2015002
May 2018001
Total0020