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Br Med J 1975; 1 doi: (Published 15 February 1975) Cite this as: Br Med J 1975;1:397

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: October 2009 to May 2018

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Oct 2009001
Apr 2011001
Jun 2011008
Dec 2011001
May 2012004
Jul 2014003
Nov 2015002
May 2018001