Intended for healthcare professionals



British Medical Journal 1989; 299 doi: (Published 30 September 1989) Cite this as: British Medical Journal 1989;299:866

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: July 2009 to April 2017

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Jul 2009001
Aug 2009001
Dec 2010002
Apr 2011002
Dec 2011001
Feb 2012001
Jan 2013002
Jun 2013003
Sep 2013001
Jul 2014003
Apr 2017001