Intended for healthcare professionals



British Medical Journal 1989; 299 doi: (Published 30 September 1989) Cite this as: British Medical Journal 1989;299:864

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 2010 to November 2017

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Dec 2010002
Jun 2011001
Sep 2011001
Dec 2011001
Feb 2012001
Jan 2013002
Jun 2013002
Sep 2013001
Jul 2014002
Oct 2015001
Nov 2017001