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Br Med J (Clin Res Ed) 1983; 287 doi: (Published 22 October 1983) Cite this as: Br Med J (Clin Res Ed) 1983;287:1230

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: April 2009 to May 2018

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Apr 2009001
Dec 2010002
Nov 2011001
Feb 2012001
Jan 2013001
Feb 2013002
Jul 2013001
Jul 2014003
Nov 2015002
Jun 2017001
Mar 2018001
May 2018001