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In brief

BMJ 1997; 314 doi: https://doi.org/10.1136/bmj.314.7090.1297a (Published 03 May 1997) Cite this as: BMJ 1997;314:1297

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 2003 to December 2017

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AbstractFullPdf
Jul 2003060
Aug 2003070
Sep 2003030
Oct 2003020
Nov 2003060
Dec 2003060
Jan 2004060
Feb 2004030
Mar 2004050
Apr 2004030
May 2004060
Jun 2004070
Jul 2004060
Aug 2004060
Sep 2004080
Oct 2004080
Nov 2004260
Dec 200415240
Jan 20055100
Feb 2005040
Mar 2005070
Apr 2005010
Aug 2005010
Sep 2005010
Nov 2005020
Dec 2005020
Feb 2006030
Mar 2006010
Apr 2006050
Aug 2006020
Oct 2006110
Nov 2006010
Jan 2007010
Feb 2007010
Apr 2007020
May 2007010
Jun 2007010
Oct 2007010
Jul 2008010
Aug 2008010
Sep 2008010
Oct 2008040
Nov 2008030
Jul 2009200
Aug 2009100
Oct 2009100
Nov 2009100
Feb 2010100
Jun 2010020
Jul 2010110
Aug 2010100
Sep 2010320
Oct 2010300
Nov 2010300
Dec 2010100
Mar 2011100
Apr 2011100
May 2011200
Jun 2011600
Jul 2011200
Aug 20111920
Sep 2011120
Oct 20111010
Nov 2011210
Jan 2012100
Feb 2012110
Mar 2012100
May 2012020
Jul 2012100
Sep 2012300
Feb 2013100
Mar 2013320
Apr 2013100
May 2013010
Jun 2013200
Jul 2013200
Aug 2013200
Oct 2013100
Dec 20131300
Apr 2014300
Jun 2014310
Jul 2014050
Aug 2014100
Mar 2015100
Apr 2015100
Jul 2015100
Dec 2015320
Jul 2016100
Aug 2016100
Sep 2016100
Oct 2016200
Dec 2016500
Feb 2017100
Mar 2017400
Apr 2017200
May 2017200
Jun 2017200
Jul 2017200
Aug 2017400
Sep 2017200
Oct 2017400
Dec 2017100
Total1642010