Letters

Use may be justified if other factors have been considered

BMJ 1996; 312 doi: https://doi.org/10.1136/bmj.312.7047.1668b (Published 29 June 1996) Cite this as: BMJ 1996;312:1668

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 February 2018

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AbstractFullPdf
Jul 2003070
Aug 20030100
Sep 2003030
Oct 2003090
Nov 20030150
Dec 20030110
Jan 20040170
Feb 20040150
Mar 20040200
Apr 20040120
May 2004080
Jun 20040110
Jul 20040100
Aug 2004080
Sep 2004040
Oct 2004070
Nov 2004260
Dec 200416290
Jan 20056130
Feb 20051100
Mar 20050120
Apr 2005160
May 2005230
Jun 2005020
Jul 2005140
Aug 2005030
Sep 2005030
Oct 2005020
Nov 2005060
Dec 2005050
Feb 2006030
Mar 2006150
Apr 2006040
May 2006020
Jun 2006070
Jul 2006040
Aug 2006060
Sep 2006010
Oct 2006010
Nov 2006020
Jan 2007080
Feb 2007030
Mar 2007060
Apr 2007020
May 2007020
Jun 2007040
Jul 2007030
Aug 2007020
Sep 2007050
Oct 2007090
Nov 2007030
Dec 2007140
Jan 2008070
Feb 2008050
Mar 2008150
Apr 2008040
May 2008040
Jun 20080100
Jul 2008030
Aug 2008030
Sep 2008060
Oct 2008180
Nov 20083120
Dec 2008030
Feb 2009100
Mar 2009100
Apr 2009200
Jun 2009010
Aug 2009300
Oct 2009100
Dec 2009100
Feb 2010100
Mar 2010200
May 2010210
Jun 2010100
Jul 2010210
Aug 2010500
Sep 2010530
Oct 2010100
Nov 2010600
Jan 2011100
Feb 2011300
Apr 2011110
May 2011100
Jul 2011100
Aug 2011110
Oct 2011010
Nov 2011010
Jan 2012200
Feb 2012100
May 2012120
Aug 2012100
Sep 2012300
Oct 2012010
Jan 2013110
Feb 2013010
Apr 2013100
May 2013200
Jun 2013300
Jul 2013340
Aug 2013600
Sep 2013210
Oct 2013010
Jan 2014200
Mar 2014020
Apr 2014100
May 2014100
Jun 2014510
Jul 2014010
Sep 2014400
Oct 2014100
Dec 2014120
Jan 2015300
Feb 2015030
Mar 2015240
Apr 2015210
May 2015700
Jun 2015100
Jul 2015100
Aug 2015400
Sep 2015100
Nov 2015210
Dec 2015330
Mar 2016200
Apr 2016100
May 2016300
Jun 2016200
Jul 2016400
Aug 2016300
Sep 2016310
Oct 2016700
Nov 2016100
Dec 2016200
Feb 2017300
Mar 2017300
Apr 2017410
May 2017200
Jun 2017200
Jul 2017900
Aug 2017500
Sep 2017400
Oct 2017500
Nov 2017400
Dec 2017100
Jan 2018300
Feb 2018600
Total2244680