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BMJ 1999; 318 doi: https://doi.org/10.1136/bmj.318.7195.1428a (Published 22 May 1999) Cite this as: BMJ 1999;318:1428

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 January 2022

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AbstractFullPdf
Jul 20030140
Aug 20030140
Sep 20030130
Oct 2003050
Nov 20030100
Dec 2003070
Jan 2004060
Feb 2004030
Mar 2004041
Apr 2004080
May 20040140
Jun 2004090
Jul 2004080
Aug 20040130
Sep 2004070
Oct 2004090
Nov 20040120
Dec 20040230
Jan 20050120
Feb 2005080
Mar 20050140
Apr 2005060
May 2005040
Jun 2005010
Jul 2005020
Aug 2005030
Sep 2005050
Oct 2005060
Nov 2005060
Dec 2005030
Jan 2006020
Feb 2006030
Mar 2006050
Apr 2006010
May 2006030
Jun 2006010
Jul 2006010
Sep 2006010
Oct 2006030
Dec 2006010
Jan 2007020
Feb 2007030
Mar 2007020
May 2007030
Jun 2007060
Aug 2007020
Oct 2007010
Nov 2007010
Dec 2007010
Jan 2008010
Feb 2008010
Apr 2008010
May 2008010
Jun 2008020
Jul 2008030
Aug 2008010
Sep 2008010
Oct 2008020
Nov 2008030
Dec 2008040
Feb 2009010
Aug 2009030
Dec 2009010
Jul 2010050
Sep 2010200
Oct 2010200
Nov 2010200
Dec 2010100
May 2011100
Jul 2011100
Aug 2011300
Oct 2011200
Jan 2012100
Feb 2012100
Apr 2012100
May 2012120
Jun 2012100
Oct 2012300
Dec 2012300
Jan 2013510
Feb 2013010
Apr 2013200
Jun 2013310
Jul 2013300
Aug 2013100
Oct 2013010
Nov 2013010
Dec 2013010
Apr 2014100
May 2014100
Jun 2014300
Jul 2014020
Aug 2014100
Nov 2014070
Apr 2015200
Jul 2015100
Sep 2015120
Dec 2015520
Jun 2016200
Aug 2016300
Sep 2016100
Oct 2016100
Nov 2016300
Dec 2016300
Feb 2017300
Mar 2017200
Apr 2017410
May 20171400
Jun 2017200
Jul 2017500
Aug 2017500
Sep 2017100
Oct 2017410
Nov 2017100
Dec 2017400
Jan 2018300
Feb 2018410
Mar 2018310
Apr 2018110
May 2018800
Jul 2018100
Aug 20181000
Sep 2018100
Oct 2018100
Nov 2018020
Dec 2018300
Jan 20191200
Feb 2019800
Mar 20191910
Apr 2019400
May 20191200
Jun 2019400
Jul 2019500
Aug 2019100
Nov 2019200
Dec 2019300
Jan 2020400
Feb 2020300
Mar 2020100
Apr 2020200
May 20203200
Jun 2020300
Jul 2020400
Sep 2020500
Oct 20201000
Nov 20201000
Dec 2020400
Jan 2021300
Feb 2021300
Mar 2021200
Apr 2021700
May 2021400
Jun 2021100
Jul 2021300
Aug 2021300
Sep 2021300
Oct 2021400
Dec 2021600
Jan 2022200
Total3363501