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BMJ 2009; 339 doi: https://doi.org/10.1136/bmj.b5471 (Published 16 December 2009) Cite this as: BMJ 2009;339:b5471

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 2009 to July 2019

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AbstractFullPdf
Dec 200968618370
Jan 2010752640
Feb 201038880
Mar 201016380
Apr 20107240
May 20106210
Jun 20108280
Jul 201018250
Aug 201012330
Sep 20106225
Oct 20103188
Nov 20107311
Dec 201035560
Jan 201118220
Feb 20118100
Mar 2011260
Apr 2011320
May 20116150
Jun 20117100
Jul 2011830
Aug 201127120
Sep 2011680
Oct 201112140
Nov 20114210
Dec 20110220
Jan 20121330
Feb 20121510
Mar 20121810
Apr 20121200
May 2012220
Jun 2012610
Jul 2012620
Aug 2012170
Sep 2012070
Oct 20120100
Nov 2012060
Dec 2012070
Jan 2013060
Feb 2013020
Mar 2013010
Apr 2013070
May 2013050
Jun 2013080
Jul 20130110
Aug 2013050
Sep 2013140
Oct 2013020
Nov 2013050
Dec 20130140
Jan 2014050
Feb 2014050
Mar 2014040
Apr 2014060
May 2014080
Jun 20140170
Jul 20140120
Aug 2014030
Sep 2014080
Oct 2014030
Dec 20140130
Jan 2015040
Feb 2015020
Mar 20150110
Apr 20150200
May 2015030
Jun 2015081
Jul 2015050
Aug 2015060
Sep 2015020
Nov 2015050
Dec 20150120
Jan 2016041
Feb 2016070
Mar 2016190
Apr 2016060
May 2016020
Jun 2016020
Jul 2016050
Aug 2016030
Sep 20160120
Oct 2016040
Nov 2016030
Dec 2016040
Jan 2017040
Feb 2017080
Mar 20170110
Apr 20170120
May 20170180
Jun 20170110
Jul 20170160
Aug 20170140
Sep 20170140
Oct 20170260
Nov 20170140
Dec 2017080
Jan 2018090
Feb 20180100
Mar 2018160
Apr 20180310
May 20182180
Jun 20184180
Jul 2018170
Aug 20180120
Sep 2018060
Oct 20180140
Nov 2018040
Dec 2018070
Jan 2019080
Feb 2019150
Mar 20192140
Apr 20191100
May 2019150
Jun 20191100
Jul 2019040
Total1107332416