Intended for healthcare professionals

Corrections

Retraction

BMJ 1998; 316 doi: https://doi.org/10.1136/bmj.316.7146.1700 (Published 06 June 1998) Cite this as: BMJ 1998;316:1700

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: January 2018 to April 2024

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AbstractFullPdf
Jan 20180130
Feb 2018090
Mar 2018130
Apr 2018070
May 2018090
Jun 2018040
Jul 2018020
Aug 2018090
Sep 2018020
Oct 2018020
Nov 2018040
Dec 2018020
Jan 2019080
Feb 2019060
Mar 20190250
Apr 2019030
May 20190120
Jun 2019040
Jul 2019030
Aug 2019170
Nov 2019230
Dec 2019010
Jan 2020050
Feb 2020230
Mar 2020010
May 20203360
Jun 2020040
Jul 2020020
Aug 2020010
Sep 20205490
Oct 20200260
Nov 20201420
Dec 2020060
Jan 2021050
Feb 2021050
Mar 2021040
Apr 20210100
May 2021070
Jun 2021010
Jul 2021020
Aug 2021020
Sep 2021020
Oct 2021130
Dec 2021080
Jan 2022040
Feb 2022060
Mar 2022030
Apr 2022020
May 2022050
Jun 2022020
Jul 2022150
Aug 2022040
Sep 2022040
Oct 2022450
Nov 2022190
Dec 2022160
Feb 2023050
Mar 2023020
Apr 20230120
May 2023040
Jun 2023020
Jul 2023010
Sep 2023050
Oct 2023080
Nov 2023050
Dec 2023020
Jan 20240200
Feb 20241140
Mar 2024030
Apr 2024020
Total245020