Intended for healthcare professionals

Letters

Criteria for authorship

BMJ 1995; 310 doi: https://doi.org/10.1136/bmj.310.6983.869 (Published 01 April 1995) Cite this as: BMJ 1995;310:869

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 2018400
Feb 2018920
Mar 2018510
Apr 2018400
May 2018600
Jul 2018100
Aug 2018200
Sep 2018300
Oct 2018100
Nov 2018020
Dec 2018500
Jan 20191510
Feb 20191500
Mar 20195530
Apr 20191800
May 20191620
Jun 20191310
Jul 2019200
Aug 2019200
Oct 2019100
Nov 2019100
Dec 20195630
Jan 2020400
Feb 20201000
Mar 2020100
May 20203510
Jun 2020900
Jul 2020410
Aug 2020110
Sep 20201310
Oct 20204510
Nov 20203300
Dec 20201100
Jan 2021800
Feb 20213610
Mar 2021320
Apr 2021800
May 20211000
Jun 2021300
Jul 2021400
Aug 2021410
Sep 2021200
Oct 2021300
Nov 2021300
Dec 2021700
Jan 2022400
Feb 2022600
Mar 2022300
Apr 2022500
May 2022500
Jun 2022800
Jul 2022510
Aug 2022600
Sep 2022200
Oct 20221120
Nov 2022300
Dec 2022810
Jan 2023120
Feb 2023200
Apr 2023200
May 2023300
Jun 2023400
Jul 2023100
Aug 2023100
Sep 2023500
Oct 2023910
Nov 2023200
Dec 20231540
Jan 20242810
Feb 20241200
Mar 20241230
Apr 2024200
Total656390