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BMJ 2001; 322 doi: https://doi.org/10.1136/bmj.322.7286.623/a (Published 10 March 2001) Cite this as: BMJ 2001;322:623

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 May 2018

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Jul 2003090
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Total12044211