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Br Med J 1931; 2 doi: (Published 21 November 1931) Cite this as: Br Med J 1931;2:968

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: October 2010 to December 2015

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Oct 201002
Nov 201004
May 201101
Aug 201101
Oct 201101
Feb 201201
Jul 201401
Dec 201502