Br Med J 1939; 2 doi: (Published 04 November 1939) Cite this as: Br Med J 1939;2:929

Article usage

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Usage statistics: September 2009 to March 2018

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Sep 2009001
Oct 2010002
Nov 2010002
Jan 2011002
Jan 2012003
Feb 2012001
Jul 2014002
Nov 2015001
Mar 2018001