Br Med J 1957; 1 doi: (Published 27 April 1957) Cite this as: Br Med J 1957;1:997

Article usage

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Usage statistics: July 2009 to December 2017

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Jul 2009001
Mar 2010003
May 2010001
Nov 2010002
Jul 2011006
Sep 2011001
Feb 2012001
Dec 2015002
Dec 2017001