Intended for healthcare professionals


The School of Hygiene and Public Health of the Johns Hopkins University, Baltimore, U.S.A

Br Med J 1926; 2 doi: (Published 27 November 1926) Cite this as: Br Med J 1926;2:997

Article usage

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Usage statistics: April 2009 to January 2020

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Apr 2009001
Sep 2010002
Oct 2010002
Nov 2010003
Oct 2011001
Jan 2012001
Feb 2012001
Jul 2014002
Dec 2015002
May 2016001
May 2018001
Dec 2018001
Jan 2020001