Br Med J (Clin Res Ed) 1984; 288 doi: https://doi.org/10.1136/bmj.288.6433.1835 (Published 16 June 1984) Cite this as: Br Med J (Clin Res Ed) 1984;288:1835

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: December 2010 to March 2016

Rendering graph...
Dec 2010002
Mar 2011001
Jul 2011001
Nov 2011001
Feb 2012001
Feb 2013002
May 2013001
Sep 2013006
Oct 2013001
Jul 2014003
Dec 2015002
Mar 2016001