Correspondence

Points from letters: Incidence of pertussis

Br Med J 1975; 4 doi: https://doi.org/10.1136/bmj.4.5988.106-f (Published 11 October 1975) Cite this as: Br Med J 1975;4:106

Article usage

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Usage statistics: April 2011 to June 2016

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Apr 201101
Jun 201107
Sep 201101
Dec 201102
May 201205
Mar 201401
Jul 201403
Dec 201502
Jun 201601
Total023