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. 1951 Oct;5(4):254–258. doi: 10.1136/jech.5.4.254
Secular Changes in the Incidence of Malformations of the Central Nervous System
Brian MacMahon
1,*, R G Record
1, Thomas McKeown
1
Brian MacMahon
1Department of Social Medicine, University of Birmingham
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Thomas McKeown
1Department of Social Medicine, University of Birmingham
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1Department of Social Medicine, University of Birmingham
*
In receipt of a personal grant from the Medical Research Council.
PMCID: PMC1037302 PMID: 14886593