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Non-specific effects of vaccines: RCTs, not observational studies, are needed

Authors

  1. Correspondence to Andrew J Pollard, Paediatrics Department, University of Oxford, University Department of Paediatrics, Level 2, Children's Hospital, Oxford OX3 9DU, UK; andrew.pollard{at}paediatrics.ox.ac.uk
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Pollard AJ
Non-specific effects of vaccines: RCTs, not observational studies, are needed

Publication history

  • First published June 29, 2012.
Online issue publication 
March 22, 2016

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