The Test-Negative Design: Validity, Accuracy and Precision of Vaccine Efficacy Estimates Compared to the Gold Standard of Randomised Placebo-Controlled Clinical Trials
Eurosurveillance - France
doi 10.2807/1560-7917.es2013.18.37.20585
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Date
September 12, 2013
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European Centre for Disease Control and Prevention (ECDC)