[Table of contents below, full content at link]
Protocol for cohort database studies to measure influenza vaccine effectiveness in the European Union and European Economic Area Member States
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ECDC - Technical Document - Protocol for cohort database studies to measure influenza vaccine effectiveness in the European Union and European Economic Area Member States - 17 July 2009
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ECDC - Technical Document - Protocol for case-control studies to measure influenza vaccine effectiveness in the European Union and European Economic Area Member States - 17 July 2009
[Table of contents below; full document at link]
Protocol for case-control studies to measure influenza vaccine effectiveness in the European Union and European Economic Area Member States
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