RT Journal Article SR Electronic(1) A1 Steens, A A1 van der Hoek, W A1 Dijkstra, F A1 van der Sande, M YR 2011 T1 Influenza vaccine effectiveness, 2010/11 JF Eurosurveillance VO 16 IS 15 SP 19843 OP DO https://doi.org/10.2807/ese.16.15.19843-en UL https://www.eurosurveillance.org/content/10.2807/ese.16.15.19843-en