Steens, Avan der Hoek, WDijkstra, Fvan der Sande, M2025-03-202025-03-2020112150731810.2807/ese.16.15.19843-enhttps://rivm.openrepository.com/handle/10029/645399Influenza vaccine effectiveness, 2010/11.ArticleEurosurveillance 2011; 16(15):pii=198432025-03-20