Rijksinstituut voor Volksgezondheid en Milieu Pandemic influenza A(H1N1)pdm09 improves vaccination routine in subsequent years: a cohort study from 2009 to 2011 | RIVM Jaar: 2013 Pandemic influenza A(H1N1)pdm09 improves vaccination routine in subsequent years: a cohort study from 2009 to 2011 | RIVM Bron: rivm.nl Download dossier (ZIP) · JSON