Rijksinstituut voor Volksgezondheid en Milieu Utility of the first few100 approach during the 2009 influenza A(H1N1) pandemic in the Netherlands | RIVM Jaar: 2012 Utility of the first few100 approach during the 2009 influenza A(H1N1) pandemic in the Netherlands | RIVM Bron: rivm.nl Download dossier (ZIP) · JSON