Figure 1
From: Utility of the first few100 approach during the 2009 influenza A(H1N1) pandemic in the Netherlands

Age distribution of cases and controls of the case–control study during the influenza A(H1N1) 2009 pandemic in the Netherlands, 2009.
From: Utility of the first few100 approach during the 2009 influenza A(H1N1) pandemic in the Netherlands
Age distribution of cases and controls of the case–control study during the influenza A(H1N1) 2009 pandemic in the Netherlands, 2009.