%0 Journal Article %A R Harling %T Further information in support of a selective smallpox vaccination policy %D 2003 %J Weekly releases (1997–2007) %V 7 %N 1 %P 1994 %R doi:https://doi.org/10.2807/esw.07.01.01994-en %U https://www.eurosurveillance.org/content/10.2807/esw.07.01.01994-en