RT Journal Article SR Electronic(1) A1 Joseph, C YR 1999 T1 Influenza vaccine components for the northern hemisphere 1999-2000 JF Weekly releases (1997–2007) VO 3 IS 10 SP 1443 OP DO https://doi.org/10.2807/esw.03.10.01443-en UL https://www.eurosurveillance.org/content/10.2807/esw.03.10.01443-en