RT Journal Article SR Electronic(1) A1 Eurosurveillance editorial team YR 2015 T1 WHO recommendations on the composition of the 2015/16 influenza virus vaccines in the northern hemisphere JF Eurosurveillance VO 20 IS 9 SP 21048 OP DO https://doi.org/10.2807/ese.20.09.21048-en UL https://www.eurosurveillance.org/content/10.2807/ese.20.09.21048-en