RT Journal Article SR Electronic(1) A1 Crowcroft, N S A1 Levy-Bruhl, D YR 2017 T1 Registries: An essential tool for maximising the health benefits of immunisation in the 21st century JF Eurosurveillance VO 22 IS 17 SP 30523 OP DO https://doi.org/10.2807/1560-7917.ES.2017.22.17.30523 UL https://www.eurosurveillance.org/content/10.2807/1560-7917.ES.2017.22.17.30523