RT Journal Article SR Electronic(1) A1 Eurosurveillance editorial team YR 2020 T1 Expression of concern for Euro Surveill. 2020;25(33) JF Eurosurveillance VO 25 IS 34 SP 200827ec OP DO https://doi.org/10.2807/1560-7917.ES.2020.25.34.200827ec UL https://www.eurosurveillance.org/content/10.2807/1560-7917.ES.2020.25.34.200827ec