RT Journal Article SR Electronic(1) A1 Kelly, H A1 Riddell, M A1 Heywood, A A1 Lambert, S YR 2009 T1 WHO criteria for measles elimination: a critique with reference to criteria for polio elimination JF Eurosurveillance VO 14 IS 50 SP 19445 OP DO https://doi.org/10.2807/ese.14.50.19445-en UL https://www.eurosurveillance.org/content/10.2807/ese.14.50.19445-en